3v4l.org

run code in 300+ PHP versions simultaneously
<!DOCTYPE> <html> <body> <form method="POST"> <h2>Please enter your name as input : </h2> <input type="text" name="name"/> <input type="submit" name="submit"/> </form> <?php $name=$_POST['name']; echo "HELLO $name"; ?> </body> </html>
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
<!DOCTYPE> <html> <body> <form method="POST"> <h2>Please enter your name as input : </h2> <input type="text" name="name"/> <input type="submit" name="submit"/> </form> Warning: Undefined array key "name" in /in/Ynvv3 on line 10 HELLO </body> </html>
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.33
<!DOCTYPE> <html> <body> <form method="POST"> <h2>Please enter your name as input : </h2> <input type="text" name="name"/> <input type="submit" name="submit"/> </form> Notice: Undefined index: name in /in/Ynvv3 on line 10 HELLO </body> </html>
Output for 7.3.32 - 7.3.33
<!DOCTYPE> <html> <body> <form method="POST"> <h2>Please enter your name as input : </h2> <input type="text" name="name"/> <input type="submit" name="submit"/> </form> HELLO </body> </html>
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
<!DOCTYPE> <html> <body> <form method="POST"> <h2>Please enter your name as input : </h2> <input type="text" name="name"/> <input type="submit" name="submit"/> </form> Notice: Undefined index: name in /in/Ynvv3 on line 10 HELLO </body> </html>

preferences:
248.78 ms | 403 KiB | 456 Q