Php/docs/arrayiterator.valid
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ArrayIterator::valid
(PHP 5, PHP 7)
ArrayIterator::valid — Check whether array contains more entries
说明
public ArrayIterator::valid ( ) : bool
Checks if the array contains any more entries.
参数
此函数没有参数。
返回值
Returns true if the iterator is valid, otherwise false
范例
Example #1 ArrayIterator::valid() example
<?php$array = array('1' => 'one');$arrayobject = new ArrayObject($array);$iterator = $arrayobject->getIterator();var_dump($iterator->valid()); //bool(true)$iterator->next(); // advance to the next item//bool(false) because there is only one array elementvar_dump($iterator->valid());?>
