$arr=array(\'a\',\'b\',\'c\',\'d\',\'e\',\'f\',\'g\');//目标数组bai
$i_arr=array(\'1\',\'2\');//要插入bai的数组
$n=2;//插入的位置
array_splice($arr,$n,0,$i_arr);
print_r($arr);
Array (
[0] => a
[1] => b
[2] => 1
[3] => 2
[4] => c
[5] => d
[6] => e
[7] => f
[8] => g
)
来源：https://zhidao.baidu.com/question/1930394207460712987.html
更多：https://www.php.net/manual/zh/function.array-splice.php