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- - WHERE `id` = 'a-number-here' problem (https://vborg.vbsupport.ru/showthread.php?t=114856)

error_22

05-05-2006 06:33 PM

WHERE `id` = 'a-number-here' problem

Hi, I have a problem:

PHP Code:


		
			
echo "<form action='send.php' method='POST'>";

echo "<select name='pageid'>";



$sql = "SELECT * FROM `page` ORDER by `id`";

    $result = mysql_query($sql) or die(mysql_error());

    while ($row = mysql_fetch_array($result,MYSQL_ASSOC))

    {

        echo "<option value='{$row['id']}'>{$row['title']}</option>";

    }

    

    echo "</select><input type='submit' value='save'></form>";

in send.php:

PHP Code:


		
			
$id = $_POST['pageid'];

    $sql = "SELECT * FROM `page` WHERE ?id? = '$id'";

    $result = mysql_query($sql) or die(mysql_error());

    while ($row = mysql_fetch_array($result,MYSQL_ASSOC))

    { echo "something goes here"; }

I get this when i hit the save button:

You have an error in your SQL syntax. Check the manual that corresponds to your MySQL server version for the right syntax to use near '?id? = '16'' at line 1

What am i doing wrong?

Paul M

05-05-2006 08:16 PM

What are those funny characters around page and id, try removing them.

error_22

05-05-2006 10:19 PM

nope same thing. Ive had this problem before. It only occurs when the value contains numbers. Am I the only one with this problem? :S

harmor19

05-06-2006 04:42 AM

try removing the space id='$id'

Xorlev

05-08-2006 01:36 AM

You somehow managed to use front ticks. Here's how I'd rewrite it (fix + my style):

$sql = 'SELECT * FROM `page` WHERE `id` = "' . $id . '"';

error_22

05-11-2006 04:08 PM

very very strange....i changed:

PHP Code:


		
			
$id = $_POST['pageid'];

to:

PHP Code:


		
			
$id = $_REQUEST['pageid'];

and now it works. I was wondering, whats the difference between $_REQUEST and $_POST?

Thanks for all the help guys!

Adrian Schneider

05-11-2006 04:13 PM

$_POST is from forms where the method is set to post. $_GET is from the query string (showthread.php?t=5), and $_REQUEST combines the two, as well as a few others.

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