1 $arr1 = array(1, 2, 3, 4, 'color'=>'red');2 $arr2 = array('a', 'b', 'c', 'color'=>'blue');3 print_r(array_merge($arr1, $arr2));//同名索引的值会覆盖4 print_r(array_merge_recursive($arr1, $arr2));//相同的键名 不会覆盖,如果是单个元素会在转为一个一维数组
两个函数作用都是合并数组。参数可以是1到n个数组。(呃,不明白参数是1个数组的时候啥用的。谁知道告诉我。)
输出结果:
第3行:
Array
( [0] => 1 [1] => 2 [2] => 3 [3] => 4 [color] => blue //这一行有区别注意哦 [4] => a [5] => b [6] => c)第4行:
Array
( [0] => 1 [1] => 2 [2] => 3 [3] => 4 [color] => Array //注意这个地方有区别 ( [0] => red [1] => blue )[4] => a
[5] => b [6] => c)