3v4l.org

run code in 300+ PHP versions simultaneously
<?php echo readdir('.');
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
Fatal error: Uncaught TypeError: readdir(): Argument #1 ($dir_handle) must be of type resource or null, string given in /in/mpCs1:3 Stack trace: #0 /in/mpCs1(3): readdir('.') #1 {main} thrown in /in/mpCs1 on line 3
Process exited with code 255.
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 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
Warning: readdir() expects parameter 1 to be resource, string given in /in/mpCs1 on line 3
Output for 5.2.3 - 5.2.17
Warning: readdir(): supplied argument is not a valid Directory resource in /in/mpCs1 on line 3
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 - 5.2.2
<br /> <b>Warning</b>: readdir(): supplied argument is not a valid Directory resource in <b>/in/mpCs1</b> on line <b>3</b><br />

preferences:
330.71 ms | 403 KiB | 468 Q