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();
}
<?php
$it = new LimitIterator(new ArrayIterator(array(1, 2, 3, 4)), 1, 2);
foreach ($it as $k => $v) {
echo "{$k}=>{$v}\n";
var_dump($it->getPosition());
}
try {
$it->seek(0);
} catch (OutOfBoundsException $e) {
echo $e->getMessage() . "\n";
}
$it->seek(2);
var_dump($it->current());
try {
$it->seek(3);
} catch (OutOfBoundsException $e) {
echo $e->getMessage() . "\n";
}
$it->next();
var_dump($it->valid());
?>
===DONE===
<?php
exit(0);
}
}
class SeekableNumericArrayIterator extends NumericArrayIterator implements SeekableIterator
{
public function seek($index)
{
if ($index < count($this->a)) {
$this->i = $index;
}
echo __METHOD__ . '(' . $index . ")\n";
}
}
$a = array(1, 2, 3, 4, 5);
foreach (new LimitIterator(new NumericArrayIterator($a), 1, 3) as $v) {
print "{$v}\n";
}
echo "===SEEKABLE===\n";
$a = array(1, 2, 3, 4, 5);
foreach (new LimitIterator(new SeekableNumericArrayIterator($a), 1, 3) as $v) {
print "{$v}\n";
}
echo "===SEEKING===\n";
$a = array(1, 2, 3, 4, 5);
$l = new LimitIterator(new SeekableNumericArrayIterator($a));
for ($i = 1; $i < 4; $i++) {
$l->seek($i);
print $l->current() . "\n";
}
?>
===DONE===
/**
* 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();
}
<?php
$xmlstring = <<<XML
<?xml version = "1.0" encoding="windows-1251"?>
<person>
\t<name>Иван</name>
\t<name>Вася</name>
\t<name>Петя</name>
\t<name>Джон</name>
\t<name>Майк</name>
\t<name>Лена</name>
\t<name>Маша</name>
\t<name>Даша</name>
</person>
XML;
$offset = 3;
$limit = 2;
$it = new LimitIterator(new SimpleXMLIterator($xmlstring), $offset, $limit);
foreach ($it as $r) {
echo $it->key() . ' -- ' . $it->current() . '<br />';
}
function current()
{
return call_user_func($this->options['itemClass'] . "::getByID", parent::current());
}
