= 5.3.0, PHP 7, PHP 8)SplFixedArray::setSize — Change the size of an array說(shuō)明public SplFixedArray::setSize(int $size): bo">

SplFixedArray::setSize

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

SplFixedArray::setSize — Change the size of an array

說(shuō)明

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

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.

參數(shù)

size

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

返回值

成功時(shí)返回 true， 或者在失敗時(shí)返回 false。

錯(cuò)誤／異常

Throws InvalidArgumentException when size is less than zero.

Raises E_WARNING when size cannot be used as a number.

范例

示例 #1 SplFixedArray::setSize() example

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

以上例程會(huì)輸出：

5
10