SplFixedArray::setSize
(PHP 5 >= 5.3.0, PHP 7, PHP 8)
SplFixedArray::setSize — Change the size of an array
说明
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.
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
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备份地址:http://www.lvesu.com/blog/php/splfixedarray.setsize.php