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<?php $a = array(); $b = array(array('id' => 1), array('id' => 2)); $map = array(); foreach($b as $record) { $map[$record['id']] = $record; } var_dump($map);
Output for git.master, git.master_jit, rfc.property-hooks
array(2) { [1]=> array(1) { ["id"]=> int(1) } [2]=> array(1) { ["id"]=> int(2) } }

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