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<?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 git.master, git.master_jit, rfc.property-hooks
Notice: Only variables should be passed by reference in /in/eqaWl on line 17 string(9) "UPPERCUT!"

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