3v4l.org

run code in 300+ PHP versions simultaneously
<?php echo "my first \nPHP script"; echo '\nmy first script'; $a = 1; $b = 2; echo "a={$a};b={$b}\n"; echo 'a='.$a.'b='.b ?> <div>Div</div>
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
my first PHP script\nmy first scripta=1;b=2 Fatal error: Uncaught Error: Undefined constant "b" in /in/AlDsZ:9 Stack trace: #0 {main} thrown in /in/AlDsZ on line 9
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
my first PHP script\nmy first scripta=1;b=2 Warning: Use of undefined constant b - assumed 'b' (this will throw an Error in a future version of PHP) in /in/AlDsZ on line 9 a=1b=b <div>Div</div>
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.33
my first PHP script\nmy first scripta=1;b=2 Notice: Use of undefined constant b - assumed 'b' in /in/AlDsZ on line 9 a=1b=b <div>Div</div>
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 - 5.6.28
my first PHP script\nmy first scripta=1;b=2 Notice: Use of undefined constant b - assumed 'b' in /in/AlDsZ on line 10 a=1b=b <div>Div</div>

preferences:
207.33 ms | 403 KiB | 386 Q