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<?php $arr = [ ['p' => 10], ['p' => 20] ]; usort($arr, function($a,$b){ return $a['p']<$b['p']; }); var_dump($arr);
Output for git.master, git.master_jit, rfc.property-hooks
Deprecated: usort(): Returning bool from comparison function is deprecated, return an integer less than, equal to, or greater than zero in /in/lL6Aj on line 5 array(2) { [0]=> array(1) { ["p"]=> int(20) } [1]=> array(1) { ["p"]=> int(10) } }

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