(PHP 5 >= 5.3.0, PHP 7, PHP 8)
SplFixedArray::setSize — Change the size of an array
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.
Throws InvalidArgumentException when size is less than zero.
Raises E_WARNING when size cannot be used as a number.
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