HTML 1 click delete from MySQL database - php

Question

how would I create a link that would when clicked erase a record from a MySQL database based on the id of that item? using php if possible.
edit// The link will require authentication in order to view
Thanks

Answer 1

EDIT: I somehow got it in my head that you were looking for an ajax solution, but it seems that I was wrong. Still, I'll leave this here in case it's useful.. #David's solution is the way to go based on what you asked.
This should get you started. The client script uses jQuery:
<a id="item_45" href="#" class=".btnDelete">Delete this</a>
<a id="item_100" href="#" class=".btnDelete">Delete this</a>
<script>
$(document).ready(function() {
$("a.btnDelete").click(function() {
// get the number from the ID after the '_'. Remember, IDs cannot start with numbers
var itemId = this.id.split("_")[1];
// ask the server for some json
// if the 'status' offset is set to '1', the delete was successful
// otherwise, display what's in the 'error' offset
$.post('deleteStuff.php', {id: itemId}, function(json) {
if(json.status == "1") {
alert("delete was successful");
} else {
alert(json.error);
}
}, "json");
return false;
});
});
</script>
<?php
$id = $_POST['itemId'];
// delete corresponding record from database
if($delete_successful) {
$data = array('status' => '1');
} else {
$data = array('error' => 'Could not delete item. Please contact support';
}
echo json_encode($data);
?>

Answer 2

Put the id in the query string
Read the value from $_GET
Construct the SQL query
Send it
… or don't. Having a bot or a pre-fetching cache delete your database is a really bad idea. Use forms and $_POST. Get requests are supposed to be safe.

Answer 3

<?php
if (isset($_GET['delete']) && preg_match('/[0-9]+/', $_GET['delete'])) {
$id = (int) $_GET['delete'];
$sql = "DELETE FROM $table WHERE id = '$id' LIMIT 1";
$res = mysql_query($sql);
$del = mysql_affected_rows();
}
if ($del) {
echo '<p>Rows deleted: <strong>'.$del.'</strong></p>';
}
// loop over your records here, outputting an <a> tag for each record
// this could be an interactive data-grid table or whatever
echo '<p>Delete record #1</p>';
echo '<p>Delete record #2</p>';