3v4l.org

run code in 300+ PHP versions simultaneously
<?php eval(base64_decode(base64_encode('var_dump(system("/usr/bin/which ls"));')));
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
Warning: system(): Unable to fork [/usr/bin/which ls] in /in/JedsF(2) : eval()'d code on line 1 bool(false)
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 - 7.3.33, 7.4.0 - 7.4.33
Warning: system(): Unable to fork [/usr/bin/which ls] in /in/JedsF(2) : eval()'d code on line 1 NULL
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
string(0) ""

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303.11 ms | 402 KiB | 455 Q