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what is the best way to check if a parameter is set in PHP within a jQuery template?

what is the best way to check a parameter is set in PHP within jQuery template?

I have this code:

var custID = '<?php echo htmlentities( $_GET['custID'] ); ?>';

I need to check that it is set, if it is set then echo that value, if it is not produce an error.

Solution

  • i'd say:

    <?php
 if(isset($_GET['custID']))echo "var custID = '".$_GET['custID']."';";
 else echo "alert('error');";
?>