3v4l.org

run code in 300+ PHP versions simultaneously
<!DOCTYPE html> <html> <head> <title></title> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> </head> <body> <form method=post> <input type="text" name="name"> <input type="submit" name="submit"> </form> <?php $name = $_POST['name']; echo "<h3>Hello $name</h3>"; ?> </body> </html>
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
<!DOCTYPE html> <html> <head> <title></title> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> </head> <body> <form method=post> <input type="text" name="name"> <input type="submit" name="submit"> </form> Warning: Undefined array key "name" in /in/NJbCY on line 13 <h3>Hello </h3> </body> </html>
Output for 5.3.7 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.7 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.33
<!DOCTYPE html> <html> <head> <title></title> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> </head> <body> <form method=post> <input type="text" name="name"> <input type="submit" name="submit"> </form> Notice: Undefined index: name in /in/NJbCY on line 13 <h3>Hello </h3> </body> </html>
Output for 7.3.32 - 7.3.33
<!DOCTYPE html> <html> <head> <title></title> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> </head> <body> <form method=post> <input type="text" name="name"> <input type="submit" name="submit"> </form> <h3>Hello </h3> </body> </html>

preferences:
209.18 ms | 402 KiB | 267 Q