3v4l.org

run code in 300+ PHP versions simultaneously
<html> <head> <title>Online PHP Script Execution</title> </head> <body> <form method="POST"> <input type="text" name="txt"> <input type="submit" name="sub"> </form> <?php $var=$_POST['txt']; echo "Hello".$var; ?> </body> </html>
Output for git.master, git.master_jit, rfc.property-hooks
<html> <head> <title>Online PHP Script Execution</title> </head> <body> <form method="POST"> <input type="text" name="txt"> <input type="submit" name="sub"> </form> Warning: Undefined array key "txt" in /in/LPMQf on line 11 Hello</body> </html>

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