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(PECL ds >= 1.0.0)
Ds\Map::__construct — Creates a new instance
Creates a new instance, using either a traversable
object or an array for the initial values
.
values
A traversable object or an array to use for the initial values.
示例 #1 Ds\Map::__construct() example
<?php
$map = new \Ds\Map();
var_dump($map);
$map = new \Ds\Map(["a" => 1, "b" => 2, "c" => 3]);
var_dump($map);
?>
以上示例的输出类似于:
object(Ds\Map)#1 (0) { } object(Ds\Map)#2 (3) { [0]=> object(Ds\Pair)#1 (2) { ["key"]=> string(1) "a" ["value"]=> int(1) } [1]=> object(Ds\Pair)#3 (2) { ["key"]=> string(1) "b" ["value"]=> int(2) } [2]=> object(Ds\Pair)#4 (2) { ["key"]=> string(1) "c" ["value"]=> int(3) } }