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<?php $found = null; $people = array(3,20,2); $criminals = array( 2, 4, 8, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20); foreach($people as $num) { if (in_array($num,$criminals)) { $found[$num] = true; } } var_dump($found);
Output for git.master, git.master_jit, rfc.property-hooks
array(2) { [20]=> bool(true) [2]=> bool(true) }

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