php 筛选数组,2020-07-24 php 通过数组键值对筛选数组
篩選數(shù)組 $listMenu
Array
(
[0] => Array
(
[type] => 0
[min] => 0
)
[1] => Array
(
[type] => 1
[min] => 1
)
)
目標(biāo)數(shù)組 $res
Array
(
[0] => Array
(
[id] => 183
[type] => 0
[min] => 0
)
[1] => Array
(
[id] => 184
[type] => 0
[min] => 1
)
[2] => Array
(
[id] => 185
[type] => 0
[min] => 2
)
[3] => Array
(
[id] => 186
[type] => 0
[min] => 3
)
[4] => Array
(
[id] => 187
[type] => 1
[min] => 0
)
[5] => Array
(
[id] => 188
[type] => 1
[min] => 1
)
[6] => Array
(
[id] => 189
[type] => 1
[min] => 2
)
[7] => Array
(
[id] => 190
[type] => 1
[min] => 3
)
[8] => Array
(
[id] => 191
[type] => 2
[min] => 0
)
[9] => Array
(
[id] => 192
[type] => 2
[min] => 1
)
[10] => Array
(
[id] => 193
[type] => 2
[min] => 2
)
[11] => Array
(
[id] => 194
[type] => 2
[min] => 3
)
[12] => Array
(
[id] => 195
[type] => 3
[min] => 0
)
[13] => Array
(
[id] => 196
[type] => 3
[min] => 1
)
[14] => Array
(
[id] => 197
[type] => 3
[min] => 2
)
[15] => Array
(
[id] => 198
[type] => 3
[min] => 3
)
)
思路，用array_filter() 函數(shù) 過(guò)濾
array_filter() 函數(shù)使用
function test_odd($var)
{
return($var & 1);
}
$a1=array("a","b",2,3,4);
print_r(array_filter($a1,"test_odd"));
?>
PHP閉包 function() use(){}
閉包的語(yǔ)法很簡(jiǎn)單，需要注意的關(guān)鍵字就只有use，use意思是連接閉包和外界變量。
$a =function()use($b) {
}
代碼
foreach ($listMenu as $key=>$val){
$dataArr[]=array_filter($res,function ($var)use ($val){
if($var['type']==$val['type']&&$var['min']==$val['min']) return true;
});
}
//數(shù)組降維處理
array_walk($dataArr, function(&$v) {$v = current($v);});
print_r($dataArr);
輸出
Array
(
[0] => Array
(
[id] => 183
[type] => 0
[min] => 0
)
[1] => Array
(
[id] => 188
[type] => 1
[min] => 1
)
)
升級(jí)版
/**
*使用數(shù)組篩選
*
*/
static public function getMenuAll(){
$res=[]
//return self::reSort($result);
$item['pid'] = 0;
$result = self::screen($res,$item);
return $result;
}
/**
* 篩選數(shù)組方法
* @param $res
* @param $val
* @return array
*/
static public function screen($res,$val){
return array_filter($res,function ($var) use ($val){
if($var['type']==$val['type']&&$var['min']==$val['min']) return true;
});
}
總結(jié)
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