SplFixedArray::setSize

(PHP 5 >= 5.3.0, PHP 7, PHP 8)

SplFixedArray::setSize — Change the size of an array

说明

public SplFixedArray::setSize(int $size): true

Change the size of an array to the new size of size. If size is less than the current array size, any values after the new size will be discarded. If size is greater than the current array size, the array will be padded with null values.

参数

size: The new array size. This should be a value between 0 and PHP_INT_MAX.

返回值

总是返回 true。

错误／异常

Throws ValueError when size is less than zero.

更新日志

版本	说明
8.4.0	SplFixedArray::setSize() now has a tentative return of true.

示例

示例 #1 SplFixedArray::setSize() example

<?php
   $array = new SplFixedArray(5);
   echo $array->getSize()."\n";
   $array->setSize(10);
   echo $array->getSize()."\n";
?>

以上示例会输出：

5
10