1，合并
$array1 = array("color" => "red", 2, 4);
$array2 = array("a", "b", "color" => "green", "shape" => "trapezoid", 4);
$result = array_merge($array1, $array2);
print_r($result);
?>
Array
(
[color] => green
[0] => 2
[1] => 4
[2] => a
[3] => b
[shape] => trapezoid
[4] => 4
)
2，增加
$stack = array("orange", "banana");
array_push($stack, "apple", "raspberry");
print_r($stack);
?>
Array
(
[0] => orange
[1] => banana
[2] => apple
[3] => raspberry
)
3，插入指定位置
$array1 = array('a', 'b', 'c', 'd', 'e');
$array2 = array('x');
array_splice($array1, 3, 0, $array2); // 插入到位置3且删除0个
print_r($array1);
?>
Array
(
[0] => a
[1] => b
[2] => c
[3] => x
[4] => d
[5] => e
)
