SimpleXMLIterator::hasChildren

(PHP 5 >= 5.1.0)

SimpleXMLIterator::hasChildren — Checks whether the current element has sub elements.

说明

bool SimpleXMLIterator::hasChildren ( void )

This method checks whether the current SimpleXMLIterator element has sub-elements.

参数

此函数没有参数。

返回值

TRUE if the current element has sub-elements, otherwise FALSE

范例

Example #1 Check whether the current element has sub-elements


<?php
$xml = <<<XML
<books>
    <book>
        <title>PHP Basics</title>
        <author>Jim Smith</author>
    </book>
    <book>XML basics</book>
</books>
XML;

$xmlIterator = new SimpleXMLIterator( $xml );
for( $xmlIterator->rewind(); $xmlIterator->valid(); $xmlIterator->next() ) {
    if($xmlIterator->hasChildren()) {
        var_dump($xmlIterator->current());
    }
}
?>

以上例程会输出：

object(SimpleXMLIterator)#2 (2) {
  ["title"]=>
  string(10) "PHP Basics"
  ["author"]=>
  string(9) "Jim Smith"
}

PHP手册 - N: Checks whether the current element has sub elements.

用户评论:

grummfy at gmail dot com (12-Feb-2010 09:01)

Hello, just a note for people like me who encounter the problems : <?php foreach($xmlIterator as $x) { if($x->hasChildren()) { //never reach echo 'x : '; var_dump($x->current()); } if($xmlIterator->hasChildren()) { echo 'iterator : '; var_dump($x->current()); //all time null var_dump($xmlIterator->current()); } } ?>