Ds\Map::clear

(PECL ds >= 1.0.0)

Ds\Map::clear — Removes all values

说明

public Ds\Map::clear ( void ) : void

Removes all values from the map.

参数

此函数没有参数。

返回值

没有返回值。

范例

Example #1 Ds\Map::clear() example

<?php
$map = new \Ds\Map([
    "a" => 1,
    "b" => 2,
    "c" => 3,
]);
print_r($map);

$map->clear();
print_r($map);
?>

以上例程的输出类似于：

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

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

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

)
Ds\Map Object
(
)
相关文章
php collection removes all valuesphp deque removes all values from the dequephp map updates all values by applying a callback function to each valuephp map removes all valuesphp map returns the sum of all values in the mapphp map creates a new map using values from the current instance and another mapphp pair removes all valuesphp priorityqueue removes all valuesphp queue removes all valuesphp sequence returns the result of adding all given values to the sequencephp set removes all valuesphp set returns the result of adding all given values to the setphp set removes all given values from the setphp stack removes all valuesphp vector removes all valuesphp gnupg 函数 removes all keys which were set for decryption beforephp snmp 函数 return all values that are enums with their enum value instead of the raw integerphp solrquery returns all the group.query parameter valuesphp splenum returns all consts possible values as an arrayphp splobjectstorage removes all objects except for those contained in another storage from the current storage
关注编程学问公众号