How do i delete the records from the table? - php

Question

I am using a form to get the input of username and password to store the value into the database, once the form is submitted i have defined a table to show all the values from the users table, it have 3 fields (id, name, pass) i want to delete each record by it's id .
i am fetching the data from the users table by using the following code:
while($row = mysql_fetch_assoc($result_select)) {
echo "<tr>";
echo "<td>" . $row['id'] . "</td>";
echo "<td>" . $row['name'] . "</td>";
echo "<td>" . $row['pass'] . "</td>";
echo "</tr>"; }
i want to add the delete hyperlink to delete the particular records by id.
i tried using the following code and i couldnt achieve it.
if(mysql_num_rows($result_select) > 0) {
if(isset($_POST['id'])) {
$query_delete = "DELETE FROM users WHERE id =" .$_POST['id'];
$result_delete = mysql_query($query_delete);
}
echo "<table cellpadding=10 border=1>";
while($row = mysql_fetch_assoc($result_select)) {
echo "<tr>";
echo "<td>" . $row['id'] . "</td>";
echo "<td>" . $row['name'] . "</td>";
echo "<td>" . $row['pass'] . "</td>";
echo "<td>Delete</td>";
echo "</tr>";
}
echo "</table>";
}
I am a newbie to programming, i would appreciate if someone explain me in simple words.. thank you :)

Answer 1

First of all put your delete code in your page like this:
if(isset($_POST['submit'])) {
for($i = 0; $i < count($_POST['del']); $i++)
{
// check which records to delete
if (isset($_POST['del'][$i]))
{
$query_delete = "DELETE FROM users WHERE id = " . (int) $_POST['del'][$i];
$result_delete = mysql_query($query_delete) or die(mysql_error());
}
}
echo 'Record Deleted !!' . '<br /><br />';
}
Later put your select code and modify it like this:
echo '<form action="" method="POST">';
while($row = mysql_fetch_assoc($result_select)) {
echo "<tr>";
echo "<td>" . $row['id'] . "</td>";
echo "<td>" . $row['name'] . "</td>";
echo "<td>" . $row['pass'] . "</td>";
echo "<td><input type=\"checkbox\" name=\"del[]\"></td>";
echo "</tr>";
}
echo '<input type="submit" name="submit">';
echo '</form>';

Answer 2

You need to change $_POST to $_GET, so this should work.
if(isset($_GET['id'])) {
$query_delete = "DELETE FROM users WHERE id =" .$_GET['id'];
$result_delete = mysql_query($query_delete);
and also put values of attributes inside double quotes, like this
echo '<td>Delete</td>';