(PECL ds >= 1.0.0)
Ds\Stack::__construct — Creates a new instance.
Creates a new instance, using either a traversable
object or an array for the initial values.
valuesA traversable object or an array to use for the initial values.
Example #1 Ds\Stack::__construct() example
<?php
$stack = new \Ds\Stack();
print_r($stack);
$stack = new \Ds\Stack([1, 2, 3]);
print_r($stack);
?>
以上例程的输出类似于：
Ds\Stack Object
(
)
Ds\Stack Object
(
[0] => 3
[1] => 2
[2] => 1
)