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  1. I am attempting to develop a PHP script to record presence at an event for those persons in a mysql table Persons. I am attempting to use checkboxes to indicate who was present. Here is the script as currently written: <?php # Script require ('includes/mysqli_connect.php'); if(isset($_POST['checkbox'])) {$checkbox = $_POST['checkbox']; if(isset($_POST['activate'])?$activate = $_POST["activate"]:$deactivate = $_POST["deactivate"]); $id = "('" . implode( "','", $checkbox ) . "');" ; echo $id; $q="UPDATE Persons SET present = '".(isset($activate)?'Y':'N')."' WHERE id IN $id" ; $r = mys
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