多次foreach循环结果去重

[u014567183]

$a=array(0 =>array([logo] => Array
(
[id] =>1
[sid] => 6
)
1=>array([logo] => Array
(
[id] =>2
[sid] => 6
)
)
使用foreach循环$a，只显示不同的SID；

[一起混吧]

$res = array();
foreach($a as $v){
	if(!isset($res[$v['logo']['sid']])) $res[$v['logo']['sid']] = $v;
}
print_r(array_values($res));

[u014567183]

引用 2 楼 xuzuning 的回复:

$last = 0;
foreach($a as $r) {
  foreach($r as $v) {
    if($last != $v['sid']) echo $v['sid'];
    $last = $v['sid'];
  }
}

刚刚测试了下，表示您给的代码有点缺陷，改良了下： $i =''; foreach($a as $r=>$v){ foreach($v as $k=>$vv){ if(!stristr($i,$vv['sid'])) { $i .= $vv['sid']; echo $vv['sid']; } } }应该没有什么问题了

[u014567183]

引用 4 楼 jordan102 的回复:

$res = array();
foreach($a as $v){
	if(!isset($res[$v['logo']['sid']])) $res[$v['logo']['sid']] = $v;
}
print_r(array_values($res));

可能我问题说的不清楚，不过还是解决了，主要是去掉同一字段的重复的结果。

[一起混吧]

贴出经var_export() 运行后的数组出来

[xuzuning]

$last = 0;
foreach($a as $r) {
  foreach($r as $v) {
    if($last != $v['sid']) echo $v['sid'];
    $last = $v['sid'];
  }
}

[u014567183]

array ( 0 => array ( 'logo' => array ( 'id' => 1, 'sid' => 6, ), ), 1 => array ( 'logo' => array ( 'id' => 2, 'sid' => 6, ), ), )