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run code in 300+ PHP versions simultaneously
<?php $items = [1,0,'a']; $fn = static function($a,$b){ return $a <=> $b; }; usort($items, $fn); var_dump($items);
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.4, 8.3.6 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
array(3) { [0]=> int(0) [1]=> int(1) [2]=> string(1) "a" }
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(3) { [0]=> int(0) [1]=> int(1) [2]=> string(1) "a" }
Output for 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
array(3) { [0]=> string(1) "a" [1]=> int(0) [2]=> int(1) }

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