$aa=array(id=>1,time=>5,neirong=>www);
$aa=array(id=>2,time=>55,neirong=>www);
$aa=array(id=>4,time=>555,neirong=>www);
$aa=array(id=>5,time=>555,neirong=>www);
$aaa=array(duibi=>$aa);
$bb=array(id=>1,time=>5);
$bb=array(id=>2,time=>50);
$bb=array(id=>3,time=>555);
$bbb=array(duibi=>$bb);
$aaa和$bbb对比操作 
变成
$cc=array(id=>2,time=>55,neirong=>www);
$cc=array(id=>3,neirong=>delete);
$cc=array(id=>4,time=>555,neirong=>www);
$cc=array(id=>5,time=>555,neirong=>www);
怎么写
先说明下
$aa=array(id=>1,time=>5,neirong=>www);这个数据之所已没有是因为 $aa和$bb时间是一样的
$aa=array(id=>2,time=>55,neirong=>www);
$bb=array(id=>2,time=>50);
那是因为bbdetime比aa得time小所以。。
$cc=array(id=>3,neirong=>delete);对应的$aa不存在所以。。
$cc=array(id=>4,time=>555,neirong=>www);
$cc=array(id=>5,time=>555,neirong=>www);
因为$bb没有对应的id 4和5的数据。。所以
回复讨论(解决方案) 太基础了，回去重练...
太基础了，回去重练...
有本事你写个？ 多维数组拼写起来确实费点时间，试着写了一个，不知道是不是楼主所要的结果
array (size=4)
  0 => 
    array (size=3)
      'id' => string '3' (length=1)
      'time' => string '555' (length=3)
      'neirong' => string 'delete' (length=6)
  1 => 
    array (size=3)
      'id' => string '2' (length=1)
      'time' => string '55' (length=2)
      'neirong' => string 'www' (length=3)
  2 => 
    array (size=3)
      'id' => string '4' (length=1)
      'time' => string '555' (length=3)
      'neirong' => string 'www' (length=3)
  3 => 
    array (size=3)
      'id' => string '5' (length=1)
      'time' => string '555' (length=3)
      'neirong' => string 'www' (length=3)
。。。。。。。。。。
$aa=array(0=>array(id=>1,time=>5,neirong=>www),1=>array(id=>2,time=>55,neirong=>www),2=>array(id=>4,time=>555,neirong=>www),3=>array(id=>5,time=>555,neirong=>www));$bb=array(0=>array(id=>1,time=>5),1=>array(id=>2,time=>50),2=>array(id=>3,time=>555));$cc=array();for($i=0;$i$id,neirong=>delete);}for($i=0;$i array ( [id] => 3 [neirong] => delete ) [1] => array ( [id] => 2 [time] => 55 [neirong] => www ) [2] => array ( [id] => 4 [time] => 555 [neirong] => www ) [3] => array ( [id] => 5 [time] => 555 [neirong] => www ))
$aa = array( array(id=>1,time=>5,neirong=>www), array(id=>2,time=>55,neirong=>www), array(id=>4,time=>555,neirong=>www), array(id=>5,time=>555,neirong=>www),);$bb = array( array(id=>1,time=>5), array(id=>2,time=>50), array(id=>3,time=>555),);foreach($aa as $v) $r[$v['id']] = $v;foreach($bb as $v) { $k = $v['id']; if(! isset($r[$k])) $r[$k] = $v; elseif($r[$k]['time'] array ( [id] => 2 [time] => 55 [neirong] => www ) [3] => array ( [id] => 3 [time] => 555 ) [4] => array ( [id] => 4 [time] => 555 [neirong] => www ) [5] => array ( [id] => 5 [time] => 555 [neirong] => www ))

$aa = array( array(id=>1,time=>5,neirong=>www), array(id=>2,time=>55,neirong=>www), array(id=>4,time=>555,neirong=>www), array(id=>5,time=>555,neirong=>www),);$bb = array( array(id=>1,time=>5), array(id=>2,time=>50), array(id=>3,time=>555),);foreach($aa as $v) $r[$v['id']] = $v;foreach($bb as $v) { $k = $v['id']; if(! isset($r[$k])) $r[$k] = $v; elseif($r[$k]['time'] array ( [id] => 2 [time] => 55 [neirong] => www ) [3] => array ( [id] => 3 [time] => 555 ) [4] => array ( [id] => 4 [time] => 555 [neirong] => www ) [5] => array ( [id] => 5 [time] => 555 [neirong] => www ))

[3] => array
(
[id] => 3
[time] => 555
)
不对哈 没delete
[id] => 3
[neirong] => delete
你原始的数据只有 $bb=array(id=>3,time=>555);
我不能凭空臆造出 neirong=>delete
但你可以，因为规则是你制定的
你自己加上就是了
1,time=>5,neirong=>www);$aa[1]=array(id=>2,time=>55,neirong=>www);$aa[2]=array(id=>4,time=>555,neirong=>www);$aa[3]=array(id=>5,time=>555,neirong=>www);$bb[0]=array(id=>1,time=>5);$bb[1]=array(id=>2,time=>50);$bb[2]=array(id=>3,time=>555);$c = array();$d = array();$e = array();$j = array();foreach($bb as $v){ $e[] = $v['id'];}foreach($aa as $v){ $d[] = $v['id'];}$s = array_diff_assoc($e, $d);$f = array_diff_assoc($d, $e);$g = array_merge($s,$f);foreach($aa as $k=>$v){ foreach($bb as $k1=>$v1){ if($v['id']==$v1['id'] && $v1['time']>$v['time']){ $c[] = array('id'=>$v1['id'],'time'=>$v1['time'],'neirong'=>'delete'); }elseif($v['id']==$v1['id'] && $v1['time']$v['id'],'time'=>$v['time'],'neirong'=>$v['neirong']); } foreach($g as $v2){ if($v['id'] == $v2 && !in_array($v['id'], $j)){ $c[] = array('id'=>$v['id'],'time'=>$v['time'],'neirong'=>$v['neirong']); $j[] = $v['id']; } if($v1['id'] == $v2 && !in_array($v1['id'], $j)){ $c[] = array('id'=>$v1['id'],'time'=>$v1['time'],'neirong'=>'delete'); $j[] = $v1['id']; } } }}var_dump($c);?>
我这个太麻烦了，自己可以改改，不太擅长简化代码
你原始的数据只有 $bb=array(id=>3,time=>555);
我不能凭空臆造出 neirong=>delete
但你可以，因为规则是你制定的
你自己加上就是了
哈哈我刚加上了
我这个太麻烦了，自己可以改改，不太擅长简化代码
刚看版主的代码是最好的 直接遍历$aa跟$bb对比修改
1,time=>5,neirong=>www), array(id=>2,time=>55,neirong=>www), array(id=>4,time=>555,neirong=>www), array(id=>5,time=>555,neirong=>www),); $bb = array( array(id=>1,time=>5), array(id=>2,time=>50), array(id=>3,time=>555),); foreach($aa as $v) $r[$v['id']] = $v;foreach($bb as $v) { $k = $v['id']; if(! isset($r[$k])) { $v['content']='delete'; $r[$k] = $v; } elseif($r[$k]['time'] s