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<?php $items=[3,7,2,9,2,3,8]; $c = function($a, $b) { return $a <=> $b; }; uasort($items, $c); print_r($a);
Output for git.master, git.master_jit, rfc.property-hooks
Warning: Undefined variable $a in /in/bL6mI on line 8

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