<?php
 
$request = trim(strtolower($_REQUEST['email']));
 
$emails = array('[email protected]', '[email protected]', '[email protected]', '[email protected]', '[email protected]', '[email protected]');
 
$valid = 'true';
 
foreach($emails as $email) {
 
    if( strtolower($email) == $request )
 
        $valid = 'false';
 
}
 
echo $valid;
 
?>
 
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