PHP | SimpleXMLElement children()函数

先决条件：阅读 XML 基础知识
SimpleXMLElement::children()函数是PHP中的一个内置函数，它返回 SimpleXML 对象中给定节点的子节点。

句法：

SimpleXMLElement SimpleXMLElement::children( $namespace, $is_prefix )

参数：该函数接受上面提到的两个参数，如下所述：

$namespace：它是可选参数。它指定 XML 命名空间。
$is_prefix：布尔参数，可选。如果 $namespace 是前缀，则为 True，如果 $namespace 为命名空间 URL，则为 False。其默认值为 False。

返回值：此函数返回一个 SimpleXMLElement 对象。
注意：此函数在PHP 5.0.1 及更新版本上可用。
下面的程序说明了PHP中的 SimpleXMLElement::children()函数：
程序1：该程序显示子节点的值。

php


    Geeks123
    GeeksforGeeks
    +91-XXXXXXXXXX
    
        Noida, UP, India
    

XML;
 
// Loading string as simple xml object
$xml = simplexml_load_string($user);
 
// Print children node
foreach($xml->children() as $child) {
    echo "Child node: " . $child . "
";
}
 
?>

php


    Geeks123
    GeeksforGeeks
    +91-XXXXXXXXXX
    
        Noida, UP, India
    

XML;
 
// Loading string as simple xml object
$xml = simplexml_load_string($user);
 
// Print children node
foreach($xml->children() as $child) {
    echo "Child node: " . $child->getName()
            . " => " . $child . "
";
}
 
?>

php


    
        Geeks123
    
     
    
        GeeksforGeeks
    
     
    
        +91-XXXXXXXXXX
    
     
    
        Noida, UP, India
    

XML;
 
// Loading string as simple xml object
$xml = simplexml_load_string($user);
 
// Print children attribute
foreach($xml->children() as $child) {
    echo "Child name: " . $child->getName()
            . " =>" . $child . "
";
     
    foreach($child->attributes() as $key => $value)
        echo "      parameter: "
                . $key . " => " . $value . "
";
}
 
?>

输出：

Child node: Geeks123
Child node: GeeksforGeeks
Child node: +91-XXXXXXXXXX
Child node: Noida, UP, India

程序 2：该程序显示标签名称及其值。

PHP


    Geeks123
    GeeksforGeeks
    +91-XXXXXXXXXX
    
        Noida, UP, India
    

XML;
 
// Loading string as simple xml object
$xml = simplexml_load_string($user);
 
// Print children node
foreach($xml->children() as $child) {
    echo "Child node: " . $child->getName()
            . " => " . $child . "
";
}
 
?>

输出：

Child node: username => Geeks123
Child node: name => GeeksforGeeks
Child node: phone => +91-XXXXXXXXXX
Child node: address => Noida, UP, India

程序 3：该程序检索子属性名称及其值。

PHP


    
        Geeks123
    
     
    
        GeeksforGeeks
    
     
    
        +91-XXXXXXXXXX
    
     
    
        Noida, UP, India
    

XML;
 
// Loading string as simple xml object
$xml = simplexml_load_string($user);
 
// Print children attribute
foreach($xml->children() as $child) {
    echo "Child name: " . $child->getName()
            . " =>" . $child . "
";
     
    foreach($child->attributes() as $key => $value)
        echo "      parameter: "
                . $key . " => " . $value . "
";
}
 
?>

输出：

Child name: username => Geeks123 
     parameter: font-color => green
     parameter: font => awesome-fonts
     parameter: font-size => 72px
Child name: name => GeeksforGeeks 
     parameter: font-color => blue
     parameter: font => awesome-fonts
     parameter: font-size => 36px
Child name: phone => +91-XXXXXXXXXX 
     parameter: font-color => blue
     parameter: type => number
     parameter: font => awesome-fonts
     parameter: font-size => 24px
Child name: address => Noida, UP, India 
     parameter: font-color => blue
     parameter: font => awesome-fonts
     parameter: font-size => 24px

参考： https://www. PHP.net/manual/en/simplexmlelement.children。 PHP