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nethnet

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Posts posted by nethnet

    Hello (again), PHPFreaks!

    in Introductions

    Posted

    Life has once again given me the opportunity to return to my passion of coding with PHP, and as such, I have found my way back home to these forums :)

     

    I'm excited to become involved here again, and hopefully I'll run into a lot of familiar faces along the way!

    capturing echo from another page HElp!!

    in PHP Coding Help

    Posted

    There are a few different ways to achieve this, each with their own pros and cons depending on what you want to do with the file.

     

    If you are just looking to grab the OUTPUT of the PHP script, I would recommend using fopen() to open the file, and then readfile() to load the output of the file into a variable.  This, also, assumed that you have allow_url_fopen enabled on your system.

    empty array??

    in PHP Coding Help

    Posted

    As Adam has said, you can only access the values of $row while you are within your loop.. trying to do so outside of that scope will produce null then the array is, at that point, null.  You could try building a second array of just these "place" values that you obtain inside the loop, which will then persist outside of its scope.

    time()

    in PHP Coding Help

    Posted

    The time() function returns the current UNIX timestamp, which is the amount of seconds since the Unix Epoch (January 1st, 1970 0:00:00 GMT).

     

    The date() function formats a date in the way specified.  As you have used, "w" will return the numerical representation of the day of the week.  By default, the date() function uses the current date and time for the return value, so using date("w") and date("w", time()) will return the exact same thing.  If, however, you wanted to know the day of the week exactly 100 days from now, you could use a combination of the two functions to do so:

     

    <?php

$timestamp = time();

$onehundreddays = 60 * 60 * 24 * 100; // The amount of seconds in 100 days

$finaltime = $timestamp + $onehundreddays;

echo "In one hundred days, it will be " . date("l", $finaltime);

?>

     

    As you can see, UNIX timestamps become very useful when you want to manipulate dates or calculate spans of time between two dates.  The second parameter of the date() function is entirely optional, and will default to the current timestamp, so putting the current value of time() in it is redundant and unnecessary.

     

    I hope that helps your understanding of these two functions.

    IF and ORS (||)

    in PHP Coding Help

    Posted

    I'm just going to take a stab in the dark here and say that what you want to do with the !empty() conditionals should use the boolean && instead.  If you used the way you had, your conditional would evaluate to TRUE as long as ANY of those fields were not empty.  It looks to me like a registration script of some kind, so the natural assumption is that you would only want the conditional to be TRUE as long as NONE of the fields were empty, in which case you would use && instead of ||.

     

     

    String extract

    in PHP Coding Help

    Posted

    Could you clarify what exactly you are trying to do?

     

    I mean, are you trying to implement a similar way of passing data in your own URLs like this, and then extract certain bits of it on your pages?  Or are you literally taking a string that is a URL (abc.com) and trying to extract certain bits of information from it?  Sorry if this seems like a stupid question, I'm just not entirely sure which of these you are trying to accomplish.

    Pagination with Alphabet & Gender search

    in PHP Coding Help

    Posted

    You're not passing the letter and gender in your pagination links.  After reading through your code, I've noticed some inconsistencies that look like you've added things and taken things away and it has kind of made the code a bit sloppy.  I've cleaned the code up a bit and fixed the issue with the page links.  Try this:

     

    <?php

include("common.php");

for ($i = ord("A"); $i < ord("Z"); $i++)
echo "<a href=\"alpha2.php?letter=" . chr($i) . "\">" . chr($i) . "</a> ¦ ";

echo "<br>";
echo "<a href=\"?\">Show All</a></p><br /> <form method=\"post\" action=\"?\">
Select Gender :<br> Male:<input type=\"radio\" value=\"male\" name=\"gender\"><br>
Female:<input type=\"radio\" value=\"female\" name=\"gender\"><br>
<input type=\"hidden\" name=\"letter\" value=\"{$_GET['letter']}\" />
<input type=\"submit\" name=\"submit\" value=\"Search\" class=\"submit\" /> </form>";

mysql_connect(host,username,password) or die(mysql_error());
mysql_select_db(db) or die(mysql_error());

$page = (empty($_GET['page'])) ? 1 : $_GET['page'];
$letter = (empty($_GET['letter'])) ? "%" : $_GET['letter'];
$gender = (empty($_GET['gender'])) ? "%male" : $_GET['gender'];

$max_results = 4;
$from = (($page * $max_results) - $max_results);

if(empty($_POST)) {
$query = "SELECT * FROM `contacts` WHERE `fname` LIKE '".$letter."%' ORDER BY `fname` DESC LIMIT $from, $max_results";
} else {
$gender = $_POST['gender'];
$letter = $_POST['letter'];
$query = "SELECT * FROM `contacts` WHERE `gender` LIKE '$gender' AND `fname` LIKE '$letter%' ORDER BY `fname` DESC LIMIT $from, $max_results";
}

$result = mysql_query($query) or die(mysql_error());
$rows = mysql_num_rows($result);

echo "<table border='1'>";
echo "<tr> <th>ID</th><th>Photo</th><th>Name</th><th>Gender</th></tr>";

if ($rows > 0) {
while($row = mysql_fetch_array($result)) {
	echo "<tr><td>"; echo $row['id']; echo "</td><td>";
	echo '<a href="members_gallary.php?id='.$row['id']. '"><img src="rip_pages.php?id=' .$row['id'].'" height="35" width="45"></a>';
	echo "</td><td>";
	echo $row['fname'];
	echo "</td><td>";
	echo $row['gender'];
	echo "</td></tr>";
}
} else {
echo "<tr><td colspan=\"4\">No results found!</td></tr>";
}

echo "</table>";

echo "Total results = " . $rows;

$total_pages = ceil($rows / $max_results);

$letterstr = ($letter == "%") ? "" : "letter=" . $letter;
$genderstr = ($gender == "%male") ? "" : "gender=" . $gender;

echo "<p class=\"center\">Pages: ";

if ($page > 1) {
$prev = ($page - 1);
echo "<a href=\"".$_SERVER['PHP_SELF']."?page=$prev&$letterstr&$genderstr\">«</a> ";
}

for($i = 1; $i <= $total_pages; $i++) { 
if($page == $i) {
	echo "$i ";
} else {
	echo "<a href=\"".$_SERVER['PHP_SELF']."?page=$i&$letterstr&$genderstr\">$i</a> ";
}
}

if($page < $rows){
$next = ($page + 1);
echo "<a href=\"".$_SERVER['PHP_SELF']."?page=$next&$letterstr&$genderstr\">»</a>";
}

echo "</p>";

mysql_close();

?>

     

    I also added a hidden field to your form to help the transition of data from POST (on the first page) to GET (on subsequent pages).

     

    Also, I didn't test this, so there may be a silly parse error somewhere.  Just run it with error reporting turned on in case.

    Pagination with Alphabet & Gender search

    in PHP Coding Help

    Posted

    Going back to your first script posted, I think it would work properly if you fixed these lines:

     

    $sex = $_POST['gender']; 
$query = "SELECT * FROM contacts WHERE gender = '$gender' AND fname LIKE '".$letter."%' ORDER BY fname DESC LIMIT $from, $max_results";

     

    In here you set the gender from the form equal to the $sex variable, but then use the $gender variable to pull it from the database.  You then use the $sex variable later in another query to the database.  For ease of simplification, I would replace all three instances of $sex in your code with $gender.

     

    I didn't test this, and there may be other issues with the original code, but I spotted this and it seemed to be a likely cause of the issue you originally had.

    installed Zend server/framework - php pages blank

    in PHP Coding Help

    Posted

    If you have a page, for example index.php, then just go to that file in your browser.. http://www.yoursite.com/index.php.  If the browser prompts you for download, or if your code is displayed on the page as text, then you don't have PHP enabled.  If you have a PHP script (not a blank PHP file) and when you access it you just see a blank page, chances are there is a parse or other fatal error in the code.  Turn on error reporting to see what the error is.

     

    Add this to the top of your script:

     

    error_reporting(-1);

    Execute certain code at a specific relative time...

    in PHP Coding Help

    Posted

    Cron jobs could accomplish this if it needs to be executed precisely 15 minutes before the counter reaches 0.  Although, if you just need to give the illusion that it is being executed 15 minutes prior, cron jobs would be an unnecessary complication.

     

    I worked on a project once where every player of the game was meant to be given a certain amount of resources every 30 minutes.  Instead of using a cron job that ran exactly every 30 minutes, I just faked it by running a check every time a player loaded their account.  It would check to see how long it has been since they last checked it, and give an appropriate amount of resources depending on the time.  So if 2 hours had passed, it would give, at that moment, 4 times the amount of resources that players were meant to get every 30 minutes.

     

    This way, you give the illusion that it is being updated every 30 minutes, without actually having a cron job running.  This is a very common practice in situations like this.  Obviously, if it was absolutely necessary to do it spot on time, then this method wouldn't work for you.

    Zipping files on demand

    in PHP Coding Help

    Posted

    If you have access to your server root, you can recompile PHP with Zip support.  The ZipArchive class is very useful for creating and managing dynamic Zip files.

     

    ZipArchive on the PHP Manual

     

    I didn't read through your code too closely, so it may be that your method is just as effective, just with a simple issue somewhere in the code, but I've used ZipArchive many times and have never occurred any issues.

     

    Good luck!

    New PHPer

    in Introductions

    Posted

    Welcome to PHPFreaks!

     

    I learned all 4 of those technologies at the same time as well, so it can be done.  Heck, throw in JavaScript for good measure and you'll be set ;)

    passing a variable without using get and post

    in PHP Coding Help

    Posted

    Yes, people use methods like this all the time.

     

    This is accomplished by using the mod_rewrite Apache directive in conjunction with PHP's GET method.  Basically, you tell Apache to interpret URLs differently, so that http://www.example.com/page22 in the browser will actually display http://www.example.com/index.php?param=page22.

     

    Here are some useful documents to read to get this working on your server:

     

    Apache's mod_rewrite documentation

    Article from PHPFreak's blog

    My form isn't working

    in PHP Coding Help

    Posted

    If nothing is being output to the browser, chances are there is an error occurring that is causing the script to die.  Try turning on error reporting to see what exactly the issue is.  Just put this line of code at the top of your page:

     

    error_reporting(-1);

     

    @monkeytooth - I've used GoDaddy to host one of my dedicated servers for about 7 years and I've never encountered any issues with mail() or other PHP problems that extended beyond a malconfiguration on my part.

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