If "f " is put at the last so it should be on the top of the stack not at the bottom.
(PECL ds >= 1.0.0)
Ds\Stack::push — Pushes values onto the stack
valuesThe values to push onto the stack.
没有返回值。
Example #1 Ds\Stack::push() example
<?php
$stack = new \Ds\Stack();
$stack->push("a");
$stack->push("b");
$stack->push("c", "d");
$stack->push(...["e", "f"]);
print_r($stack);
?>
以上例程的输出类似于：
Ds\Stack Object
(
[0] => a
[1] => b
[2] => c
[3] => d
[4] => e
[5] => f
)
If "f " is put at the last so it should be on the top of the stack not at the bottom.