PHP array_pad（）函数与示例-蒲公英云

PHP array_pad（）函数与示例

PHP array_pad()函数 (PHP array_pad() function)

array_pad() function is used to pad an array to given size with a specified value and returns a new array with a specified value.

array_pad()函数用于将数组填充到具有指定值的给定大小，并返回具有指定值的新数组。

Syntax:

句法：

array_pad(array, size, value);

Here,

这里，

array is an array in which we have to add the elements.

数组是我们必须在其中添加元素的数组。
size is the length/size of the array.

size是数组的长度/大小。
value is the value to be added to pad an array.

value是要填充数组的值。

Examples:

例子：

Input:
    $arr = array(10, 20, 30);
    Function call:
    array_pad($arr, 5, 100);
    Output:
    Array
    (    
        [0] => 10   
        [1] => 20   
        [2] => 30   
        [3] => 100  
        [4] => 100  
    )

PHP code:

PHP代码：

<?php
    $arr = array(10, 20, 30);
    //padding to 5 elements with value 100
    $result = array_pad($arr, 5, 100);
    //printing
    print_r ($result);
    $arr = array("Hello", "Guys");
    //padding to 5 elements with value "Bye!"
    $result = array_pad($arr, 5, "Bye!");
    //printing
    print_r ($result);    
?>

Output

输出量

Array
(    
    [0] => 10   
    [1] => 20   
    [2] => 30   
    [3] => 100  
    [4] => 100  
)    
Array
(    
    [0] => Hello
    [1] => Guys 
    [2] => Bye! 
    [3] => Bye! 
    [4] => Bye! 
)