How to check if ID in database exists
38,053
Solution 1
$url_id = mysql_real_escape_string($_GET['id']);
$sql = "SELECT id FROM members WHERE id='$url_id'";
$result = mysql_query($sql);
if(mysql_num_rows($result) >0){
//found
}else{
//not found
}
Try something like this :). http://php.net/manual/en/function.mysql-num-rows.php
Solution 2
Please, read the docs for mysql_query
. You have to fetch the result after making the query. That said, you should probably use PDO instead of mysql_*
.
Author by
Kaizokupuffball
Updated on April 17, 2021Comments
-
Kaizokupuffball about 3 years
Why won't this send the user to user.php if the ID don't exist in the table?
<?php include 'db_connect.php'; $id_exists = false; $url_id = mysql_real_escape_string($_GET['id']); $sql = "SELECT id FROM members WHERE id='$url_id'"; $result = mysql_query($sql); if ($result == $url_id) { $id_exists = true; } else if ($result != $url_id) { $id_exists = false; header("location:user.php"); exit(); } ?>