(PHP 5 >= 5.3.0, PHP 7, PHP 8)
SplFixedArray::count — Returns the size of the array
此函数没有参数。
Returns the size of the array.
示例 #1 SplFixedArray::count() example
<?php
$array = new SplFixedArray(5);
echo $array->count() . "\n";
echo count($array) . "\n";
?>以上示例会输出：
5 5
注意:
This method is functionally equivalent to SplFixedArray::getSize().
注意:
The count of elements is always equal to the set size because all values are initially initialized with
null.