PHP | Ds\Map merge()函数

Ds\Map::merge()函数是PHP中的一个内置函数，用于返回添加所有给定关联的结果。

句法：

Ds\Map public Ds\Map::merge( $values )

参数：此函数接受单个参数$values ，其中包含可遍历的对象或数组。

返回值：此函数返回给定可遍历对象或数组的所有键与其对应值的关联，并结合当前实例。

下面的程序说明了PHP中的Ds\Map::merge()函数：

方案一：

 12,
    "b" => 15, "c" => 18, "d" => 20]); 
   
// Merge the map element and display it 
print_r($map->merge(["a" => 1, "c" => 2, "f" => 3])); 
   
// Display the set element 
print_r($map) 
  
?> 

输出：

Ds\Map Object
(
    [0] => Ds\Pair Object
        (
            [key] => a
            [value] => 1
        )

    [1] => Ds\Pair Object
        (
            [key] => b
            [value] => 15
        )

    [2] => Ds\Pair Object
        (
            [key] => c
            [value] => 2
        )

    [3] => Ds\Pair Object
        (
            [key] => d
            [value] => 20
        )

    [4] => Ds\Pair Object
        (
            [key] => f
            [value] => 3
        )

)
Ds\Map Object
(
    [0] => Ds\Pair Object
        (
            [key] => a
            [value] => 12
        )

    [1] => Ds\Pair Object
        (
            [key] => b
            [value] => 15
        )

    [2] => Ds\Pair Object
        (
            [key] => c
            [value] => 18
        )

    [3] => Ds\Pair Object
        (
            [key] => d
            [value] => 20
        )

)

方案二：

 "Geeks",
        "2" => "for", "3" => "Geeks"]); 
   
// Merge the map element and display it 
print_r($map->merge(["a" => "Computer",
        "b" => "Science", "c" => "Portal"])); 
  
?> 

输出：

Ds\Map Object
(
    [0] => Ds\Pair Object
        (
            [key] => 1
            [value] => Geeks
        )

    [1] => Ds\Pair Object
        (
            [key] => 2
            [value] => for
        )

    [2] => Ds\Pair Object
        (
            [key] => 3
            [value] => Geeks
        )

    [3] => Ds\Pair Object
        (
            [key] => a
            [value] => Computer
        )

    [4] => Ds\Pair Object
        (
            [key] => b
            [value] => Science
        )

    [5] => Ds\Pair Object
        (
            [key] => c
            [value] => Portal
        )

)

参考： https://www. PHP.net/manual/en/ds-map.merge。 PHP