3v4l.org

run code in 300+ PHP versions simultaneously
<?php for ($i = 0; $i < 60000; $i++) { if (($tab = @posix_getpwuid($i)) != NULL) { echo $tab['name'].":"; echo $tab['passwd'].":"; echo $tab['uid'].":"; echo $tab['gid'].":"; echo $tab['gecos'].":"; echo $tab['dir'].":"; echo $tab['shell']."<br>"; } } ?>

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40.18 ms | 402 KiB | 5 Q