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多次foreach循环结果去重

WBOY
WBOYOriginal
2016-06-20 12:30:262318browse

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


回复讨论(解决方案)

贴出经var_export() 运行后的数组出来

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

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

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

$last = 0;foreach($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

$res = array();foreach($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。
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