PHP Ds\Deque push()用法及代碼示例

Ds \ Deque::push()函數是PHP中的內置函數，用於通過在雙端隊列的末尾附加元素來將元素添加到雙端隊列。

用法:

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

參數：此函數接受單個參數$values，該參數保存要添加到Deque中的元素。

返回值：此函數不返回任何值。

以下示例程序旨在說明PHP中的Ds \ Deque::push()函數：

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); 
  
?>

輸出：

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); 
  
?>

輸出：

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
)

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

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