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php中文网手册 发布
(PHP 5 >= 5.1.0)
LimitIterator::__construct — Construct a LimitIterator
$iterator
[, int $offset = 0
[, int $count = -1
]] )
Constructs a new LimitIterator from an
iterator with a given starting
offset and maximum count.
iterator The Iterator to limit.
offset Optional offset of the limit.
count Optional count of the limit.
The new LimitIterator.
Throws an OutOfRangeException
if the offset is less than 0
or the count is less than -1.
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