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<?php $arr = array('aaa'=>'aaa', 'bcbb'=>'bbb'); $k = 'bbb'; if(!array_key_exists($k,$arr)) $arr[$k] = 'ccc'; print_r($arr);
Output for git.master, git.master_jit, rfc.property-hooks
Array ( [aaa] => aaa [bcbb] => bbb [bbb] => ccc )

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