function testLimitIterator()
{
$this->assertEquals(3, $this->_domainObjectCollection->getTotalRecordCount());
$limitIT = new LimitIterator($this->_domainObjectCollection, 1, 2);
$limitIT->rewind();
$this->assertEquals($this->_domObject2, $limitIT->current());
$limitIT->next();
$this->assertEquals($this->_domObject3, $limitIT->current());
}
/**
* Find one file and return.
*
* @param string $path The directory path.
* @param mixed $condition Finding condition, that can be a string, a regex or a callback function.
* Callback example:
* <code>
* function($current, $key, $iterator)
* {
* return @preg_match('^Foo', $current->getFilename()) && ! $iterator->isDot();
* }
* </code>
* @param boolean $recursive True to resursive.
*
* @return \SplFileInfo Finded file info object.
*
* @since 2.0
*/
public static function findOne($path, $condition, $recursive = false)
{
$iterator = new \LimitIterator(static::find($path, $condition, $recursive), 0, 1);
$iterator->rewind();
return $iterator->current();
}
/**
* Find one file and return.
*
* @param mixed $condition Finding condition, that can be a string, a regex or a callback function.
* Callback example:
* <code>
* function($current, $key, $iterator)
* {
* return @preg_match('^Foo', $current->getFilename()) && ! $iterator->isDot();
* }
* </code>
* @param boolean $recursive True to resursive.
*
* @return \SplFileInfo Finded file info object.
*
* @since 1.0
*/
public function find($condition, $recursive = false)
{
$iterator = new \LimitIterator($this->findAll($condition, $recursive), 0, 1);
$iterator->rewind();
return $iterator->current();
}
public function getLatestEpisode()
{
$iterator = new \LimitIterator(new PastEpisodeFilterIterator(new \ArrayIterator($this->buildEpisodesList())), 0, 1);
$iterator->rewind();
return $iterator->current();
}
echo $e->getMessage();
}
echo '----------------------------------- CachingIterator END ---------------------------------', '<br />';
echo '--------------------------------- LimitIterator END-----------------------------------', '<br />';
/**
* LimitIterator 遍历一个Iterator的限定子集
* 在__construct有两个可选参数：offset 和 count
*/
$array = array('apple', 'banana', 'cherry', 'damson', 'elderberry');
$fruits = new ArrayIterator($array);
$offset = 3;
$count = 2;
$limitIt = new LimitIterator($fruits, $offset, $count);
// 如果增加了offset，那么只有两个数，但是rewind时，节点值不会变成0，而是被截取的值offset。
// getPosition 获得当前节点的位置
$limitIt->rewind();
var_dump($limitIt->getPosition());
foreach ($limitIt as $item) {
echo $item, '<br />';
}
echo '--------------------------------- LimitIterator START-----------------------------------', '<br />';
echo '----------------------------------- SplFileObject END ---------------------------------', '<br />';
/**
* SplFileObject 对文本文件进行遍历
*/
$file = '/data/www/test.php';
$fileIt = new SplFileObject($file);
// 遍历获得所有的文本，按行遍历
/*foreach ($fileIt AS $item) {
echo $item, '<br />';
}*/
