删除PHP中的重叠阵列
-
29-09-2019 - |
题
我已经制作了一个函数(张贴在底部),它将查看一个多维数组,并删除“部分重复”。我的意思是:
Array
(
[0] => Array(5,10)
[1] => Array(5,10,15)
)
第一个数组中的所有元素(5,10)也可以在第二个数组(5,10,15)中使用,因此我们要删除第一个数组,因此我们剩下:
Array(
[1] => Array(5,10,15)
)
我做出的功能尽管非常慢,但我还是向您转向您,希望您的专业知识能够加快我的功能。
非常感谢您!
$groups = array(
array(5,10),
array(5,10,15)
);
$flag = array();
//clone the groups - we now have two identical arrays with all the groups
$groupsInner = $groups;
//iterate first array of groups
foreach($groups as $index=>$group){
$flag[]=$index;
//iterate second array of groups
foreach($groupsInner as $indexInner=>$groupInner){
if(!in_array($indexInner, $flag)){
if(count($group)<count($groupInner)){
$diff = array_diff($group, $groupInner);
$array_to_be_deleted = $index;
$compared_to_array = $indexInner;
}else{
$diff = array_diff($groupInner, $group);
$array_to_be_deleted = $indexInner;
$compared_to_array = $index;
}
//no diff means they are "partly duplicates"
if(count($diff)==0){
unset($groups[$array_to_be_deleted]);
unset($groupsInner[$array_to_be_deleted]);
}
}
}
}
解决方案
array_unique(array_merge($first_array,$second_array))
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