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! 
)