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run code in 300+ PHP versions simultaneously
<?php $a=['a','b','a','c','a','d']; $output=[]; foreach ($a as $v) { $output[$v] = ($output[$v] ?? 0) + 1; } print_r($output);
Output for 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
Array ( [a] => 3 [b] => 1 [c] => 1 [d] => 1 )
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 ( [a] => 3 [b] => 1 [c] => 1 [d] => 1 )
preferences:
212.61 ms | 402 KiB | 178 Q