PHP Ds\Deque push()用法及代码示例

Ds \ Deque::push()函数是PHP中的内置函数，用于通过在双端队列的末尾附加元素来将元素添加到双端队列。

用法:

public Ds\Deque::push( $values ):void

参数：此函数接受单个参数$values，该参数保存要添加到Deque中的元素。

返回值：此函数不返回任何值。

以下示例程序旨在说明PHP中的Ds \ Deque::push()函数：

程序1:

<?php 
  
// Declare a deque 
$deck = new \Ds\Deque([10, 20, 30, 40, 50, 60]); 
  
echo("Elements of Deque\n"); 
  
// Display the Deque elements 
print_r($deck); 
  
echo("\nAdding 70 in the deque\n"); 
  
// Use push() function to add elements 
$deck->push(70); 
  
echo("\nElements of Deque\n"); 
  
// Display the Deque elements 
print_r($deck); 
  
?>

输出：

Elements of Deque
Ds\Deque Object
(
    [0] => 10
    [1] => 20
    [2] => 30
    [3] => 40
    [4] => 50
    [5] => 60
)

Adding 70 in the deque

Elements of Deque
Ds\Deque Object
(
    [0] => 10
    [1] => 20
    [2] => 30
    [3] => 40
    [4] => 50
    [5] => 60
    [6] => 70
)

程序2:

<?php 
  
// Declare a deque 
$deck = new \Ds\Deque([10, 20, 30, 40, 50, 60]); 
  
echo("Elements of Deque\n"); 
  
// Display the Deque elements 
print_r($deck); 
  
echo("\nAdding elements in the deque\n"); 
  
// Use push() function to add elements 
$deck->push(...[70, 80, 90, 100]); 
  
echo("\nElements of Deque\n"); 
  
// Display the Deque elements 
print_r($deck); 
  
?>

输出：

Elements of Deque
Ds\Deque Object
(
    [0] => 10
    [1] => 20
    [2] => 30
    [3] => 40
    [4] => 50
    [5] => 60
)

Adding elements in the deque

Elements of Deque
Ds\Deque Object
(
    [0] => 10
    [1] => 20
    [2] => 30
    [3] => 40
    [4] => 50
    [5] => 60
    [6] => 70
    [7] => 80
    [8] => 90
    [9] => 100
)

参考： http://php.net/manual/en/ds-deque.push.php

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