数组对象去除重复的值-PHP Tutorial-php.cn

数组对象去除重复的值

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Release： 2016-06-23 14:38:32

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我得到一个这样的对象数组，每个数组里面的对象的键要保留，但是post_parent的值相同的，只保留第一个，怎么写函数？？？

回复讨论(解决方案)

$st = array();foreach($ar as $i=>$o) {  if(in_array($o->post_parent, $st)) unset($ar[$i]);  else $st[] = $o->post_parent;}

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$st = array();foreach($ar as $i=>$o) {  if(in_array($o->post_parent, $st)) unset($ar[$i]);  else $st[] = $o->post_parent;}

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唠叨！哈哈，才知道哦.
大神，我不明白你的$ar是哪里来的。麻烦解释下被。
而且这个$o->post_partent是不是这个多维数组里的所有post_parent的值啊？
还有您这种写法，我很是迷糊。。您是不是又简写了！

$st = array();foreach($ar as $i=>$o) {  if(in_array($o->post_parent, $st)) unset($ar[$i]);  else $st[] = $o->post_parent;}

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		$images =& get_children( 'post_type=attachment&post_mime_type=image&numberposts=5&post_parent=true' );		foreach ($images as $k=>$v){			$temp[$k]=$v->post_parent;		}		$temp=array_unique($temp);		$temp=array_filter($temp);		foreach ($temp as $k=>$v){			if(!is_imagetype($v)){				unset($temp[$k]);			}		}

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我是这样写的，跟你的比真是弱爆了！！为了实现首页幻灯的效果，你看看，已经弄好了。
http://www.tantengvip.com/

$st = array();foreach($ar as $i=>$o) {  if(in_array($o->post_parent, $st)) unset($ar[$i]);  else $st[] = $o->post_parent;}

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唠叨！哈哈，才知道哦.
大神，我不明白你的$ar是哪里来的。麻烦解释下被。
而且这个$o->post_partent是不是这个多维数组里的所有post_parent的值啊？
还有您这种写法，我很是迷糊。。您是不是又简写了！

$ar就是我输出的那一段数组对象

楼主的方法显然是想多了，显得太复杂

$arr = array();$comp = array_keys(array_unique(array_column($arr,'post_parent','id')));foreach ($arr as $k=>$v){	if(! in_array($v['id'], $comp)) unset($arr[$k]);}print_r($arr);

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