SplFixedArray::__construct()
(PHP 5 >= 5.3.0, PHP 7)
Constructs a new fixed array
说明
Initializes a fixed array with a number of NULL
values equal to $size.
参数
- $size
The size of the fixed array. This expects a number between 0and
PHP_INT_MAX
.
返回值
没有返回值。
错误/异常
Throws InvalidArgumentExceptionwhen $size is a negative number.
Raises E_WARNING
when $size cannot be parsed as a number.
范例
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"