(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.
没有返回值。
Throws InvalidArgumentException when size is a negative
number.
Raises E_WARNING when size cannot be parsed as a number.
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"