如何将数组转换为PHP中的SimpleXML对象?


当前回答

总之……我使用了onokazu的代码(谢谢!),并添加了在XML中重复标记的能力,它还支持属性,希望有人发现它有用!

 <?php

function array_to_xml(array $arr, SimpleXMLElement $xml) {
        foreach ($arr as $k => $v) {

            $attrArr = array();
            $kArray = explode(' ',$k);
            $tag = array_shift($kArray);

            if (count($kArray) > 0) {
                foreach($kArray as $attrValue) {
                    $attrArr[] = explode('=',$attrValue);                   
                }
            }

            if (is_array($v)) {
                if (is_numeric($k)) {
                    array_to_xml($v, $xml);
                } else {
                    $child = $xml->addChild($tag);
                    if (isset($attrArr)) {
                        foreach($attrArr as $attrArrV) {
                            $child->addAttribute($attrArrV[0],$attrArrV[1]);
                        }
                    }                   
                    array_to_xml($v, $child);
                }
            } else {
                $child = $xml->addChild($tag, $v);
                if (isset($attrArr)) {
                    foreach($attrArr as $attrArrV) {
                        $child->addAttribute($attrArrV[0],$attrArrV[1]);
                    }
                }
            }               
        }

        return $xml;
    }

        $test_array = array (
          'bla' => 'blub',
          'foo' => 'bar',
          'another_array' => array (
            array('stack' => 'overflow'),
            array('stack' => 'overflow'),
            array('stack' => 'overflow'),
          ),
          'foo attribute1=value1 attribute2=value2' => 'bar',
        );  

        $xml = array_to_xml($test_array, new SimpleXMLElement('<root/>'))->asXML();

        echo "$xml\n";
        $dom = new DOMDocument;
        $dom->preserveWhiteSpace = FALSE;
        $dom->loadXML($xml);
        $dom->formatOutput = TRUE;
        echo $dom->saveXml();
    ?>

其他回答

您可以使用我一直在研究的XMLParser。

$xml = XMLParser::encode(array(
    'bla' => 'blub',
    'foo' => 'bar',
    'another_array' => array (
        'stack' => 'overflow',
    )
));
// @$xml instanceof SimpleXMLElement
echo $xml->asXML();

会导致:

<?xml version="1.0"?>
<root>
    <bla>blub</bla>
    <foo>bar</foo>
    <another_array>
        <stack>overflow</stack>
    </another_array>
</root>

// Structered array for XML convertion. $data_array = array( array( '#xml_tag' => 'a', '#xml_value' => '', '#tag_attributes' => array( array( 'name' => 'a_attr_name', 'value' => 'a_attr_value', ), ), '#subnode' => array( array( '#xml_tag' => 'aa', '#xml_value' => 'aa_value', '#tag_attributes' => array( array( 'name' => 'aa_attr_name', 'value' => 'aa_attr_value', ), ), '#subnode' => FALSE, ), ), ), array( '#xml_tag' => 'b', '#xml_value' => 'b_value', '#tag_attributes' => FALSE, '#subnode' => FALSE, ), array( '#xml_tag' => 'c', '#xml_value' => 'c_value', '#tag_attributes' => array( array( 'name' => 'c_attr_name', 'value' => 'c_attr_value', ), array( 'name' => 'c_attr_name_1', 'value' => 'c_attr_value_1', ), ), '#subnode' => array( array( '#xml_tag' => 'ca', '#xml_value' => 'ca_value', '#tag_attributes' => FALSE, '#subnode' => array( array( '#xml_tag' => 'caa', '#xml_value' => 'caa_value', '#tag_attributes' => array( array( 'name' => 'caa_attr_name', 'value' => 'caa_attr_value', ), ), '#subnode' => FALSE, ), ), ), ), ), ); // creating object of SimpleXMLElement $xml_object = new SimpleXMLElement('<?xml version=\"1.0\"?><student_info></student_info>'); // function call to convert array to xml array_to_xml($data_array, $xml_object); // saving generated xml file $xml_object->asXML('/tmp/test.xml'); /** * Converts an structured PHP array to XML. * * @param Array $data_array * The array data for converting into XML. * @param Object $xml_object * The SimpleXMLElement Object * * @see https://gist.github.com/drupalista-br/9230016 * */ function array_to_xml($data_array, &$xml_object) { foreach($data_array as $node) { $subnode = $xml_object->addChild($node['#xml_tag'], $node['#xml_value']); if ($node['#tag_attributes']) { foreach ($node['#tag_attributes'] as $tag_attributes) { $subnode->addAttribute($tag_attributes['name'], $tag_attributes['value']); } } if ($node['#subnode']) { array_to_xml($node['#subnode'], $subnode); } } }

如果冗长的xml不成问题,可以使用xmlrpc_encode从数组创建xml。 www.php.net/xmlrpc_encode

注意,如果使用关联键和/或数字键,创建的XML会有所不同

<?php
// /params/param/value/struct/member
// there is a tag "member" for each element
// "member" contains a tag "name". its value is the associative key
$xml1 = xmlrpc_encode(array('a'=>'b','c'=>'d'));
$simplexml1 = simplexml_load_string($xml1);
print_r($xml1);
print_r($simplexml1);

// /params/param/value/array/data
// there is a tag "data" for each element
// "data" doesn't contain the tag "name"
$xml2 = xmlrpc_encode(array('a','b'));
$simplexml2 = simplexml_load_string($xml2);
print_r($xml2);
print_r($simplexml2);
?>

这里有一个函数帮我解决了这个问题:

就像这样叫它

echo arrayToXml("response",$arrayIWantToConvert);
function arrayToXml($thisNodeName,$input){
        if(is_numeric($thisNodeName))
            throw new Exception("cannot parse into xml. remainder :".print_r($input,true));
        if(!(is_array($input) || is_object($input))){
            return "<$thisNodeName>$input</$thisNodeName>";
        }
        else{
            $newNode="<$thisNodeName>";
            foreach($input as $key=>$value){
                if(is_numeric($key))
                    $key=substr($thisNodeName,0,strlen($thisNodeName)-1);
                $newNode.=arrayToXml3($key,$value);
            }
            $newNode.="</$thisNodeName>";
            return $newNode;
        }
    }

总之……我使用了onokazu的代码(谢谢!),并添加了在XML中重复标记的能力,它还支持属性,希望有人发现它有用!

 <?php

function array_to_xml(array $arr, SimpleXMLElement $xml) {
        foreach ($arr as $k => $v) {

            $attrArr = array();
            $kArray = explode(' ',$k);
            $tag = array_shift($kArray);

            if (count($kArray) > 0) {
                foreach($kArray as $attrValue) {
                    $attrArr[] = explode('=',$attrValue);                   
                }
            }

            if (is_array($v)) {
                if (is_numeric($k)) {
                    array_to_xml($v, $xml);
                } else {
                    $child = $xml->addChild($tag);
                    if (isset($attrArr)) {
                        foreach($attrArr as $attrArrV) {
                            $child->addAttribute($attrArrV[0],$attrArrV[1]);
                        }
                    }                   
                    array_to_xml($v, $child);
                }
            } else {
                $child = $xml->addChild($tag, $v);
                if (isset($attrArr)) {
                    foreach($attrArr as $attrArrV) {
                        $child->addAttribute($attrArrV[0],$attrArrV[1]);
                    }
                }
            }               
        }

        return $xml;
    }

        $test_array = array (
          'bla' => 'blub',
          'foo' => 'bar',
          'another_array' => array (
            array('stack' => 'overflow'),
            array('stack' => 'overflow'),
            array('stack' => 'overflow'),
          ),
          'foo attribute1=value1 attribute2=value2' => 'bar',
        );  

        $xml = array_to_xml($test_array, new SimpleXMLElement('<root/>'))->asXML();

        echo "$xml\n";
        $dom = new DOMDocument;
        $dom->preserveWhiteSpace = FALSE;
        $dom->loadXML($xml);
        $dom->formatOutput = TRUE;
        echo $dom->saveXml();
    ?>