Returns an intersection total element array (array_intersect_assoc array is worthy of comparison), () function is a key and value binding, together, overlapping part of array_intersect_key () function is the two array key comparison, returns an array of key intersection. 但是实际应用中有一些小问题,比如下一个问题: 例子: 复制代码代码如下所示: < PHP 数组=(红色 红色 2美元=阵列(红色=红2 Num = array_intersect美元(合阵,2美元); print_r(美元数); ; Num = array_intersect_assoc美元(合阵,2美元); print_r(美元数); ; Num = array_intersect_key美元(合阵,2美元); print_r(美元数); >