3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php echo "<form method='POST' action='" . "<?php echo \$_SERVER['PHP_SELF'];?>'>"; echo "\n"; echo "<form method='POST' action='" . '<?php echo $_SERVER[\'PHP_SELF\'];?>\'>'; echo "\n"; echo '<form method="POST" action="<?php echo $_SERVER[\'PHP_SELF\'];?>">'; echo "\n"; echo '<form method="POST" action="' . htmlentities($_SERVER['PHP_SELF']) . '">';
Output for 5.2.3 - 7.1.0
<form method='POST' action='<?php echo $_SERVER['PHP_SELF'];?>'> <form method='POST' action='<?php echo $_SERVER['PHP_SELF'];?>'> <form method="POST" action="<?php echo $_SERVER['PHP_SELF'];?>"> <form method="POST" action="/in/pM9vc">
Output for 4.3.0 - 5.2.2
<form method='POST' action='<?php echo $_SERVER['PHP_SELF'];?>'> <form method='POST' action='<?php echo $_SERVER['PHP_SELF'];?>'> <form method="POST" action="<?php echo $_SERVER['PHP_SELF'];?>"> <form method="POST" action="">