How to delete a specific rows in mySQL in a page, within a php function
Question
I have a headache on how to delete a specific rows in my database from a function in a page. This is where I am stuck : I know I must use the specific ID from a row, so I put my $id in a while loop, and here I am stuck. Because I don't know how to retrieve that ID from a specific row. IN each row though, there's a "submit" button to delete it. Someone can help me out??
In my other page when I call these 2 functions :
<?php
session_start();
include_once('connect.php');
$object = new User;
if(isset($_POST['supprimer'])) {
$object->supprimer($id);
}
?>
<html>
<head>
<link rel="stylesheet" type="text/css" href="public/css/layout.css">
</head>
<body>
<?php $object->showConcessionnaire(); ?>
</body>
</html>
PHP
public function showConcessionnaire(){
$st = $this->db->prepare("SELECT * FROM `phplogin`.`users` WHERE type='Concessionnaire'");
$st->execute();
echo '<form action="supprConc.php" method="post">
<table class="tableCredit">
<tr class="">
<th>Date</th>
<th>Nom d\'utilisateur</th>
<th>Mot de pass</th>
<th>E-mail</th>
<th>Créé par</th>
<th></th>
<th></th>
</tr>
';
while($r = $st->fetch(PDO::FETCH_ASSOC)){
$id = $r['ID'];
echo '<tr class="lightGray">
<td>'.$r['Date'].'</td>
<td>'.$r['username'].'</td>
<td>'.$r['password'].'</td>
<td>'.$r['E-mail'].'</td>
<td>'.$r['Creer par'].'</td>
<td></td>
<td><input type="submit" name="supprimer" value="X" class="logout"></td>
</tr>';
}
echo '</table></form>';
}
public function supprimer($id){
$st = $this->db->prepare("DELETE FROM `phplogin`.`users` WHERE `users`.`id` = '$id'");
$st->execute();
}
3 answers
solution1
1 ACCPTED 2014-03-25 19:55:30
One solution would be to insert a hidden input containing the ID of the row.
<input type="hidden" name="rowID" value="$id" />
Then when calling your function...
$object->supprimer($_POST['rowID']);
!! Make sure you escape your string to avoid SQL Injection!
solution2
1 2014-03-25 19:57:07
Change this:
<td><input type="submit" name="supprimer" value="X" class="logout"></td>
to this:
<td><input type="submit" name="supprimer" value=".$id." class="logout"></td>
and then change your function call to:
$object = new User;
if(isset($_POST['supprimer'])) {
$id = $_POST['supprimer'];
$object->supprimer($id);
}
This is not entirely secure solution but more like a proof of concept to demonstrate the approach.
solution3
0 2014-03-25 19:54:50
You can add hidden input field with your id:
<input type="hidden" name="id" value="'.$id.'">
of course this is on your echo and you should move form to your <td>
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