SimpleXMLIterator::hasChildren()

(PHP 5, PHP 7)

Checks whether the current element has sub elements

说明

publicSimpleXMLIterator::hasChildren(void): bool

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"
}

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());
  }
}
?>