PHP Delete event ID - php

Question

I have made an Event calender but now I'm facing a problem when the user deletes a event.
Screenshot: http://i.stack.imgur.com/LBLJ9.png
<h2>Date <?php echo "$day"."/"."$month"."/"."$year"."<br>"; ?></h2>
<?php
// event weer gegeven
while ($events = mysql_fetch_array($resultEvents)){
echo "<strong>Event ID:</strong> ".$events['id']."<br>";
echo "Added: ".$events['added']."<br>";
echo "Title: ".$events['titel']."<br>";
echo "Detail: ".$events['content']."<br>";
?>
<form method="POST" action="<?php $_SERVER['PHP_SELF']; ?>">
<input type="submit" name="delete" value="Delete"><br >
<input type="submit" name="edit" value="Edit"><br >
</form>
<?php
if(isset($_POST['delete'])){
$user = $_POST['delete'];
$delet_query = mysql_query("DELETE FROM kalender_contents WHERE `id` = '$events'") or die(mysql_error());
if($delet_query) {
echo "event deleted";
echo $events;
}
}
}
}
}
?>
But the WHEREid= '$events' does not work. How can I specify the ID on the button click.

Answer 1

Try to put its relevant event id into the form like
<form method="POST" action="<?php $_SERVER['PHP_SELF']; ?>">
<input type="hidden" name="event_id" id="event_id" value="<?php echo $events['id'];?>">
<input type="submit" name="delete" value="Delete"><br >
<input type="submit" name="edit" value="Edit"><br >
</form>
And in your submit query use like
$delet_query = mysql_query("DELETE FROM kalender_contents
WHERE `id` = $_POST['event_id']");
Whenever you are submitting the form then its event id will be passed and you need to pass that post variable to your delete query.
Further you need to escape the id to prevent the sql injection with mysql_real_escape_string at your query like
$delet_query = mysql_query("DELETE FROM kalender_contents
WHERE `id` = ".mysql_real_escape_string($_POST['event_id']));

Answer 2

Create a hidden field with value of event id.
<h2>Date <?php echo "$day"."/"."$month"."/"."$year"."<br>"; ?></h2>
<?php
// event weer gegeven
while ($events = mysql_fetch_array($resultEvents)){
echo "<strong>Event ID:</strong> ".$events['id']."<br>";
echo "Added: ".$events['added']."<br>";
echo "Title: ".$events['titel']."<br>";
echo "Detail: ".$events['content']."<br>";
?>
<form method="POST" action="<?php $_SERVER['PHP_SELF']; ?>">
<input type="hidden" name="event_id" value="<?php echo $events['id'];?>">
<input type="submit" name="delete" value="Delete"><br >
<input type="submit" name="edit" value="Edit"><br >
</form>
<?php
if(isset($_POST['delete'])){
$user = $_POST['delete'];
$delet_query = mysql_query("DELETE FROM kalender_contents WHERE `id` = '$events'") or die(mysql_error());
if($delet_query) {
echo "event deleted";
echo $events;
}
}
}
}
}
?>