質問は少し複雑ですので、めまいがする場合は入力しないでください^

$a = array (<br /> 0 => array ( 'id' => '10', 'title' => 'a','type' => '1', 'bian'=>'1'), <br /> 1 => array ( 'id' => '10', 'title' => 'a','type' => '1', 'bian'=>'2'), <br /> 2 => array ( 'id' => '11', 'title' => 'b','type' => '2', 'bian'=>'1'),<br /> 3 => array ( 'id' => '11', 'title' => 'c','type' => '2', 'bian'=>'2'),  <br />);<br />$b = array (<br /> 0 => array ( '10' => '1','11_2' => '1'), <br /> 1 => array ( '10' => '1','11_2' => '1'),<br /> 2 => array ( '11_1' => '1','11_2' => '1'),<br /> 3 => array ( '10' => '2','11_2' => '1'),  <br />);<br />$t = array();<br />foreach($a as $item) {<br />  if($item['type'] == '1') {<br />    $t[$item['id']] = '';<br />  }else $t[$item['id'].'_'.$item['bian']] = '';<br />}<br />$c = array();<br />foreach($b as $v) {<br />  $r = array();<br />  foreach($t as $k=>$n) $r[$k] = @$v[$k];<br />  $c[] = $r;<br />}<br />print_r($c);

Array<br />(<br />    [0] => Array<br />        (<br />            [10] => 1<br />            [11_1] => <br />            [11_2] => 1<br />        )<br /><br />    [1] => Array<br />        (<br />            [10] => 1<br />            [11_1] => <br />            [11_2] => 1<br />        )<br /><br />    [2] => Array<br />        (<br />            [10] => <br />            [11_1] => 1<br />            [11_2] => 1<br />        )<br /><br />    [3] => Array<br />        (<br />            [10] => 2<br />            [11_1] => <br />            [11_2] => 1<br />        )<br /><br />)<br /><br />