3v4l.org

run code in 300+ PHP versions simultaneously
<!DOCTYPE html> <html> <body> <form method='POST'> <h2>Please input your name:</h2> <input type="text" name="name"> <input type="submit" value="Submit Name"> </form> <?php //Retrieve name from query string and store to a local variable $name = $_POST['name']; echo "<h3> Hello $name </h3>"; ?> <br> </body> </html>
Output for git.master, git.master_jit, rfc.property-hooks
<!DOCTYPE html> <html> <body> <form method='POST'> <h2>Please input your name:</h2> <input type="text" name="name"> <input type="submit" value="Submit Name"> </form> Warning: Undefined array key "name" in /in/8jWt4 on line 11 <h3> Hello </h3> <br> </body> </html>

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