SimpleXMLElement::hasChildren
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SimpleXMLElement::hasChildren — Checks whether the current element has sub elements
说明
警告
Prior to PHP 8.0, SimpleXMLElement::hasChildren() was only declared on the subclass SimpleXMLIterator.
This method checks whether the current SimpleXMLElement 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
示例
示例 #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;
$xmlElement = new SimpleXMLElement($xml);
for ($xmlElement->rewind(); $xmlElement->valid(); $xmlElement->next()) {
if ($xmlElement->hasChildren()) {
var_dump($xmlElement->current());
}
}
?>以上示例会输出：
object(SimpleXMLElement)#2 (2) {
["title"]=>
string(10) "PHP Basics"
["author"]=>
string(9) "Jim Smith"
}
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