3v4l.org

run code in 300+ PHP versions simultaneously
<?php var_dump(array_fill_keys(array_values(range('a', 'z')), []));
Output for 5.5.0 - 5.5.37, 5.6.0 - 5.6.23, 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6
array(26) { ["a"]=> array(0) { } ["b"]=> array(0) { } ["c"]=> array(0) { } ["d"]=> array(0) { } ["e"]=> array(0) { } ["f"]=> array(0) { } ["g"]=> array(0) { } ["h"]=> array(0) { } ["i"]=> array(0) { } ["j"]=> array(0) { } ["k"]=> array(0) { } ["l"]=> array(0) { } ["m"]=> array(0) { } ["n"]=> array(0) { } ["o"]=> array(0) { } ["p"]=> array(0) { } ["q"]=> array(0) { } ["r"]=> array(0) { } ["s"]=> array(0) { } ["t"]=> array(0) { } ["u"]=> array(0) { } ["v"]=> array(0) { } ["w"]=> array(0) { } ["x"]=> array(0) { } ["y"]=> array(0) { } ["z"]=> array(0) { } }
Output for 8.3.5
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 array(26) { ["a"]=> array(0) { } ["b"]=> array(0) { } ["c"]=> array(0) { } ["d"]=> array(0) { } ["e"]=> array(0) { } ["f"]=> array(0) { } ["g"]=> array(0) { } ["h"]=> array(0) { } ["i"]=> array(0) { } ["j"]=> array(0) { } ["k"]=> array(0) { } ["l"]=> array(0) { } ["m"]=> array(0) { } ["n"]=> array(0) { } ["o"]=> array(0) { } ["p"]=> array(0) { } ["q"]=> array(0) { } ["r"]=> array(0) { } ["s"]=> array(0) { } ["t"]=> array(0) { } ["u"]=> array(0) { } ["v"]=> array(0) { } ["w"]=> array(0) { } ["x"]=> array(0) { } ["y"]=> array(0) { } ["z"]=> array(0) { } }

preferences:
321.37 ms | 403 KiB | 231 Q