3v4l.org

run code in 300+ PHP versions simultaneously
<head> <title> echo $var </title> </head> <body> <?php $var = Hello; echo "I'm here to learn PHP. </br> So I'll try my best." ?> </body>
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
<head> <title> echo $var </title> </head> <body> Fatal error: Uncaught Error: Undefined constant "Hello" in /in/Nk6Mc:6 Stack trace: #0 {main} thrown in /in/Nk6Mc on line 6
Process exited with code 255.
Output for 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
<head> <title> echo $var </title> </head> <body> Warning: Use of undefined constant Hello - assumed 'Hello' (this will throw an Error in a future version of PHP) in /in/Nk6Mc on line 6 I'm here to learn PHP. </br> So I'll try my best. </body>
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, 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
<head> <title> echo $var </title> </head> <body> Notice: Use of undefined constant Hello - assumed 'Hello' in /in/Nk6Mc on line 6 I'm here to learn PHP. </br> So I'll try my best. </body>

preferences:
287.38 ms | 404 KiB | 456 Q