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run code in 300+ PHP versions simultaneously
<?php function compose(/* funs to compose */) { $fl = func_get_args(); return function($x) use($fl) { $val = $x; while (null !== $f = array_pop($fl)) { $val = $f($val); }; return $val; }; } $up = function($s) {return strtoupper($s);}; $y = function($s) {return $s.'!';}; $reverse = function($a) {return array_reverse($a);}; $head = function($a) {return array_shift(array_values($a));}; $data = ['jumpkick', 'roundhouse', 'uppercut']; $c = compose($y, $up, $head, $reverse); var_dump($c($data));
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6
Notice: Only variables should be passed by reference in /in/eqaWl on line 17 string(9) "UPPERCUT!"
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 Notice: Only variables should be passed by reference in /in/eqaWl on line 17 string(9) "UPPERCUT!"
Output for 7.3.32 - 7.3.33
string(9) "UPPERCUT!"
Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.28
Strict Standards: Only variables should be passed by reference in /in/eqaWl on line 17 string(9) "UPPERCUT!"
preferences:
166.72 ms | 402 KiB | 228 Q