(PHP 5 >= 5.3.0, PHP 7, PHP 8)
SplFixedArray::__construct — Constructs a new fixed array
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);
}
?>以上示例会输出：
NULL int(2) NULL NULL string(3) "foo"