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  1. 3 points
    I enjoy the challenge when someone posts a problem I can get my teeth into.
  2. 3 points
    People still use StackOverflow? That's only half a joke. Their community has always been toxic to newcomers and there's so much emphasis on correctness that anything less than perfect is unacceptable. And there's the hostility towards any form of discussion about what is right that I always mention when this subject comes up. SO is good when you're looking for a precise answer to a specific question, but it's terrible for actually asking the questions, or trying to weigh in as a new person with different answers. But I am glad they dethroned Expert Sex Change in search results. edit: If Your Common Sense/shrapnelcol came across this thread and decided they wanted to join our forum...
  3. 3 points
    A few notes about text bounding boxes which, I hope, will help in precise placement of your text. Suppose I have the text string "The lazy fox" which I want to display using 150pt Vivaldi . My image is 4896 x 3672 and I want the text placed at the bottom right but 250 pixels from the edges of the image. $box = imagettfbbox(150,0,'c:/windows/fonts/vivaldii.ttf','The lazy fox'); gives this array of coordinates of the four corners $box = Array ( [0] => 23 [1] => 55 [2] => 871 [3] => 55 [4] => 871 [5] => -140 [6] => 23 [7] => -140 ) You may wonder why it can't just give a rectangle from (0,0) to (width, height) to make sizing simple, but there is extra information to be extracted from the array Text width = (871 - 23) = 848 Text height = 55 - (-140) = 195 The baseline will be 140px from the top The text is offset 23 px to the right. My text, therefore, will be in a rectangle 848 x 195 positioned 250 px from right and bottom edges. The top left x coord of the rectangle will be (4896 - 250 - 848) = 3798 and top left y coord will be (3672 - 250 - 195) = 3227. However, to land the text precisely into this area we position it on the baseline and at the required x offset, ie (3798 - 23 , 3227 + 140) = (3775, 3367). I use a simple custom function to assist with this process function metrics($font, $fsize, $str) { $box = imagettfbbox($fsize, 0, $font, $str); $ht = abs($box[5] - $box[1]); $wd = abs($box[4] - $box[0]); $base = -$box[5]; $tx = -$box[0]; return [ 'width' => $wd, 'height' => $ht, 'ascent' => $base, 'offsetx' => $tx ]; } $box = metrics ('c:/windows/fonts/vivaldii.ttf', 150, 'The lazy fox'); $box = Array ( [width] => 848 [height] => 195 [ascent] => 140 [offsetx] => -23 )
  4. 3 points
    Don't use $GLOBALS. Forget it exists. There is never a good reason to use it. Pretend you never saw it.
  5. 3 points
    +----------------+ +----------------+ | Make sure to |---+ +------->| (e.g. Courier) | +----------------+ | | +----------------+ | | | | +----------+ | | +->| use a |---+ | | +----------------+ +----------+ | | +------->| and use spaces | | | +----------------+ | +----------------+ | | +--->| monospace font |-----+ | +----------------+ | +----------+ | | not tabs |<----------+ +----------+ | +--------------------------------------------------------------------------+ | V +---------------+ | It also helps | +---------------+ | | | +-------------------+ +-------------------+ +------------------------>| if you sometimes |---------------------->| switch between | +-------------------+ +-------------------+ | | +-----------------+-----------------+ | | | | +-------------------+ +-------------------+ | overtype | | insert | +-------------------+ +-------------------+ | | | | | +----------+ | +----------=>| modes |<----------+ +----------+
  6. 3 points
    The code in each switch is identical so all it achieves is to ensure the calculation uses only the defined list of diameter options. Just use an array of the valid values to verify the values. You can use the same array to generate the option list <?php $diam_vals = [2,3,4,6,8,10,12,14,16,18,20,22,24,26]; $results = ''; if ($_SERVER['REQUEST_METHOD']=='POST') { $x = $_POST['x'] ?? 0; $y = $_POST['y'] ?? 0; $diametre = $_POST['diametre'] ?? 0; if ($x > 0 && $y > 0 && in_array($diametre, $diam_vals)) { $rayon = $diametre * 38.1; $dc = $x/2; $ad = ($y/2)-$rayon; $ac = sqrt(pow($ad,2) + pow($dc,2)); $ec = sqrt(pow($ac,2) - pow($rayon,2)); $LongueurBayonette = $ec*2; $alpha = asin($dc/$ac); $alpha = $alpha*180/M_PI; $beta = acos($rayon/$ac); $beta = $beta*180/M_PI; $angle = 180-$alpha-$beta; $results .= "X = " . $x . "mm" . "<br/>"; $results .= "Y = " . $y . "mm" . "<br/>"; $results .= "Longueur = " . number_format($LongueurBayonette,1) . " mm" . "<br/>"; $results .= "&beta; = " . number_format($angle,1) . "°" . "<br/>"; $results .= "Rayon = " . $rayon . " mm" . "<br/>"; $results .= "&phi; = " . $diametre . '"' . "<br/>"; } else { $results = 'Inputs are not valid'; } } ?> <!DOCTYPE html> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <title>Simplified Example</title> </head> <body> <form method="post" action=""> <fieldset> X: <input type="text" name="x" value="" /> <br/> Y: <input type="text" name="y" value="" /> <br/> Diametre: <select name="diametre"> <option value="0"> </option> <?php foreach ($diam_vals as $d) { echo "<option value='$d'>$d</option>\n" ; } ?> </select> <input type="submit" value = "Calculer" /> </fieldset> </form> <br> <?=$results?> Just curious - do you have a diagram of how those values relate to one another. It metions "rayon" and "bayonnette" so my guess is that it is some kind of laser rifle with attached bayonet (but I could be wrong) 😊
  7. 3 points
    I have to agree - do a single query to get the events for the month. I would set up a calendar array of the days in the month (structure: $calendar[wk][wkday][events] ) Loop through the query results and drop the events into their respective week/day slots Loop throught the array to output the calendar DATA TABLE: event +----+----------+---------------------+ | id | name | date_time | +----+----------+---------------------+ | 1 | Event 1 | 2018-11-01 15:00:00 | | 2 | Event 2 | 2018-11-02 12:00:00 | | 3 | Event 3 | 2018-11-11 14:00:00 | | 4 | Event 4 | 2018-11-14 11:00:00 | | 5 | Event 5 | 2018-11-15 14:00:00 | | 6 | Event 6 | 2018-11-16 15:00:00 | | 7 | Event 7 | 2018-11-19 15:00:00 | | 8 | Event 8 | 2018-11-20 16:00:00 | | 9 | Event 9 | 2018-11-23 14:00:00 | | 10 | Event 10 | 2018-11-30 10:00:00 | | 11 | Event 3A | 2018-11-11 16:00:00 | +----+----------+---------------------+ CODE <?php include('db_inc.php'); $db = pdoConnect("test"); // connect to "test" database $curmonth = date('F Y'); // // set up the date range required // $dt1 = new DateTime("first day of this month"); $dt2 = clone $dt1; $dt2->add(new DateInterval('P1M')); $dint = new DateInterval('P1D'); $dper = new DatePeriod($dt1, $dint, $dt2); // // create an array calendar[wk][wkday][events] to store events then output // $calendar = []; foreach ($dper as $d) { $wk = $d->format("W"); $calendar[$wk] = array_fill_keys(range(0,6), []); } // // get the event data for current month // $stmt = $db->query("SELECT id , DATE_FORMAT(date_time, '%D') as day , WEEK(date_time, 1) as wkno , WEEKDAY(date_time) as wkday , DATE_FORMAT(date_time, '%k:%i') as time , name FROM event WHERE YEAR(date_time) = YEAR(CURDATE()) AND MONTH(date_time) = MONTH(CURDATE()) ORDER BY wkno, wkday, time "); // // loop through results and drop events into the array // foreach ($stmt as $ev) { $calendar[$ev['wkno']][$ev['wkday']][] = [ 'day' => $ev['day'], 'time' => $ev['time'], 'name' => $ev['name'] ]; } // // output the array // $tdata = ''; foreach ($calendar as $wk => $wdata) { $tdata .= '<tr>'; foreach ($wdata as $dno => $events) { $cls = $dno > 4 ? "class='we'":""; $tdata .= "<td $cls>"; foreach ($events as $ev) { $tdata .= "{$ev['day']} {$ev['time']} {$ev['name']}<br>"; } $tdata .= "</td>\n"; } $tdata .= "</tr>\n"; } ?> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <meta name="generator" content="PhpED 18.0 (Build 18044, 64bit)"> <meta name="creation-date" content="11/06/2018"> <title>Sample Calendar</title> <style> table { border-collapse: collapse; font-family: verdana, sans-serif; font-size: 10pt; } th { background-color: #369; color: white; padding: 5px; width: 14%; } th.we { background-color: #358; } td { background-color: #FFE; padding: 5px; } td.we { background-color: #FFC; } </style> </head> <body> <h3>Calendar <?=$curmonth?></h3> <table border='1'> <thead> <tr><th>Mon</th><th>Tue</th><th>Wed</th><th>Thu</th><th>Fri</th><th class='we'>Sat</th><th class='we'>Sun</th></tr> </thead> <tbody> <?=$tdata?> </tbody> </table> </body> </html> OUTPUT
  8. 3 points
    I can't imagine a scenario where the gobbledy-gook of a system you apparently are trying to create would be justified, or possible within your demonstrated engineering capabilities. You are talking about trying to create a system that requires a user to only use one workstation and browser to access your system. I don't know what your system would be doing, but it better be providing literally life saving services, because short of that, nobody is going to put up with the restrictions you have in mind. They are anti-user, and when you make things difficult for users, they stop using your system, or never even stay long enough to pass the entry point. It is damn difficult to get anyone to sign up to use legitimately valuable services, which is why you see so many systems that integrate with facebook, google and twitter, so that you can create your account and trust authentication from those systems to allow access. Furthermore some of your plans reflect an apparent lack of understanding of Internet basics like NAT. In your system, if we were to follow along with your plans, for a large company with perhaps 1000 employees at a particular site, you plan to only allow 1 employee there to use your system. Ditto universities, or even an average household: "Hey there roommate, I just made an account at this site, you should too!" "WTF, the system says I'm banned!" Since you are focused on investigating a client IP, I will say this about IP addresses -- they are reliable at least to the degree that they reflect the tcp socket connection from the client to the server. That information bubbles up to PHP from the IP layer, to the server, and finally to PHP's $_SERVER superglob. The problem is, that a client could have bounced through a variety of gateways, proxy servers or VPN prior to the point that you are finally connected. In many sophisticated hosting environments there are things like load balancers or reverse proxy servers that sit between the client connection and the server which interfere with $_SERVER['REMOTE_ADDR']. Rather than see the client IP, you instead see the IP of the proxy server. If you have that sort of environment, then you can examine $_SERVER['X-Forwarded-For'] or $_SERVER['HTTP_X_FORWARDED_FOR'] variables. These may be arrays with a series of addresses. Again you have the issue that these are provided by the "client" so if it is a proxy server you can depend on at least the most recent address to have been the one that made the TCP socket connection to YOUR proxy server. Other legitimate proxy servers will provide the same data. However, someone who is taking steps to hide their origin is not going to be prevented from obscuring their IP and there is absolutely nothing you can do about it. Almost everyone uses NAT in some form, so the actual person IP address of a workstation on a network is never going to be visible (and would also be useless if it was, since these will be non-routable IP addresses that are shared by hundreds of millions of users). Solutions to the issue of certification and authentication, when people have real and legitimate reasons to solve them, involve cryptography. What you are trying to do can be accomplished using X.509 certificates which have support built into browsers. In a nutshell, at account creation time you would generate an client certificate for that user, installing that into your server, and then providing the signed cert back to them in a specific header (application/x-x509-user-cert ). This will cause the browser to prompt the user to install the cert into their browser. If they accept you know have a reliable way of identifying a specific user. At that point, whenever they connect (must be under SSL) you'll be able to authenticate them back to your system via that particular certificate. Those without a client certificate will be unable to connect. You can think of this as white listing. It is highly effective but is typically used only in environments where the system knows in advance who their allowed users are. Trying to use it in a public facing website with an unknown user base is something you just don't see because the benefits of trying to do this far outweigh the tolerance that people have for a system that has that degree of odious overhead and invasion of their privacy. In conclusion: The types of things you are obsessed with are all edge case items. No quality system begins with the premise that the #1 goal is to try and catch and outsmart an imaginary horde of people attacking your site for reasons unknown. This started as a specific thread about the contents of $_SERVER variables and then escalated into fairly delusional territory, with a dash of your personal Devshed drama thrown in. And let's just be clear about one thing: If you ever bring up your personal issues regarding your Devshed access again, which are irrelevant to this community, then your access to this community will end as well. It's off topic, it's a waste of people's time and efforts here, and it's rude. I just want to be clear that I won't tolerate it again.
  9. 2 points
    Short answer: it's safe. Longer answer: it's as safe as any other PHP file on your server. It's a common practice to put this script, or at least a script that defines variables/constants with database credentials, in a PHP file that is not located inside the web root (eg, outside of your public_html or www or whatever directory that your site is based in) because if it's not an actual page then it really shouldn't be in the root; this practice is easy to achieve when you get larger sites that have a single public_html/index.php that runs an "application" or some similar concept whose files are all outside the root.
  10. 2 points
    1 and 2 would presumably be input from the web page. The rest would be something like: for ($m=1; $m<=$M; $m++) { for ($l=1; $l<=$L; $l++) { for ($j=1; $j<=$N; $j++) { #do calculation here storing it in a 2D array } # select minimum here (perhaps min() function) } } # use array sort # use PHP vector class # compute distance from vectors # echo results in desired format
  11. 2 points
    If it helps, note that that a <button> element can have a value attribute independent of its label <?php $option = $_GET['option'] ?? ''; if ($option) echo "You chose $option<hr>"; ?> <!DOCTYPE html> <html lang="en"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <title>Sample</title> </head> <body> <form> Select an option <button name="option" value="1">Choose me</button> <button name="option" value="2">Choose me</button> <button name="option" value="3">No, Choose me</button> <button name="option" value="4">No, Choose me</button> <button name="option" value="5">No, Choose me</button> </form> </body> </html>
  12. 2 points
    try $temp = []; foreach ($cars as $car) { $qty = intval($car); $key = trim(strstr($car, ','), ','); if (!isset($temp[$key])) $temp[$key] = 0; $temp[$key] += $qty; } foreach ($temp as $k => $t) { $newcars[] = "$t,$k"; }
  13. 2 points
    code that unconditionally (always) outputs the raw database statement errors for the connection, query, prepare, and execute statements, only helps hackers when they intentionally trigger errors, since these errors contain things like the database hostname/ip address, database username, if a password is being used or not, part of the sql syntax, and web server path information. the only time you should output the raw database statement errors is when learning, developing, or debugging code/query(ies) and you are viewing the site as the developer/programmer. at all other times, you should log these errors. the simple way of doing this is to use exceptions for errors and in most cases let php catch and handle the exception, where php will use its error related settings to control what happens with the actual error information (database statement errors will 'automatically' get displayed/logged the same as php errors.) you would then remove any discrete error handling logic, since it doesn't add any value for a legitimate visitor to your site, and it will no longer get executed when there is an error (execution transfers to the nearest exception handler for the type of exception or to php if there is none.) the line that Barand posted enables exceptions for errors for the mysqli extension.
  14. 2 points
    I created an extra table to define which category the values were in mysql> select * from catval; +-----+------+ | val | cat | +-----+------+ | 1 | 4 | | 2 | 4 | | 3 | 4 | | 4 | 4 | | 5 | 3 | | 6 | 3 | | 7 | 2 | | 8 | 2 | | 9 | 1 | | 10 | 1 | +-----+------+ then $sql = "SELECT a.cat as cata , b.cat as catb FROM datatb d JOIN catval a ON d.grpa = a.val JOIN catval b ON d.grpb = b.val "; $result = $db->query($sql); //categories $cat = [ 4 => ['name'=>'1:4', 'recs'=>[]], 3 => ['name'=>'5:6', 'recs'=>[]], 2 => ['name'=>'7:8', 'recs'=>[]], 1 => ['name'=>'9:10','recs'=>[]] ]; $n = 0; while ($row = $result->fetch_assoc()) { $cat[$row['cata']]['recs'][$n][] = $row['cata']; $cat[$row['catb']]['recs'][$n][] = $row['catb']; $n++; } // the output echo "<table border='1' style='width:500px; border-collapse:collapse;'>"; foreach ($cat as $c) { echo "<tr><th>{$c['name']}</th>"; for ($i=0; $i<$n; $i++) { echo '<td style="text-align:center;">' . (isset($c['recs'][$i]) ? join(',', $c['recs'][$i]) : '&ndash;') . "</td>"; } echo "</tr>\n"; } echo "</table>\n";
  15. 2 points
    Use $diff->days. $dt1 = new DateTime('2020-05-01'); $diff = $dt1->diff(new DateTime())->d; //--> 14; $diff = $dt1->diff(new DateTime())->days; //--> 44; ->d gives the days as in "1 month 14 days" ->days gives the total days Using SQL: select datediff(curdate(), '2020-05-01') as days; +------+ | days | +------+ | 44 | +------+
  16. 2 points
    Don't worry about the IBD file. MySQL knows how to manage itself, you don't need to go second guessing it because of what you think you saw in Notepad. The question you think you're asking is whether to use an UPDATE or a DELETE+INSERT, but the question you're actually asking is how you should manage uploaded files that can be replaced. The answer to that is... well, it depends. There are two basic options: 1. Forget the previously uploaded file. You don't care about it. Take the new file and stick it wherever you want, update the database, and delete the old file. Gotta delete. Because if you forget about the old file then there's not much of a point to keeping the file itself around too. 2. Keep track of the previous file. You'd probably want a table that holds all the information for past and future uploads, and that's where you track them. For using those files, instead of storing the file information in whatever place, you reference the file in your upload information table. New image, new information row, and you update whatever place was affected. This lets you keep a history of everything, which probably isn't important for stuff like user avatars but is frighteningly important for stuff like monetary transactions. "Okay, I've decided that I want to do <whichever option>. But what about my literal question? Should I update or delete and insert?" Time to learn about an important concept in computing that disappointingly few programmers ever end up learning: atomicity. That's the noun version of "atomic", which means (in this case) that whatever operation you need to do can't be interrupted or broken in half or appear to anyone else as being anything less than one single action. Atomicity is important for stuff like files and databases because you basically never want to look at a file or data in the middle of some important operation. Imagine your site is popular. Really popular. Facebook or Twitter popular. Constant traffic to your servers. Now imagine a user uploads a new image. When the code is ready, it needs to go off into the database to make whatever changes it needs to make so the user has the new image. Say you go with DELETE and INSERT. Your code runs one query that DELETEs whatever, then another query that INSERTs. Sounds fine. Except remember how your site is always busy? It's quite possible someone was looking at your site at the moment in between those two queries. Since the DELETE has happened but not yet the INSERT, your code isn't going to find whatever data it needed to find and the user is going to get a bad experience. If that user was a CEO for a huge company that wanted to buy you out for lots of money, they might not do that now. A DELETE and INSERT is not atomic because there was that point in between the two queries. It was not "one single action". Instead you go with UPDATE. The database does whatever it does, but the clever people who wrote the software for it already knew about stuff like atomicity. And they made their system guarantee that UPDATEs are atomic. One single action. If you do an UPDATE when that rich CEO looks at your site, the database has guaranteed to you that either (a) the CEO will see the old data because the update hasn't happened yet, or (b) they'll see the new data because the update has happened. There is no moment in between old and new for stuff to be broken.
  17. 2 points
    Unlikely Quotes need removing... $query = "UPDATE `greencard` SET `comments`= '$comments', 'sent' = '$sent' WHERE `hospitalnumber`= '$hospitalnumber' and `PIN`= '$PIN'"; ^ ^ and it's easier just to use ... sent = NOW() WHERE ...
  18. 2 points
    Defining a value in the parameter list makes that parameter optional. If it's not provided when the function is called, the it takes on the value assigned to it. Your specific example doesn't really make use of the feature effectively. Take something like this for example though: function findFiles($directory, $includeHidden = false){ $iter = new DirectoryIterator($directory); $list = []; foreach ($iter as $item){ if ($item->isFile()){ $isHidden = $item->getFilename()[0] === '.'; if ($includeHidden || !$isHidden){ $list[] = $item->getPathname(); } } } return $list; } That function requires at least one parameter when it's called, the directory to search. So you end up with the following options for calling it $files = findFiles('/home/kicken'); /* executes with $directory = '/home/kicken', $includeHidden = false */ $files = findFiles('/home/aoeex', true); /* executes with $directory = '/home/aoeex', $includeHidden = true */
  19. 2 points
    I just didn't see the table - the end of that first line was somewhere in my neighbour's living room.
  20. 2 points
    Why are you even attempting to store that duration. You can get it any time you need it with a query. Rule of DB design - don't store derived data. If you really insist on storing it, why do need two queries? UPDATE attendance_records SET duration = timediff(...) WHERE ... - a single update would do the job
  21. 2 points
    I totally agree with @requinix regarding the two tables. However, if you are willing to compromise over the output, you could do something like this SELECT uid , name , SUM(CASE payment_type WHEN 'cash' THEN payment ELSE 0 END) as cash , SUM(CASE payment_type WHEN 'card' THEN payment ELSE 0 END) as card , cost , cost-SUM(payment) as balance FROM payment GROUP BY uid +------+------+------+------+------+---------+ | uid | name | cash | card | cost | balance | +------+------+------+------+------+---------+ | 1 | kim | 0 | 100 | 100 | 0 | | 2 | lee | 95 | 0 | 95 | 0 | | 3 | kent | 50 | 50 | 100 | 0 | | 4 | iya | 40 | 20 | 80 | 20 | +------+------+------+------+------+---------+ If you really need every transaction listed, the SQL becomes quite complex involving user variables and subqueries. It would be much easier to do in the PHP as you output each row. [EDIT] ... For the sake of completeness SELECT uid , name , cash , card , cost , cost-total as balance FROM ( SELECT name , CASE payment_type WHEN 'cash' THEN payment ELSE 0 END as cash , CASE payment_type WHEN 'card' THEN payment ELSE 0 END as card , cost , @tot := CASE @previd WHEN uid THEN @tot + payment ELSE payment END as total , @previd := uid as uid FROM ( SELECT * FROM payment ORDER BY uid ) sorted JOIN (SELECT @previd:=0, @tot:=0) initialize ) recs; +------+------+------+------+------+---------+ | uid | name | cash | card | cost | balance | +------+------+------+------+------+---------+ | 1 | kim | 0 | 100 | 100 | 0 | | 2 | lee | 95 | 0 | 95 | 0 | | 3 | kent | 50 | 0 | 100 | 50 | | 3 | kent | 0 | 50 | 100 | 0 | | 4 | iya | 40 | 0 | 80 | 40 | | 4 | iya | 0 | 20 | 80 | 20 | +------+------+------+------+------+---------+
  22. 2 points
    Not sure I would call a registration and login system less complex than threads and posts, but I guess it depends... I suggest you take a look at MariaDB's knowledge base section on database theory.
  23. 2 points
    the convention around here is "New question, new thread". That allows for short, direct answer to short, direct questions instead of long, rambling threads where all the "Goodness" gets lost. Some comments on the above: the use of "global" breaks encapsulation, requiring the environment "outside" the function to provide the variable. It is better to pass the data as an argument to the function. What value does admin['gender'] have? Any value passed that resolves to true will cause the ternary operator to return "Mr" and everything else will return "Mrs". The code makes no attempt to ensure that the array indexes used actually exist; this may or may not be an issue. What if the individual is female and not married? They might object to being called "Mrs". What if the individual is not gender-identifying? They would object most strongly to be referred to by either of the terms used here. Marital status and/or gender are both Personal Data and should be stored in the User's "record" (whatever form that takes) so that it can be managed by/on behalf of the User and changed over time. Regards, Phill W.
  24. 2 points
    Alternative model which allows multiple siblings jdev_nroll; jdev_sibling; +----+--------+---------+-------+-----------+------------+ +------------+----------+ | id | sname | ctclass | shift | ctstudent | dob | | sibling_id | elder_id | +----+--------+---------+-------+-----------+------------+ +------------+----------+ | 1 | Curly | 1 | 0 | N | 2007-01-20 | | 2 | 1 | | 2 | Larry | 1 | 0 | Y | 2010-12-21 | | 3 | 1 | | 3 | Mo | 1 | 0 | Y | 2011-02-22 | | 3 | 2 | | 4 | Peter | 1 | 0 | N | 2009-01-03 | | 4 | 5 | | 5 | Paul | 1 | 0 | N | 2006-12-21 | | 9 | 8 | | 6 | Mary | 1 | 0 | Y | 2010-09-20 | | 9 | 10 | | 7 | Jane | 1 | 0 | N | 2008-03-08 | | 10 | 8 | | 8 | John | 1 | 0 | N | 2006-10-04 | +------------+----------+ | 9 | George | 1 | 0 | Y | 2010-10-26 | | 10 | Ringo | 1 | 0 | Y | 2009-11-15 | +----+--------+---------+-------+-----------+------------+ SELECT a.id as sibling_id , a.sname as sibling_name , TIMESTAMPDIFF(YEAR,a.dob,curdate()) as sibling_age , a.ctclass as class , b.id as elder_id , b.sname as elder_name , TIMESTAMPDIFF(YEAR,b.dob,curdate()) as elder_age , b.ctstudent as elder_ctstudent FROM jdev_nroll a JOIN jdev_sibling s ON a.id = s.sibling_id JOIN jdev_nroll b ON s.elder_id = b.id WHERE a.ctstudent = 'Y' ORDER BY a.id +------------+--------------+-------------+-------+----------+------------+-----------+-----------------+ | sibling_id | sibling_name | sibling_age | class | elder_id | elder_name | elder_age | elder_ctstudent | +------------+--------------+-------------+-------+----------+------------+-----------+-----------------+ | 2 | Larry | 9 | 1 | 1 | Curly | 13 | N | | 3 | Mo | 8 | 1 | 1 | Curly | 13 | N | | 3 | Mo | 8 | 1 | 2 | Larry | 9 | Y | | 9 | George | 9 | 1 | 8 | John | 13 | N | | 9 | George | 9 | 1 | 10 | Ringo | 10 | Y | | 10 | Ringo | 10 | 1 | 8 | John | 13 | N | +------------+--------------+-------------+-------+----------+------------+-----------+-----------------+
  25. 2 points
    Christmas has come early! <?php const IMGDIR = 'images/'; const THUMBDIR = 'thumbs/'; const THUMBSIZE = 150; // max thumbnail dimension const NUM = 100; // number of images to be processed on each run $images = glob(IMGDIR.'{*.png,*.jpg}', GLOB_BRACE); $thumbs = glob(THUMBDIR.'{*.png,*.jpg}', GLOB_BRACE); // reduce to basenames only $images = array_map('basename', $images); $thumbs = array_map('basename', $thumbs); // copy the next NUM images to $todo list where thumbnails do not yet exist $todo = array_slice(array_diff($images, $thumbs), 0, NUM); $output = ''; foreach ($todo as $fn) { $sz = getimagesize(IMGDIR.$fn); if ($sz[0] == 0) continue; // not an image $ok = 0; $out = null; switch ($sz['mime']) { // check the mime types case 'image/jpeg': $im = imagecreatefromjpeg(IMGDIR.$fn); $ok = $im; $out = 'imagejpeg'; break; case 'image/png': $im = imagecreatefrompng(IMGDIR.$fn); $ok = $im; $out = 'imagepng'; break; default: $ok = 0; } if (!$ok) continue; // not png or jpg // calculate thumbnail dimensions if ($sz[0] >= $sz[1]) { // landscape $w = THUMBSIZE; $h = THUMBSIZE * $sz[1]/$sz[0]; } else { // portrait $h = THUMBSIZE; $w = THUMBSIZE * $sz[0]/$sz[1]; } // copy and resize the image $tim = imagecreatetruecolor(THUMBSIZE, THUMBSIZE); $bg = imagecolorallocatealpha($tim,0xFF,0xFF,0xFF,127); imagefill($tim, 0, 0, $bg); imagecolortransparent($tim, $bg); // centre the image in the 150 pixel square $dx = (THUMBSIZE - $w) / 2; $dy = (THUMBSIZE - $h) / 2; imagecopyresized($tim, $im, $dx, $dy, 0, 0, $w, $h, $sz[0], $sz[1]); imagesavealpha($tim, true); $out($tim, THUMBDIR.$fn); imagedestroy($im); imagedestroy($tim); $output .= "<img src='".THUMBDIR."$fn' alt='$fn'>\n"; } ?> <!DOCTYPE html> <html> <head> <meta http-equiv="content-language" content="en"> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <title>Create Thumbnails</title> <meta name="author" content="Barry Andrew"> <meta name="creation-date" content="10/09/2019"> <style type="text/css"> body { font-family: verdana, sans-serif; font-size: 11pt; } header { background-color: black; color: white; padding: 15px 10px;} img { margin: 5px; } </style> </head> <body> <header> <h1>New Thumbnail Images</h1> </header> <?=$output?> </body> </html>
  26. 2 points
    Yes but you don't want to run both at the same time. If you really wanted to, you would need to change the Apache port on one of them as they both use port 80
  27. 2 points
    Hi, This is a probably a wrong way of inserting new email into the DB and can result in race conditions. You should be inserting the new email directly into the DB and your column for ermail ids should be unique so that it throws an exception for duplicate entries.
  28. 2 points
    It depends on the collation setting for the column.
  29. 2 points
    Not even close. This code... $product_details = "SELECT * FROM product WHERE product_id=".$_GET['product_id']; $prepare = $connect->prepare($product_details); $prepare->execute(); ...would embed any SQL injection code contained in the GET into the query which would then be executed. (Just as an unprepared query would) In the correct version the injection code would only be treated as data and not part of the SQL code.
  30. 2 points
    Protecting a form field from what? htmlspecialchars() is for use when outputting user-supplied data data to a web page. mysql_real_escape string() is was used to protect input values to queries from SQL injection. This is now obsolete, replaced by mysqli_real_escape_string() or (better still) the use of prepared statements to completely separate the query code from the user-supplied data.
  31. 2 points
    Just use var_dump if you just need to see what the array contains.
  32. 2 points
    If this is a repetitive project that is going to build all of the mentioned arrays every time it is executed, perhaps you should consider not having to re-build your second array by using the SKU as the index value of the first array and avoid creating the 2nd array. Change this: $product_table[] = ['SKU' => $sku, 'Label' => $attribute_name, 'Value' => $term_obj->name ]; to: $product_table[$sku][] = ['Label' => $attribute_name, 'Value' => $term_obj->name ];
  33. 2 points
    here's a list of things i saw in the posted code - 1. don't put php variables inside of double-quotes if they are the only thing in the string. 2, don't use or die() for error handling. use exceptions and in most cases let php catch the exception. note: your use of mysqli_error(...) in the connection code won't work because there's no connection to use. 3. don't unconditionally output database errors onto a web page (this will go away when you get rid of the or die() logic.) 4. don't run queries inside of loops. learn to do JOIN queries. 5. if your code is tabbed that far over because it is located inside your html document, you need to put the php code that's responsible for getting/producing data before the start of your html document, fetch the data into appropriately named php variable(s), then use those variable(s) in the html document. 6. handling the negative/failure case is usually shorter then the positive/successful case. if you invert the logic tests and handle the negative/failure condition first, your code will be clearer. you won't have logic for the negative/failure case 10's/100's of lines later in the code. 7. don't use loops to fetch what will be at most one row of data. just directly fetch the single row of data. 8. don't put static calculations inside of loops. the various date values shouldn't change during one report (where they are at now, they will if the request spans midnight.) put them before the start of the loop. 9. don't put quotes around numbers. 10. don't selected things that are not used and don't create variables that are not used (given the amount of code, the cases i saw of this may not be accurate.) 11. if you are looping to do something (should go away with JOINed queries), don't evaluate count() statements in the loop. determine the loop count, once, before the start of the loop. 12. doing some of these things will simplify variable naming. you won't have to think up unique names for variables because you will only have one instance in the code. 13. the $AffID is probably from external/unknown data. you should NOT put eternal/unknown data directly into an sql query statement. use a prepared query, with a place-holder for each data value, then supply the data when the query gets executed. switching to the much simpler php PDO extension will make using prepared queries easy compared to the php mysqli extension.
  34. 2 points
    In the absence of a reply, I estimated the radius to be about 3.5m from that photo. This gives a table of volmes and weights based on that radius. Note the absence of if..., if..., if..., if...) <?php const R = 350; // radius of tank cm NOTE: estimated - replace with actual radius const HC = 40; // cone height cm function tank_volume ($h) { $k = M_PI * R**2 ; if ($h <= HC) { $vol = $k * $h / 3 ; } else { $vol = $k * HC / 3 + $k * ($h - HC); } return $vol; } $results = []; foreach (range(1,500) as $h) { $vol = tank_volume($h); $results[] = [ 'ht' => $h, 'vol' => number_format($vol, 0), 'Kg' => number_format($vol/1000, 0) ]; } $chunks = array_chunk($results,100); $output = ''; foreach ($chunks as $ch) { $output .= "<div class='output'> <table><tr><th>Height<?th><th>Volume (cc)</th><th>Kg</th></tr> "; foreach ($ch as $res) { $cls = $res['ht'] < 41 ? "class='cone'" : ''; $output .= "<tr $cls><td>".join('</td><td>', $res)."</td></tr>\n"; } $output .= "</table></div>\n"; } ?> <!DOCTYPE html> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <meta name="generator" content="PhpED 18.0 (Build 18044, 64bit)"> <title>Tank Volumes</title> <meta name="author" content="Barand"> <link rel="shortcut icon" href=""> <meta name="creation-date" content="02/01/2019"> <style type='text/css'> body { font-family: calibri, arial, sans-serif; font-size: 10pt; } #title { height: 50px; font-size: 24px; font-weight: 600; background-image: linear-gradient(#2DABE1, #FFFFFF); color: #FFF; padding: 15px; } .output { width: 300px; font-size: 20px; float: left; padding: 2px; border-right: 1px solid #BB9A21; } table { width: 100%; font-size: 10pt; } th { background-color: #BB9A21; color: #FFF; padding: 5px; } td { text-align: right; padding: 2px 5px; } .cone { background-color: #EEE; } </style> </head> <body> <div id='title'>Tank Volumes and Weights</div> <?=$output?> </body> </html> Sample output
  35. 2 points
    Use absolute URLs <link rel="shortcut icon" href="/images/favicon.ico.png"> <a href="/index"> <img src="/images/logo.PNG" alt="logo" /> I don't understand how so many people can be unaware of them.
  36. 2 points
    Use array_intersect(), arrays, and CSS and save yourself all that repetition <?php $arrays = [ 'A' => [2, 6, 8, 11, 14, 18, 24], 'B' => [1, 2, 9, 10, 13, 14, 25, 28], 'C' => [1, 3, 7, 9, 13, 15, 20, 21, 24], 'D' => [4, 5, 12, 22, 23, 27, 28, 29] ]; $input = '2,15,37,13,28'; $parts = explode(',', $input); ?> <!DOCTYPE html> <html> <title>Example</title> <style type='text/css'> table { border-collapse: collapse; } th, td { font-family: verdana,arial,helvetica,sans-serif; font-size: 12px; } th { background-color: #DCDCDC; color: #000; text-align: left; padding: 4px; } td { padding: 4px; } </style> <body> <table border='1'> <?php foreach ($arrays as $gp => $a) { echo "<tr><th>GROUP $gp</th><td>" . join(', ', array_intersect($a, $parts) ) . "</td></tr>\n"; } ?> </table> </body> </html>
  37. 2 points
    It also doesn't say so on the documentation for explode() or mysqli_connect(). That function is part of the GeoIP package, which has a whole section dedicated to setting it up.
  38. 2 points
    OK, I've donned my red costume and white beard. Here's an example of displaying more or less text Data CREATE TABLE `product` ( `product_id` int(11) NOT NULL AUTO_INCREMENT, `description` text, PRIMARY KEY (`product_id`) ) ENGINE=InnoDB DEFAULT CHARSET=utf8; INSERT INTO `product` (`description`) VALUES ('Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Maecenas porttitor congue massa. Fusce posuere, magna sed pulvinar ultricies, purus lectus malesuada libero, sit amet commodo magna eros quis urna. Nunc viverra imperdiet enim. Fusce est. Vivamus a tellus. Pellentesque habitant morbi tristique senectus et netus et malesuada fames ac turpis egestas. Proin pharetra nonummy pede. Mauris et orci. Aenean nec lorem.'), ('In porttitor. Donec laoreet nonummy augue. Suspendisse dui purus, scelerisque at, vulputate vitae, pretium mattis, nunc. Mauris eget neque at sem venenatis eleifend. Ut nonummy. Fusce aliquet pede non pede. Suspendisse dapibus lorem pellentesque magna. Integer nulla. Donec blandit feugiat ligula. Donec hendrerit, felis et imperdiet euismod, purus ipsum pretium metus, in lacinia nulla nisl eget sapien.'), ('Donec ut est in lectus consequat consequat. Etiam eget dui. Aliquam erat volutpat. Sed at lorem in nunc porta tristique. Proin nec augue. Quisque aliquam tempor magna. Pellentesque habitant morbi tristique senectus et netus et malesuada fames ac turpis egestas. Nunc ac magna. Maecenas odio dolor, vulputate vel, auctor ac, accumsan id, felis. Pellentesque cursus sagittis felis.'); Example code <?php include('db_inc.php'); $db = pdoConnect("test"); // connect to "test" database // // this bit handles the AJAX request to get the full or partial description // if (isset($_GET['ajax'])) { $stmt = $db->prepare("SELECT description FROM product WHERE product_id = ? "); $stmt->execute( [ $_GET['id'] ] ); $descrip = $stmt->fetchColumn(); switch ($_GET['ajax']) { case 'more': $less = "<span class='less' data-id='{$_GET['id']}'> (less)</span>"; exit($descrip.$less); // send back the description in the ajax response case 'less': $words = explode(' ', $descrip); $partial_descrip = join(' ', array_slice($words, 0, 25)); $more = "<span class='more' data-id='{$_GET['id']}'> ...more</span>"; exit($partial_descrip.$more); } } // // select the product details from the table // $res = $db->query("SELECT product_id , description FROM product "); ?> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <meta name="generator" content="PhpED 18.0 (Build 18044, 64bit)"> <title>Example</title> <style type='text/css'> .descrip { font-family: verdana, sans-serif; font-size: 10pt; margin-left: 50px; width: 50%; } .more, .less { color: blue; cursor: pointer; } </style> <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script> <script type='text/javascript'> $().ready( function() { $(".more").click( function() { var id = $(this).data('id') var target = $(".descrip[data-id="+id+"]") // find descrip div with matching data-id $.get ( "", // send request to "self" { "ajax" : "more", "id" : id }, function(resp) { target.html(resp) // put returned description in target div enableLess() }, "TEXT" ) }) }) function enableLess() { $(".less").click( function() { var id = $(this).data('id') var target = $(".descrip[data-id="+id+"]") // find descrip div with matching data-id $.get ( "", // send request to "self" { "ajax" : "less", "id" : id }, function(resp) { target.html(resp) // put returned description in target div }, "TEXT" ) }) } </script> </head> <body> <?php // // display the data, putting description in its own div // foreach ($res as $row) { $words = explode(' ', $row['description']); $partial_descrip = join(' ', array_slice($words, 0, 25)); // show first 25 words of description $more = "<span class='more' data-id='{$row['product_id']}'> ...more</span>"; echo "<div class='product'> <h3>Product {$row['product_id']}</h3> <div class='descrip' data-id='{$row['product_id']}'> <h4>Description</h4> $partial_descrip $more </div> </div>\n"; } ?> </body> </html> Sample output
  39. 2 points
    You could assign the event names to an array, for example: $name = array(); while ($row_events = $sth_events->fetch(PDO::FETCH_ASSOC)) { $name[] = $row_events['name']; } Then you could use implode() to output the array. Note that I streamlined the following code a bit: $week .= '<td><div class="'; $week .= ($today == $date) ? 'today' : 'day'; $week .= '">' . $day . '</div>' . implode('<br>', $name) . '</td>'; With that said, it would be better to rewrite the script, as requinix is suggesting, so that you're not running queries inside of loops.
  40. 2 points
    I've been wrestling with this logic puzzle for days... My website lists item prices as they are posted: First item: item# ABC1234 = Hammer $5.00 Visitor then submits (to the same page) more item numbers (e.g. item# DEF9999) and the displayed list will grow: item# ABC1234 = Hammer $5.00 item# DEF9999 = Crowbar $6.00 --------------------------------------- However, when website gets visited via Affiliate, I want PHP to launch a Session to "remember" the First Referred Item, along with the Affiliate: // http://www.example.com/salePrice.php?Affiliate=SomeExampleCompany&item=ABC1234 <?php if(isset($_GET["Affiliate"])) { session_start(); $_SESSION["Affiliate"] = sanitized($_REQUEST["Affiliate"]); $_SESSION["item"] = sanitized($_REQUEST["item"]); } ?> <body> <form action="salePrice.php" method="post"> etc. etc. etc. The problem: Session won't stay running if visitor subsequently posts more items to the same page. (I thought once a Session starts, the Session will run as long as you don't navigate away from the page.) Without having to put "session_start()" on the top of the page (and have Sessions running no matter what), what is the trick to get this to work?
  41. 2 points
    OR if you use the same named hidden field for all the forms, 'action' for example, each with a unique value, you can eliminate any isset() tests for that field since it will be set if the request method is post.
  42. 2 points
    Added some extra lines to facilitate output (commented) <?php $results = []; $teamnames = []; // array to gather the unique team names foreach ($data as $yr => $ydata) { if (!isset($results[$yr])) { $results[$yr] = []; } foreach ($ydata as $tdata) { if (!isset($results[$yr][$tdata['team']])) { $results[$yr][$tdata['team']] = 0; } $results[$yr][$tdata['team']] += $tdata['value']; $teamnames[$tdata['team']] = 0; // put teamname in array as the key. } } $thead = "<tr><th>Year</th><th>" . join('</th><th>', array_keys($teamnames)) . "</th></tr>\n"; $tdata = ''; foreach ($results as $yr => $tresults) { $totals = $teamnames; // copy of the empty teamnames array foreach ($tresults as $tm => $tot) { $totals[$tm] = $tot; /// put the totals into the team column } $tdata .= "<tr><td>$yr</td><td>" . join('</td><td>', $totals) . "</td></tr>\n"; } ?> <html> <body> <table border='1' style='border-collapse:collapse'> <?=$thead?> <?=$tdata?> </table> </body> </html>
  43. 2 points
    One of the lines comes from the engine is controlled by the display_errors ini setting. These are printed on STDOUT. The second line is from the -l setting showing the specific error it encountered. These are printed on STDERR. So, you can do two different things. 1) You could turn off display_errors to prevent one of the messages on STDOUT. You can do this by passing -d display_errors=0 2) You could redirect either STDOUT or STDERR to /dev/null (or elsewhere) to ignore or capture them specifically.
  44. 2 points
    use array_filter() with the ARRAY_FILTER_USE_KEY flag set. EDIT: Of course the easiest method is not to put data into the array that you then want to remove PS If you prefer to use a foreach loop then $result = []; foreach ($array as $k => $v) { if ($k) { $result[$k] = $v; } }
  45. 2 points
    As you are sorting on "name", which is the first element of the sub-arrays, you can just use an ordinay sort() or rsort() call. (By default it will sort on the values oof the first element) EG $tadminlist["pvp"] = [ [ 'name' => 'mapname1', 'type' => 'pvp', 'beta' => 'y', 'final' => 'n', 'modded' => '', 'classification' => 'land', 'sf' => 'n', 'tod' => 'dawn', 'weather' => 'fog', 'es2' => 'y' ], [ 'name' => 'mapname3', 'type' => 'pvp', 'beta' => 'yy', 'final' => 'n', 'modded' => 'y', 'classification' => 'air', 'sf' => 'y', 'tod' => 'day', 'weather' => 'rain', 'es2' => 'n' ], [ 'name' => 'mapname2', 'type' => 'pvp', 'beta' => 'n', 'final' => 'y', 'modded' => 'n', 'classification' => 'sea', 'sf' => 'n', 'tod' => 'night', 'weather' => 'clear', 'es2' => 'n' ], ]; echo "line = " . join(', ', array_keys($tadminlist["pvp"][0])) . '<br><br>'; listData($tadminlist["pvp"]); echo "<br>SORTED ASC<br>"; sort($tadminlist["pvp"]); listData($tadminlist["pvp"]); echo "<br>SORTED DESC<br>"; rsort($tadminlist["pvp"]); listData($tadminlist["pvp"]); function listData($arr) { foreach ($arr as $tlist) echo join(', ', $tlist) . '<br>'; } OUTPUTS line = name, type, beta, final, modded, classification, sf, tod, weather, es2 mapname1, pvp, y, n, , land, n, dawn, fog, y mapname3, pvp, yy, n, y, air, y, day, rain, n mapname2, pvp, n, y, n, sea, n, night, clear, n SORTED ASC mapname1, pvp, y, n, , land, n, dawn, fog, y mapname2, pvp, n, y, n, sea, n, night, clear, n mapname3, pvp, yy, n, y, air, y, day, rain, n SORTED DESC mapname3, pvp, yy, n, y, air, y, day, rain, n mapname2, pvp, n, y, n, sea, n, night, clear, n mapname1, pvp, y, n, , land, n, dawn, fog, y To sort by any other element would require usort, eg to sort by classification usort($tadminlist["pvp"], function($a, $b) { return $a['classification'] <=> $b['classification']; } );
  46. 2 points
    1) set php's error_reporting to E_ALL. it is not set to report exceptions and fatal runtime errors, you won't see anything for these type of errors. 2) on the old machine, what 'engine' were the tables using, InnoDB or MyISAM? if they were using MyISAM, then the various commit statements where having no affect and the queries were being executed in the order they are in the php code. 3) the usage of the various commit statements are causing the INSERT and UPDATE queries to not actually be executed until you call the ->commit() method. for prepared queries, i don't know what value the ->execute() calls return for INSERT/UPDATE queries since they are actually being executed later. 4) for the SELECT/INSERT/UPDATE queries for the vis_mistakes table. you can use one INSERT ... ON DUPLICATE KEY UPDATE ... query. if this is the reason you think you need to use the various commit statements, eliminate them and use this one query. 5) the 'output' you have posted doesn't seem to exactly match the posted code and it includes the UPDATE mysessda ... sql which should not be output if the code is really stopping, skipping conditional logic, or transferring execution to any exception handler/php. 6) speaking of an exception handler, since your code is throwing its own exceptions, do you have a custom exception handler and if so, what does it do for exception types that it does not handle, such as mysqli exceptions?
  47. 2 points
    Take a look at these two lines of code $row = mysqli_fetch_assoc($result); while($row = mysqli_fetch_assoc($result)){ and tell your rubber duck what they are doing.
  48. 2 points
    I'd go a step further and give all the checkboxes the same name EG name='problem[]' so they are posted as an array <label><input type="checkbox" name="problem[]" value="Hard Drive Crashed"> Hard Drive Crashed</label><br> <label><input type="checkbox" name="problem[]" value="Has Virus"> Has Virus</label><br> <label><input type="checkbox" name="problem[]" value="Needs Operating System"> Needs Operating System</label><br> <label><input type="checkbox" name="problem[]" value="Needs Microsoft Office"> Needs Microsoft Office</label><br> <label><input type="checkbox" name="problem[]" value="Interested In Backup Services"> Interested In Backup Services</label><br> <label><input type="checkbox" name="problem[]" value="Wants A Custom PC Build"> Wants A Custom PC Build</label><br> In your processing foreach ($_POST['problem'] as $problem) { echo $problem . '<br>'; }
  49. 2 points
    I found it here Or did you have something more like this in mind? Save this code as "stave.svg" <svg width="1000" height="200" viewBox="0 0 1000 200"> <defs> <style type="text/css"> .trebleclef { fill: black; font-size: 50pt; } .bassclef { fill: black; font-size: 40pt; } .curly { fill: black; stroke: none; font-size: 110pt; font-weight: 100; } .stave { stroke-width: 1px; stroke: gray; fill: none; } </style> </defs> <!-- treble --> <line x1='40' y1='30' x2='960' y2='30' class='stave' /> <line x1='40' y1='38' x2='960' y2='38' class='stave' /> <line x1='40' y1='46' x2='960' y2='46' class='stave' /> <line x1='40' y1='54' x2='960' y2='54' class='stave' /> <line x1='40' y1='62' x2='960' y2='62' class='stave' /> <text x='44' y='65' class='trebleclef'>&#x1D11E;</text> <!-- bass --> <line x1='40' y1='130' x2='960' y2='130' class='stave' /> <line x1='40' y1='138' x2='960' y2='138' class='stave' /> <line x1='40' y1='146' x2='960' y2='146' class='stave' /> <line x1='40' y1='154' x2='960' y2='154' class='stave' /> <line x1='40' y1='162' x2='960' y2='162' class='stave' /> <text x='44' y='165' class='bassclef'>&#x1D122;</text> <!-- stave ends --> <text x='-20' y='132' class='curly'>{</text> <path d="M 40 30 L 40 162" class='stave' /> <path d="M 960 30 L 960 162" class='stave' /> </svg> Then, in your html <div><?php include 'stave.svg'?></div> <div><?php include 'stave.svg'?></div> <div><?php include 'stave.svg'?></div> Which should give you
  50. 2 points
    Commencing with test_config.txt as # interface eth0 subnet 10.0.10.0 netmask 255.255.255.0 { } host cm-test1 { hardware ethernet 78:8d:f7:2b:bc:79; fixed-address 172.17.12.80; filename "srv-050.cfg"; } host cm-test2 { hardware ethernet 5c:35:3b:4d:73:4b; fixed-address 172.17.13.119; filename "srv-042.cfg"; } host cm-instrumenti { hardware ethernet 78:8d:f7:2b:bc:79; fixed-address 172.17.12.80; filename "srv-050.cfg"; } host cm-nimonmehmetaj { hardware ethernet 5c:35:3b:4d:73:4b; fixed-address 172.17.13.119; filename "srv-042.cfg"; } This is one way $unwanted = [ 'cm-instrumenti', 'cm-nimonmehmetaj' ]; // unwantedt host names $text = file_get_contents('test_config.txt'); $config = array_map('trim',explode('}', $text)); $new_config = array_filter($config, function ($v) use($unwanted) { foreach ($unwanted as $name) { if (strpos($v, $name)!==false) return false; // remove unwanted elements } return $v!=''; // remove blank entries }); file_put_contents('new_config.txt', join("\n}\n", $new_config) . "\n}\n"); giving new_config.txt as # interface eth0 subnet 10.0.10.0 netmask 255.255.255.0 { } host cm-test1 { hardware ethernet 78:8d:f7:2b:bc:79; fixed-address 172.17.12.80; filename "srv-050.cfg"; } host cm-test2 { hardware ethernet 5c:35:3b:4d:73:4b; fixed-address 172.17.13.119; filename "srv-042.cfg"; }
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