= 5.3.0, PHP 7, PHP 8)SplFixedArray::setSize — Change the size of an array說明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

成功時返回 true， 或者在失敗時返回 false。

錯誤／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";
?>

以上例程會輸出：

5
10