Избегайте самостоятельной эксплуатации PHP
<form name="test" action="<?php echo htmlentities($_SERVER['PHP_SELF']); ?>" method="post">
Dev Arman
<form name="test" action="<?php echo htmlentities($_SERVER['PHP_SELF']); ?>" method="post"><form name="test" action="<?php echo $_SERVER['PHP_SELF']; ?>" method="post">