(PHP 5 >= 5.3.0, PHP 7, PHP 8)
SplFixedArray::__construct — Constructs a new fixed array
$size = 0)
Initializes a fixed array with a number of null values equal to size.
size
The size of the fixed array.
This expects a number between 0 and PHP_INT_MAX.
Throws a ValueError when size
is a negative integer.
| 版本 | 说明 |
|---|---|
| 8.0.0 |
Now throws a ValueError if
size is a negative;
previously it threw a InvalidArgumentException.
|
示例 #1 SplFixedArray::__construct() example
<?php
$array = new SplFixedArray(5);
$array[1] = 2;
$array[4] = "foo";
foreach($array as $v) {
var_dump($v);
}
?>
以上例程会输出：
NULL int(2) NULL NULL string(3) "foo"