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<?php print_r(array_filter(array(0,1,2,3,4,5,6,7,8,9,10), function($num){ return $num % 2 == 0; }));
Output for git.master, git.master_jit, rfc.property-hooks
Array ( [0] => 0 [2] => 2 [4] => 4 [6] => 6 [8] => 8 [10] => 10 )

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