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POI can't figure out why one of these PHP scripts is not working
 

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  1. POI can't figure out why one of these PHP scripts is not working
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    <p>I have two scripts doing almost the same things but one of them is not working. I just can't figure where is the problem. Both scripts have almost the same code but the "update message" script is not working. I do not get any php error but the database is not updating.</p> <p>Delete script (working) :</p> <pre><code>&lt;?php function deleterow() { $con=mysqli_connect("localhost","root","root","TP1AlexandreBouletCouture"); if (mysqli_connect_errno()) { echo "Failed to connect to MySQL: " . mysqli_connect_error(); } $delete_id = ($_GET["delete_id"]); $sql="DELETE FROM `table1` WHERE `table1`.`id` = '$delete_id'"; if (!mysqli_query($con,$sql)) { die('Error: ' . mysqli_error($con)); } echo '&lt;p&gt;Message supprimé&lt;/p&gt;'; mysqli_close($con); } if(isset($_GET['delete_id'])) { deleterow($_GET['delete_id']); } ?&gt; &lt;form action="history.php" method="get"&gt; &lt;input type="submit" value="Supprimer"&gt; &lt;input type="hidden" name="delete_id" value='.$row['id'].'&gt; &lt;/form&gt; </code></pre> <p>Update message script (not working) :</p> <pre><code>&lt;?php function updatemyinfos() { $con=mysqli_connect("localhost","root","root","TP1AlexandreBouletCouture"); if (mysqli_connect_errno()) { echo "Failed to connect to MySQL: " . mysqli_connect_error(); } $update_id = ($_GET["update_id"]); $new_message = ($_GET["updatemessage"]); $sql="UPDATE `table1` SET `message` = '$new_message' WHERE `table1`.`id` ='$update_id"; if (!mysqli_query($con,$sql)) { die('Error: ' . mysqli_error($con)); } echo '&lt;p&gt;Message modifié&lt;/p&gt;'; mysqli_close($con); } if(isset($GET['updatemessage'])) { updatemyinfos($GET['updatemessage']); } ?&gt; &lt;form action="history.php" method="get"&gt; &lt;textarea style="resize:none"cols="35"rows="3"name="updatemessage"&gt;'.$row['message'].'&lt;/textarea&gt; &lt;input type="submit" value="Modifier"&gt; &lt;input type="hidden" name="update_id" value='.$row['id'].'&gt; &lt;/form&gt; </code></pre>
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    1. USabouletcouture
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      1. POI can't figure out why one of these PHP scripts is not working
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      1. VTUpMod
    1. COYou are vulnerable to [SQL injection attacks](http://bobby-tables.com).
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      1. POI can't figure out why one of these PHP scripts is not working
      1. USMarc B
    2. COYou should read this: [How can I prevent SQL injection in PHP?](http://stackoverflow.com/questions/60174/how-can-i-prevent-sql-injection-in-php)
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      1. USkunal
    3. CO`$GET` != `$_GET`, but that's the least of your problems: google for SQL injection and how to prevent it, and NEVER use GET requests to modify data (prefetching browsers could prefetch all your DELETE links leaving your database empty).
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      1. POI can't figure out why one of these PHP scripts is not working
      1. USWrikken
 

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