CachingIterator::hasNext

(PHP 5, PHP 7)

CachingIterator::hasNextCheck whether the inner iterator has a valid next element

说明

public void CachingIterator::hasNext ( void )
Warning

本函数还未编写文档,仅有参数列表。

参数

此函数没有参数。

返回值

成功时返回 TRUE, 或者在失败时返回 FALSE

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User Contributed Notes 1 note

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andresdzphp at php dot net
7 years ago
CachingIterator::hasNext Example

<?php
$ait
= new ArrayIterator(array('Value 1', 'Value 2', 'Value 3', 'Value 4'));
$cit = new CachingIterator($ait);

foreach (
$cit as $value) {
    echo
$value;
   
//if has a next value, print a comma
   
if ($cit->hasNext()) {
        echo
', ';
    }
}
?>

Result: Value 1, Value 2, Value 3, Value 4
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