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run code in 150+ php & hhvm versions
Bugs & Features
<?php echo "{$_GET['callback']}('<script>alert(\'XSS\');</script>')";
Output for 5.3.0 - 7.1.0
Notice: Undefined index: callback in /in/KL2Qd on line 2 ('<script>alert(\'XSS\');</script>')
Output for 4.3.0 - 5.2.17
Notice: Undefined index: callback in /in/KL2Qd on line 2 ('<script>alert(\'XSS\');</script>')