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run code in 300+ PHP versions simultaneously
<?php $array = array(1, 'a' => 1, 1, 1, 'c' => 1, 8 => 1, 4 => 1, 19, 3 => 13); function get_array_key($arr, $pos = 0) { foreach ($arr as $key => $value) { $mykey[] = $key; } if (isset($mykey[$pos])) return $mykey[$pos]; } for ($pos = 0; $pos < count($array); $pos++) { echo get_array_key($array, $pos) . ', ' . array_keys($array)[$pos] . "\n"; }
Output for 7.1.0 - 7.1.33, 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 - 8.1.28, 8.2.0 - 8.2.19, 8.3.0 - 8.3.4, 8.3.6 - 8.3.7
0, 0 a, a 1, 1 2, 2 c, c 8, 8 4, 4 9, 9 3, 3
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 0, 0 a, a 1, 1 2, 2 c, c 8, 8 4, 4 9, 9 3, 3
preferences:
131.1 ms | 402 KiB | 214 Q