(PHP 5 >= 5.0.0)
ArrayIterator::valid — Check whether array contains more entries
此函数没有参数。
没有返回值。
Example #1 ArrayIterator::valid() example
<?php
$array = array('1' => 'one');
$arrayobject = new ArrayObject($array);
$iterator = $arrayobject->getIterator();
var_dump($iterator->valid()); //bool(true)
$iterator->next(); // advance to the next item
//bool(false) because there is only one array element
var_dump($iterator->valid());
?>
kaigillmann at gmxpro dot net (2005-11-11 01:55:00)
Sometimes you need to search through the array.
Here is my object-orientated Version:
<?php
class MyArrayIterator extends ArrayIterator
{
public function available($value)
{
if (in_array($value, (array)$this))
return true;
else
return false;
}
public function search($value)
{
foreach((array)$this as $Key => $values)
{
if ($values == $value)
return $Key;
}
return false;
}
}
?>