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<?php $array1 = array( array('ur_user_id'=> 1,'ur_fname'=>'PerA','ur_lname'=>'SonA'), array('ur_user_id'=> 2,'ur_fname'=>'PerB','ur_lname'=>'SonB'), array('ur_user_id'=> 3,'ur_fname'=>'PerC','ur_lname'=>'SonC'), ); $array2 = array( array('ur_user_id' => 5,'ur_code' => 'EE','ur_user_role' => 'testE'), array('ur_user_id' => 4,'ur_code' => 'DD','ur_user_role' => 'testD'), array('ur_user_id' => 6,'ur_code' => 'FF','ur_user_role' => 'testF'), array('ur_user_id' => 3,'ur_code' => 'CC','ur_user_role' => 'testC'), array('ur_user_id' => 1,'ur_code' => 'AA','ur_user_role' => 'testA'), array('ur_user_id' => 2,'ur_code' => 'BB','ur_user_role' => 'testB'), ); $keyed = array_column($array2, NULL, 'ur_user_id'); foreach ($array1 as &$row) { if (isset($keyed[$row['ur_user_id']])) { $row += $keyed[$row['ur_user_id']]; } } var_export($array1);

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