Jump to content

Leaderboard

Popular Content

Showing content with the highest reputation since 09/23/2012 in Posts

  1. Barand
    Something like this? CODE <?php include 'db_inc.php'; // YOUR CONNECTION $pdo = pdoConnect('movies'); // CODE GOES HERE ################################################################################ ## PROCESS AJAX REQUESTS ################################################################################ if (isset($_GET['ajax'])) { $res = $pdo->prepare("SELECT m.id as movie_id , m.title , m.image , g.description as genre , CONCAT(m.running_time DIV 60, ' hrs ', m.running_time % 60, ' mins') as running_time , date_format(sg.screen_on, '%W, %D %b') as date , s.name as screen_num , TIME_FORMAT(sg.screen_at, '%H:%i') as start_time FROM screening sg JOIN screen s ON sg.screen_id = s.id JOIN movie m ON sg.movie_id = m.id JOIN genre g ON g.id = m.genre WHERE dayname(screen_on) = :day ORDER BY movie_id, screen_on, sg.screen_at "); $res->execute([ 'day' => $_GET['day'] ]); $data = []; # # Put data into an array with same structure a required output # - array of movies, each movie having arrays of screenings # foreach ($res as $r) { if (!isset($data[$r['movie_id']])) { $data[$r['movie_id']] = [ 'title' => $r['title'], 'image' => $r['image'], 'genre' => $r['genre'], 'runtime' => $r['running_time'], 'screenings' => [] ]; } $data[$r['movie_id']]['screenings'][$r['date']][] = ['start' => $r['start_time'], 'sno' => $r['screen_num'] ]; } exit(json_encode($data)); } ?> <!DOCTYPE html> <html lang="en"> <head> <meta name="generator" content="PhpED 12.0 (Build 12010, 64bit)"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>olumide</title> <link rel="stylesheet" href="https://www.w3schools.com/w3css/4/w3.css"> <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.2.1/css/all.min.css"> <script src="https://code.jquery.com/jquery-3.6.0.min.js"></script> <script type='text/javascript'> function showScreenings(day) { $("#movie-listings").html("") $.get( "", {"ajax":1, "day":day}, function(resp) { $.each(resp, function(mid, mdata) { let title = `<h2>${mdata.title}</h2><h4 class='w3-text-gray'>${mdata.genre} (${mdata.runtime})</h4>` $("#movie-listings").append(title) $.each(mdata.screenings, function(dt, ddata) { let datesub = `<h3>${dt}</h3>` $("#movie-listings").append(datesub) $("#movie-listings").append("<div class='screenings'") $.each(ddata, function(k, sdata) { let scr = `<div class='screening'><b>${sdata.start}</b><br>${sdata.sno}</div>` $("#movie-listings").append(scr) }) $("#movie-listings").append("</div>") }) }) }, "JSON" ) } </script> <style type='text/css'> .days { padding: 16px; text-align: center; } .screening { width : 20%; display: inline-block; margin-right: 16px; margin-bottom: 8px; padding: 4px; border: 5px solid black; font-size: 9pt; } </style> </head> <body> <nav class="days"> <button onclick="showScreenings('Monday')">Monday</button> <button onclick="showScreenings('Tuesday')">Tuesday</button> <button onclick="showScreenings('Wednesday')">Wednesday</button> <button onclick="showScreenings('Thursday')">Thursday</button> <button onclick="showScreenings('Friday')">Friday</button> <button onclick="showScreenings('Saturday')">Saturday</button> <button onclick="showScreenings('Sunday')">Sunday</button> </nav> <div id='movie-listings'class='w3-content w3-padding w3-card-4'> <!-- LISTINGS GO HERE --> </div> </body> </html>
    3 points
  2. gizmola
    I guess you don't understand that phpfreaks is a free site, with expert help provided by volunteers. Given the fact that everyone is donating their time and expertise to try and help people like yourself, the argument that you host a free site with source code you got from somewhere else for free, means you shouldn't ever have to learn anything (which can be learned in a few hours) will not get you much sympathy here.
    3 points
  3. Barand
    By far the best the best way is to fix whatever they are warning you about.
    3 points
  4. gizmola
    @HawkeNN I want to clarify some things for you. Most code that was written for PHP 7.x will still run fine under php 8. For the most part PHP 8 added new features. There are "Breaking Changes" that were made, listed here: https://www.php.net/manual/en/migration80.incompatible.php but it is unlikely that is the problem with your code from some of the errors I saw listed. For example, the "headers already sent" error is a common one and has been around since php 3 at least. It has to do with code that sends output to the browser (as in the case of a script that intermixes HTML and php) and then tries to set HTTP header values. At that point, the HTTP request has already been sent with whatever headers it had, and it's too late to add or modify them. PHP session use is one function that sets header values because it sets a cookie. Some of the advice that you got is related to common techniques for trying to solve the issue. Equally important is your hosting configuration for PHP. Changes to the configuration of PHP from a version upgrade, can turn on settings that might have been off previously, or warnings being emitted that weren't before. This can then trigger output which also causes the "headers already sent" message. I suspect that this is part of your problem here, and really requires some debugging of your hosting setup. This was already brought up to you, in that there will be a php.ini (and often other assorted xyz.ini files that are included by the main php.ini) where settings can be made or changed to re-configure php. In conclusion, this is a PHP developer forum. From looking at this thread, you aren't likely to have a good outcome here, because you aren't a php developer. My sincere advice is to just find yourself a developer (this forum is chock full of them) you can pay a fee to, in order to resolve your issues and get your site working again. We have established that the code is bad, and that there is likely a few different things going on that are somewhere between the configuration of your server to possible improvements to the code you have. In other words, this is a problem for an experienced developer that requires debugging. I probably shouldn't say this, but my knee jerk reaction is that getting your code to work is not that big of a job, but looking at a thread like this is frustrating to read, because in my experience it is not going anywhere. There isn't any long term value to it for our forum, and you are not going to become an active member of the forum, nor learn PHP development, so there is nothing in it for us, or the community at large.
    3 points
  5. Barand
    With a couple of db tables like this Table: user Table: role +---------+----------+--------+ +---------+---------------+-----------+------------+ | user_id | username | points | | role_id | role_name | point_min | points_max | +---------+----------+--------+ +---------+---------------+-----------+------------+ | 1 | John | 66 | | 5 | - | 0 | 100 | | 2 | Paul | 101 | | 6 | Contributor | 101 | 1000 | | 3 | George | 3000 | | 7 | Author | 1001 | 10000 | | 4 | Ringo | 200000 | | 8 | Editor | 10001 | 100000 | +---------+----------+--------+ | 9 | Administrator | 100001 | 999999999 | +---------+---------------+-----------+------------+ Then a simple query SELECT username , rolename FROM user u JOIN role r ON u.points BETWEEN r.points_min AND r.points_max; does the job for you +----------+---------------+ | username | rolename | +----------+---------------+ | John | - | | Paul | Contributor | | George | Author | | Ringo | Administrator | +----------+---------------+
    3 points
  6. Barand
    Use DATE type columns for your dates, not varchar. Have your leaving dates either a valid date or NULL. SELECT eemp_id , fname , lname , AVG(timestampdiff(MONTH, joining_date, coalesce(leaving_date, curdate()))) as av_mths FROM employee_details ed JOIN employee e ON e.empid = ed.eemp_id GROUP BY eemp_id HAVING av_mths >= 36;
    3 points
  7. Barand
    If you are outputting an image from a DB blob field, then here's an example... // EMULATE DATA FROM THE DATABASE $type = 'image/png'; $comments = '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.'; $image_data = file_get_contents('images/snowman.PNG'); // OUTPUT THE DATA echo "<div style='width:396;'> <img src='data:{$type};base64," . base64_encode( $image_data ) . "' width='394' height='393'> <p>$comments</p> "; RESULT
    3 points
  8. Barand
    Don't use "SELECT * ". Specify the columns you want. This makes it easier for others, like me, to understand what is in the table and what the query is doing. Indent your code to show the nested structure of loops etc. If you had done those I might have given this problem more than a cursory glance. So you'll have to settle for a generic example of using a recursive function to give an indented list of parent/child elements. Also, Don't run queries inside loops. Use JOINs to get all the data in a single query THE DATA TABLE: category +----+---------+--------+ | id | name | parent | +----+---------+--------+ | 1 | happy | 0 | | 2 | comet | 0 | | 3 | grumpy | 0 | | 4 | prancer | 1 | | 5 | bashful | 1 | | 6 | dancer | 2 | | 7 | doc | 2 | | 8 | blitzen | 2 | | 9 | dasher | 3 | | 10 | donner | 1 | | 11 | vixen | 1 | | 12 | cupid | 8 | +----+---------+--------+ THE OUTPUT THE CODE <?php $sql = "SELECT id, name, parent FROM category"; $res = $db->query($sql); // // store arrays of items for each parent in an array // while (list($id, $name, $parent) = $res->fetch(PDO::FETCH_NUM)) { $data[$parent][] = array('id'=>$id, 'name'=>$name); } /** * recursive function to print a category then its child categories * * @param array $arr category data * @param int $parent parent category * @param int $level hierarchy level */ function displayHierarchy(&$arr, $parent, $level=0) { if (isset($arr[$parent])) { echo "<ul>\n"; foreach($arr[$parent] as $rec) { echo "<li class='li$level'>{$rec['name']}\n"; if (isset($arr[$rec['id']])) displayHierarchy($arr, $rec['id'], $level+1); echo "</li>\n"; } echo "</ul>\n"; } } ?> <!DOCTYPE html> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <title>Example</title> <link rel="stylesheet" href="https://www.w3schools.com/w3css/4/w3.css"> <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script> <script type="text/javascript"> </script> <style type="text/css"> body { font-family: verdana,sans-serif; font-size: 11pt; padding: 50px; } li { font-weight: 600;} .li0 { color: red; } .li1 { color: green; } .li2 { color: blue; } </style> </head> <body> <?php displayHierarchy($data, 0); ?> </body> </html>
    3 points
  9. requinix
    Too many people are obsessed with "filtering" bad inputs. You don't have to "filter" anything. You don't have to remove HTML tags. You don't have to remove SQL keywords. You don't have to strip quotes or backslashes. All you have to do is make sure that whatever the user typed doesn't screw around with what you're trying to do. Want to put it into HTML? Make sure it doesn't screw around with your HTML. Want to put it into SQL? Make sure it doesn't screw around with your SQL. Want to send it in JSON? Make sure it doesn't screw around with your JSON. And every single one of those situations has a simple, single best-practice solution: HTML? Use htmlspecialchars with ENT_QUOTES* and the correct charset. SQL? Use prepared statements. JSON? Use json_encode. That's it. No filter_vars or filter_inputs, no strip_tags, no regular expressions, nothing stupid like that. User wants to look cool and type <script> tags into their forum post? Go ahead and let them, because it'll just show up as plain and simple text. Like it just did now. * Only actually required if you are putting the input into an single quote-delimited tag attribute. Using double quotes for your attributes? Not outputting into an HTML tag? Then you don't technically need ENT_QUOTES.
    3 points
  10. Barand
    I enjoy the challenge when someone posts a problem I can get my teeth into.
    3 points
  11. requinix
    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 points
  12. Barand
    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 )
    3 points
  13. requinix
    Don't use $GLOBALS. Forget it exists. There is never a good reason to use it. Pretend you never saw it.
    3 points
  14. Barand
    +----------------+ +----------------+ | 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 |<----------+ +----------+
    3 points
  15. mac_gyver
    the most common reason for a password_hash()/password_verify() to fail is because the database column is not long enough to hold the hashed value. another common reason are programming mistakes in the form/form processing code and a lack of server-side validation that results in the hash value not actually being from the password that was submitted in the registration code, or the value being used in the login code not being what you think it is. your post method form processing code should always trim the input data, mainly so that you can detect if all white-space characters were entered, then validate all inputs before using them.
    2 points
  16. mac_gyver
    the file system path/filename must be to where the file is located on the disk, either using a relative path (relative to the file with the include/require starting in it) or an absolute path. a leading / refers to the root of the current disk, which is doubtful where that file is located, and which will be producing a php error about a non-existent path/file. you must get php to help you by reporting and displaying all the errors it detects. you can temporarily set php's error_reporting/display_errors in your code (you will want to remove the settings when you are done learning, developing, and debugging). you can add the following immediately after the first opening <?php tag in the main file - ini_set('display_errors', '1'); error_reporting(-1);
    2 points
  17. requinix
    First step to manually parsing HTML is to stop manually parsing HTML. Use DOM instead.
    2 points
  18. mac_gyver
    you are doing 'date-ination'. it's like pagination, but using dates. you should be using a get request to determine what will be displayed on the page. this is so that if someone finds a result they would like to return to or share, they can bookmark or share the URL and can return to the same result. the dates you pass in the URL should be a standard YYYY-MM-DD format. format the dates as 'l j M' only when you display them. you would default to the current monday if there is no get input. you would produce the previous/next links with the previous/next monday's date and include any existing get parameters so that if you add other search/filters, they will automatically get propagated in the URL between pages. example code - <?php date_default_timezone_set('America/Denver'); // default to the current monday if there is no get input if(!isset($_GET['fdw'])) { $dw = new DateTime('monday this week'); $fdw = $dw->format('Y-m-d'); } else { // you should validate that the get input is a properly formatted date - code left up to you $fdw = $_GET['fdw']; } // use $fdw in your code to produce the output $dw = new DateTime($fdw); echo $dw->format('l j M') . '<br>'; // get a copy of any existing get parameters $get = $_GET; // produce the previous link // calculate previous date $dw = new DateTime($fdw); $pw = $dw->modify('-1 week'); $pfdw = $pw->format('Y-m-d'); // set the fdw element $get['fdw'] = $pfdw; // build the query string part of the url $qs = http_build_query($get,'','&amp;'); echo "<a href='?$qs'><button>< Previous Week</button></a>"; // produce the next link // calculate next date $dw = new DateTime($fdw); $nw = $dw->modify('+1 week'); $nfdw = $nw->format('Y-m-d'); // set the fdw element $get['fdw'] = $nfdw; // build the query string part of the url $qs = http_build_query($get,'','&amp;'); echo "<a href='?$qs'><button>Next Week ></button></a>";
    2 points
  19. Barand
    Judicious application of array key names can greatly increase the efficiency and simplicity of your code. Consider this simplified version of the questions/options form code <form method='post' > <?php for ($qno=1; $qno<=2; $qno++) { echo <<<HTML <label> Sub Question $qno <span class="req">*</span> <textarea cols="46" rows="3" name="Q[$qno][question]" placeholder="Enter Sub question here.."></textarea> </label> <ul> HTML; for ($opt='A'; $opt<='D'; $opt++) { echo <<<HTML <li>Choice $qno$opt (text)&nbsp; <input type='text' name="Q[$qno][opts][$opt]" placeholder="Enter Choice A here.." size='40'> </li><br><br>\n HTML; } echo "</ul><hr>\n"; } ?> <input type='submit'> </form> producing... When the form is submitted, the POST array is like this... Array ( [Q] => Array ( [1] => Array ( [question] => aaaaaaaaaaaaaaaaaaaaaaaaaaa [opts] => Array ( [A] => aa [B] => bb [C] => cc [D] => dd ) ) [2] => Array ( [question] => bbbbbbbbbbbbbbbbbbbbbbbbb [opts] => Array ( [A] => ww [B] => xx [C] => yy [D] => zz ) ) ) ) Now you can easily iterate through the array to write the questions/options to you database foreach ( $_POST['Q'] as $qno => $qdata ) { write $qno and $qdata['question'] to question table save last insert id as $qid foreach ( $qdata['opts'] as $ono => $choice ) { write $qid, $ono, $choice to choice table } } Job Done.
    2 points
  20. Barand
    FYI - Matthew.
    2 points
  21. Barand
    Once again we have no idea what the data you are processing looks like. Post the output from this code... echo '<pre>' . var_export($data, 1) . '</pre>';
    2 points
  22. mac_gyver
    the code is doing exactly what it was written to do, build a <tr><td>num</td></tr> for each number. if you want to produce a single <tr></tr>, you would need to add the opening <tr> before the start of the looping and add the closing </tr> after the end of the looping.
    2 points
  23. Barand
    @gizmola With my model you would need to bring the ticket date into the equation SELECT s.id, s.row, s.seat_no FROM seat s LEFT JOIN booking b ON b.seat_id = s.id AND b.screening_id = 35 AND B.ticket_date = '2024-01-03' -- also required WHERE s.screen_id = 1 AND b.id IS NULL; As it is, a screening record states that the movie will be screened at time T each day between X and Y. On reflection, although requiring more rows, it would be better to have a screening record for every individual screening, giving... then your query would work as it is. Alternatively, to get vacant seats for a screening (and only requiring the screening id as input - if the screening id is known then the screen id is also known) you could SELECT s.id, s.row, s.seat_no FROM screening sg JOIN seat s ON sg.screen_id = s.screen_id LEFT JOIN booking b ON b.screening_id = sg.id AND b.seat_id = s.id WHERE sg.id = 35 AND b.id IS NULL
    2 points
  24. kicken
    I've never used it personally but I've heard good things about rector.
    2 points
  25. Barand
    What does it do when you try it?
    2 points
  26. Barand
    try $res = $pdo->query("SELECT storeid , description FROM merge ORDER BY storeid "); foreach ($res as $r) { $data[$r['storeid']][] = $r['description']; } echo "<table>\n"; foreach ($data as $store =>$prods) { echo "<tr style='vertical-align: top;'><td>$store</td><td>" . join('<br>', $prods) . "</td></tr>\n"; } echo "</table>\n";
    2 points
  27. Barand
    Alternatively, assuming they all have same rigid structure, ... $fp = file('weather.html', FILE_IGNORE_NEW_LINES|FILE_SKIP_EMPTY_LINES); $data = []; foreach ($fp as $line) { switch (substr($line, 0, 4)) { case '<!--' : if ($line[4]!=' ') { $section = substr($line, 4, -8); } break; case '<td>' : list($name, $value) = getData($line); $data[$section][$name] = $value; break; default : continue 2; } } function getData($line) { $l = substr($line, 4, -5); return explode('</td><td>', $l); } // View the results echo '<pre>' . print_r($data, 1) . '</pre>'; giving ... $data = Array ( [MISCELLANEOUS] => Array ( [Name of Station] => AzureCove [City (from NOAA Setup)] => Garden City [State (from NOAA Setup)] => Utah [Elevation (from NOAA Setup)] => 5954 ft [Latitude (from NOAA Setup)] => 41° 56' 12" N [Longitude (from NOAA Setup)] => 111° 23' 20" W [Date on the PC] => 03/13/23 [Time on the PC] => 4:06a [UTC Time] => 10:06a [UTC Date] => 03/13/23 [Date on the Station] => 03/13/23 [Time on the Station] => 4:05a [Sunrise Time] => 7:41a [Sunset Time] => 7:30p [Current Weather Forecast *] => Partly cloudy with little temperature change. [Current Moon Phase] => Last Quarter [EMC] => --- [EMC Unit] => % [Air Density] => 0.0842 [Air Density Unit] => lb/cu.ft ) [INSIDE TEMPERATURE] => Array ( [Inside Temperature] => 42.5 [High Inside Temperature] => 43.6 [Time of High Inside Temperature] => 12:00a [Low Inside Temperature] => 42.5 [Time of Low Inside Temperature] => 3:41a [High Monthly Inside Temperature] => 45.4 [Low Monthly Inside Temperature] => 39.4 [High Yearly Inside Temperature] => 45.7 [Low Yearly Inside Temperature] => 39.4 ) [OUTSIDE TEMPERATURE] => Array ( [Outside Temperature] => 15.1 [High Outside Temperature] => 21.7 [Low Outside Temperature] => 15.1 [Time of High Outside Temperature] => 12:00a [Time of Low Outside Temperature] => 4:04a [High monthly Outside Temperature] => 46.1 [Low monthly Outside Temperature] => -11.3 [High yearly Outside Temperature] => 46.1 [Low yearly Outside Temperature] => -12.5 ) . . . )
    2 points
  28. gizmola
    So just to say it, the on event handler is accepting a callback function to run when there is a "play" event. A simpler solution would be to just have a function defined there, that the callback would run, or to define a function globally and pass the name of the function. However, @Kicken coded this function to return an anonymous function. It helps to focus in on return statements in code like this. If you notice the requestSent variable is declared outside the function declaration that does the work. This creates a "closure" (or takes advantage of javascript closure) depending on how you want to think about it. It makes the variable requestSent available to the inner function that is being returned, and this variable will continue to exist in the browser's memory associated with the window/page, until such a time as a new request is made that causes new html/javascript/css to be loaded. An alternative would be to declare requestSent globally and use that, but he gave you something more sophisticated -- a function that returns a function and takes advantage of a variable that is only visible to the anonymous function, and yet is available to the anonymous function across executions. Each time the callback is run, this could be either for the same song or a different song, so inside the function, there is a jQuery call to find the id of the button. let a_id = $(this).attr("id") It's good to think about why this is declared inside the function and how that works. Since this handler can be called for any song, the $(this) resolves in this situation as the song that is being played. Thus the a_id gets set each time there's a play event, and then gets the html id attribute. I added code to push the value onto the requestSent array, which again, since it's part of the closure for the anonymous function, survives across plays. I used Array.includes() to check if the song id already exists in requestSent. If not, I update requestSent with requestSent.push(a_id) and the ajax runs, passing a_id. The ajax is also being done using the jQuery library. The final question you should probably be asking is: if this is a function that returns a function, then how is it, that the callback, which requires a function to run, gets the actual function it needs. A function that returns a function is not a callback. The answer is that again Kicken used an IFFE here. What is actually being passed is a function that is immediately executed. You can see this because after the function definition function () { ... } It is immediately followed by the parens ie. () which causes javascript to execute the function. function () { ... }() So this code works because the function that returns a function, is run immediately, giving the callback parameter what it wants ... a function to run when a play event occurs. The function is anonymous and only bound to the event handler for play events, which also keeps global scope from being cluttered with a symbol table entry for a function that is only needed for the callback. The benefit of doing it this way is that he did not need to utilize a global variable, since closure takes care of this for you. This type of code is favored in many situations, since you don't have a slew of global variables floating around. Nothing outside the callback function can see or modify the requestSent array -- yet it is essentially a private environment that the callback uses. As I said previously -- advanced javascript stuff, that can be confusing if you are still learning javascript. Hope this helps -- using those terms (IFFE, javascript closure, js anonymous function, js callbacks, js this) will lead you to an enormous amount of additional material if you need to explore them further.
    2 points
  29. Barand
    OK - I've added the sort usort($test, fn($a, $b) => $b['itemCount']<=>$a['itemCount']); // sort descending itemCount $seen = []; foreach ($test as $k => &$rec) { $rec['rolanID'] = array_diff($rec['rolanID'], $seen); // find new ids if ($rec['rolanID']) { // if there are some new ones ... $rec['itemCount'] = count($rec['rolanID']); // count them $seen = array_merge($seen, $rec['rolanID']); // add the new ones to those already seen } else unset($test[$k]); // if no ids, remove the array item } and I now get this (no duplicate 123)... Array ( [0] => Array ( [supplier] => TEST2 DEPO [rolanID] => Array ( [0] => 456 [1] => 188 [2] => 200 [3] => 123 ) [itemCount] => 4 ) [1] => Array ( [supplier] => TEST DEPO [rolanID] => Array ( [1] => 234 ) [itemCount] => 1 ) [2] => Array ( [supplier] => DIFFERENT DEPO [rolanID] => Array ( [0] => 897 [1] => 487 [2] => 100 ) [itemCount] => 3 ) )
    2 points
  30. Barand
    Simple. Triple the page width and offset each label. require 'code128.php'; $data = ['item_name' => 'Fuel Vapour Hose' ,'code_purchase' => 'ABC-2342' ,'code_sale' => 'DFS-4312' ,'item_code' => '47900001' ]; class Barcode_Label extends PDF_Code128 { protected $data; //constructor public function __construct() { parent::__construct('L','mm',[190, 35]); } public function printLabel($data) { $this->setMargins(5,5,5); $this->SetAutoPageBreak(0); $this->AddPage(); $this->setFont('Times', 'B', 10); for ($lab=0; $lab<3; $lab++) { $offset = $lab * 65; $this->setXY($offset, 5); $this->Cell(50, 5, $data['item_name'], 0, 2, 'C'); $this->Cell(25, 5, $data['code_purchase'], 0, 0, 'C'); $this->Cell(25, 5, $data['code_sale'], 0, 2, 'C'); $barcode = $this->Code128($offset + 5,15,$data['item_code'],50,10); $this->setXY($offset, 25); $this->Cell(50, 5, $data['item_code'], 0, 1, 'C'); } } } #Barcode_Label $label= new Barcode_Label(); for ($i=0; $i<3; $i++) { $label->printLabel($data); } $label->Output(); [edit] PS I don't know your label dimensions so you may have to adjust offset, page size and margins
    2 points
  31. Barand
    Example $arr = [ [ 'A', 'Jan. 22, 22'], [ 'B', 'Dec. 25, 21'], [ 'C', 'Feb. 22, 22'], [ 'D', 'Jan. 2, 22'] ]; usort($arr, function($a, $b) { $da = DateTime::createFromFormat('M. j, y', $a[1]); $db = DateTime::createFromFormat('M. j, y', $b[1]); return $db <=> $da; }); echo '<pre>' . print_r($arr, 1) . '</pre>'; outputs Array ( [0] => Array ( [0] => C [1] => Feb. 22 22 ) [1] => Array ( [0] => A [1] => Jan. 22 22 ) [2] => Array ( [0] => D [1] => Jan. 2 22 ) [3] => Array ( [0] => B [1] => Dec. 25 21 ) )
    2 points
  32. requinix
    I use mostly PHP Debug and PHP Intelephense.
    2 points
  33. Barand
    Create an array of those field names which are to be read only, for example $readonly = ['id', 'username', 'email']; then $ro = (in_array($key, $readonly)) ? 'readonly' : '';
    2 points
  34. benanamen
    @gizmola and I both gave you code that you have not implemented. You should spend some time going through this PDO tutorial. Making a PDO connection is one of the simplest things you would ever need to do. https://phpdelusions.net/pdo This is all that is required to make a PDO connection. Anything you do beyond this, you should know exactly WHY you are doing more. $con = new PDO("mysql:host=localhost;dbname=test", 'root', '');
    2 points
  35. Psycho
    Probably not what you really want, but it is what you asked for: $midPt = floor(strlen($content)/2); $file["content"] = substr($content, 0, $midPt) . $context['user']['id'] . substr($content, $midPt);
    2 points
  36. Barand
    Doesn't your console have a "preserve" option? Or, add "return false" to the end of your submitData() function to stop the page refreshing
    2 points
  37. Barand
    These are the results I get (wordlist contains 351,100 records) $t1 = microtime(1); $res = $db->query("SELECT word FROM wordlist WHERE MATCH (word) AGAINST ('sang*' IN BOOLEAN MODE)"); $t2 = microtime(1); printf('Query 1 : %0.4f seconds<br>', $t2 - $t1); $t1 = microtime(1); $res = $db->query("SELECT word FROM wordlist WHERE word LIKE 'sang%'"); $t2 = microtime(1); printf('Query 2 : %0.4f seconds<br>', $t2 - $t1); results (74 words found) Query 1 : 0.0026 seconds Query 2 : 0.0005 seconds
    2 points
  38. Barand
    Rinse and repeat - exchanging u1 and u2 $new = []; foreach ($array as $a) { if (!isset($new[$a['u1']])) { $new[$a['u1']] = []; } $new[$a['u1']][] = $a['u2']; //repeat exchanging u1 and u2 if (!isset($new[$a['u2']])) { $new[$a['u2']] = []; } $new[$a['u2']][] = $a['u1']; } // // Output $new array // echo '<pre>'; foreach ($new as $u1 => $u2s) { printf('<br><b>%4d</b> | ', $u1); foreach ($u2s as $u) { printf('%4d &vellip;', $u); } }
    2 points
  39. requinix
    In case anyone comes here and wants to know what the answer was, since that wasn't shared, Problem 1 - phpunit/phpunit[9.3.3, ..., 9.5.x-dev] require ext-dom * -> it is missing from your system. Install or enable PHP's dom extension. - Root composer.json requires phpunit/phpunit ^9.3.3 -> satisfiable by phpunit/phpunit[9.3.3, ..., 9.5.x-dev]. phpunit requires ext-dom (aka the DOM extension) but apparently it's missing. Install it.
    2 points
  40. mac_gyver
    less... $matched = array_intersect_key($all, array_flip($referred_by_Affiliate));
    2 points
  41. Barand
    try foreach ($array as $k => $d) { if ($k > 0) { if (strtotime($d) > strtotime($array[$k-1])+6) { $new[] = "-------------------"; } } $new[] = $d; } $new = Array ( [0] => 2021-02-10 09:04:48 [1] => 2021-02-10 09:04:54 [2] => 2021-02-10 09:05:00 [3] => 2021-02-10 09:05:06 [4] => 2021-02-10 09:05:12 [5] => 2021-02-10 09:05:18 [6] => ------------------- [7] => 2021-02-10 09:06:18 [8] => 2021-02-10 09:06:24 ) [edit...] Alternative solution... $new = []; $newkey = 0; foreach ($array as $k => $d) { if ($k > 0) { if (strtotime($d) > strtotime($array[$k-1])+6) { $newkey++; } } $new[$newkey][] = $d; } gives $new = Array ( [0] => Array ( [0] => 2021-02-10 09:04:48 [1] => 2021-02-10 09:04:54 [2] => 2021-02-10 09:05:00 [3] => 2021-02-10 09:05:06 [4] => 2021-02-10 09:05:12 [5] => 2021-02-10 09:05:18 ) [1] => Array ( [0] => 2021-02-10 09:06:18 [1] => 2021-02-10 09:06:24 ) )
    2 points
  42. Barand
    OK, I loaded your data into a test table INSERT INTO ajoo_login (datein, dateout) VALUES ('2019-03-30 17:05:24', '2019-03-30 17:09:47'), ('2019-04-01 15:13:32', '2019-04-01 15:19:46'), ('2019-04-04 23:37:21', '2019-04-04 23:50:51'), ('2019-04-18 15:28:35', '2019-04-18 15:33:10'), ('2019-04-23 16:35:20', '2019-04-23 16:42:35'), ('2019-04-24 12:03:07', '2019-04-24 12:10:28'), ('2019-05-01 08:05:48', '2019-05-01 08:20:28'), ('2019-05-08 18:04:04', '2019-05-08 18:14:57'), ('2019-05-09 08:18:15', '2019-05-09 08:29:38'), ('2019-06-18 12:49:01', '2019-06-18 13:10:15'), ('2019-09-05 17:17:33', '2019-09-13 15:24:28'), ('2019-09-28 07:05:03', '2019-09-28 08:12:26'), ('2019-09-28 12:55:56', '2019-09-28 13:21:15'), ('2019-09-28 16:47:52', '2019-10-01 16:28:18'), ('2019-10-03 13:11:44', '2019-12-10 17:56:25'), ('2020-05-22 12:08:32', '2020-08-27 17:21:02'); Running the query gives SELECT SUM(diff) AS tot_absent FROM ( SELECT CASE WHEN DATE(datein) > DATE(@prevout) THEN DATEDIFF(datein, @prevout) - 1 ELSE 0 END AS diff , datein , @prevout := dateout AS dateout -- store dateout in @prevout FROM ajoo_login JOIN (SELECT @prevout := NULL) init -- initialize @prevout ) logins; +------------+ | tot_absent | +------------+ | 327 | +------------+ Running just the subquery portion gives mysql> SELECT -> CASE WHEN DATE(datein) > DATE(@prevout) -> THEN DATEDIFF(datein, @prevout) - 1 -> ELSE 0 -> END AS diff -> , datein -> , @prevout := dateout AS dateout -> FROM ajoo_login -> JOIN (SELECT @prevout := NULL) init; +------+---------------------+---------------------+ | diff | datein | dateout | +------+---------------------+---------------------+ | 0 | 2019-03-30 17:05:24 | 2019-03-30 17:09:47 | | 1 | 2019-04-01 15:13:32 | 2019-04-01 15:19:46 | | 2 | 2019-04-04 23:37:21 | 2019-04-04 23:50:51 | | 13 | 2019-04-18 15:28:35 | 2019-04-18 15:33:10 | | 4 | 2019-04-23 16:35:20 | 2019-04-23 16:42:35 | | 0 | 2019-04-24 12:03:07 | 2019-04-24 12:10:28 | | 6 | 2019-05-01 08:05:48 | 2019-05-01 08:20:28 | | 6 | 2019-05-08 18:04:04 | 2019-05-08 18:14:57 | | 0 | 2019-05-09 08:18:15 | 2019-05-09 08:29:38 | | 39 | 2019-06-18 12:49:01 | 2019-06-18 13:10:15 | | 78 | 2019-09-05 17:17:33 | 2019-09-13 15:24:28 | | 14 | 2019-09-28 07:05:03 | 2019-09-28 08:12:26 | | 0 | 2019-09-28 12:55:56 | 2019-09-28 13:21:15 | | 0 | 2019-09-28 16:47:52 | 2019-10-01 16:28:18 | | 1 | 2019-10-03 13:11:44 | 2019-12-10 17:56:25 | | 163 | 2020-05-22 12:08:32 | 2020-08-27 17:21:02 | +------+---------------------+---------------------+
    2 points
  43. Barand
    You are missing the step to prepare the query before binding the parameters. I would strongly advise you use PDO rather than mysqli - much simpler.
    2 points
  44. requinix
    $q = 'SELECT ID FROM table'; That is a SQL query. You have to run that query through your database, receive the results, and then look for each single matching image in the directory for every returned record. You can probably skip looking in the directory, though. It will only tell you if the file exists. So if you already know (or assume) the file exists then you don't need to bother looking.
    2 points
  45. requinix
    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.
    2 points
  46. requinix
    They aren't the same width because you don't have any sort of CSS in there that says anything about a width. It's not like the browser can read your mind about how you want it to appear... Have you tried giving the buttons a width?
    2 points
  47. requinix
    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.
    2 points
  48. Barand
    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 | +------------+--------------+-------------+-------+----------+------------+-----------+-----------------+
    2 points
  49. Barand
    For example, https://www.php.net/manual/en/datetime.createfromformat.php https://www.php.net/manual/en/datetime.format.php
    2 points
  50. Barand
    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>
    2 points
This leaderboard is set to New York/GMT-04:00
×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.