array_diff_key:根据数组键计算多个数组的差集
array_diff_key($array1,array$array2......) 返回一个键在第一个数组但是不在其他数组的新数组 $arr1 = array('a'='aa','b'='bb','c'='cc','d'='dd');$arr2 = array('a'='aaa','b'='bbb','f'='fff');$arr = array_diff_key($arr1,$arr2);echo 'pre';print_r
array_diff_key( $array1 , array $array2 ...... )
返回一个键在第一个数组但是不在其他数组的新数组
$arr1 = array('a'=>'aa','b'=>'bb','c'=>'cc','d'=>'dd');
$arr2 = array('a'=>'aaa','b'=>'bbb','f'=>'fff');
$arr = array_diff_key($arr1,$arr2);
echo '<pre class="brush:php;toolbar:false">';
print_r($arr);
result:
Array
(
[c] => cc
[d] => dd
)
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