array_intersect:根据值计算多个数组的交集
array array_intersect ( array $array1 , array $array2 [, array $ ... ] )
返回一个数组,该数组的值在每个数组都有
$arr1 = ['a'=>'aaa','b'=>'bbb','c'=>'ccc']; $arr2 = ['bb'=>'ccc','dd'=>'aaa']; $arr = array_intersect($arr1, $arr2); echo '<pre class="brush:php;toolbar:false">'; print_r($arr); result: Array ( [a] => aaa [c] => ccc )
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