LimitIterator::__construct
(PHP 5 >= 5.1.0, PHP 7)
LimitIterator::__construct — Construct a LimitIterator
说明
Constructs a new LimitIterator from an iterator with a given starting offset and maximum count.
参数
-
iterator -
The Iterator to limit.
-
offset -
Optional offset of the limit.
-
count -
Optional count of the limit.
返回值
The new LimitIterator.
错误／异常
Throws an OutOfRangeException if the offset is less than 0 or the count is less than -1.
范例
Example #1 LimitIterator::__construct() example
<?php
$ait = new ArrayIterator(array('a', 'b', 'c', 'd', 'e'));
$lit = new LimitIterator($ait, 1, 3);
foreach ($lit as $value) {
echo $value . "\n";
}
?>
以上例程会输出：
b c d
