Check if it’s on first. That should get rid of the warning and it’ll ensure that if your code is run on older versions of PHP that magic quotes are indeed off.
Don’t just remove that line of code as suggested by others unless you can be 100% sure that the code will never be run on anything before PHP 5.3.
<?php
// Check if magic_quotes_runtime is active
if(get_magic_quotes_runtime())
{
// Deactivate
set_magic_quotes_runtime(false);
}
?>
get_magic_quotes_runtime
is NOT deprecated in PHP 5.3.
Source: http://us2.php.net/get_magic_quotes_runtime/