如何将数组转换为PHP中的SimpleXML对象?
当前回答
只是对上面的函数进行了编辑，当键是数字时，添加前缀“key_”
// initializing or creating array
$student_info = array(your array data);
// creating object of SimpleXMLElement
$xml_student_info = new SimpleXMLElement("<?xml version=\"1.0\"?><student_info></student_info>");
// function call to convert array to xml
array_to_xml($student,$xml_student_info);
//saving generated xml file
$xml_student_info->asXML('file path and name');
function array_to_xml($student_info, &$xml_student_info) {
foreach($student_info as $key => $value) {
if(is_array($value)) {
if(!is_numeric($key)){
$subnode = $xml_student_info->addChild("$key");
array_to_xml($value, $subnode);
}
else{
$subnode = $xml_student_info->addChild("key_$key");
array_to_xml($value, $subnode);
}
}
else {
if(!is_numeric($key)){
$xml_student_info->addChild("$key","$value");
}else{
$xml_student_info->addChild("key_$key","$value");
}
}
}
}
其他回答
只是对上面的函数进行了编辑，当键是数字时，添加前缀“key_”
// initializing or creating array
$student_info = array(your array data);
// creating object of SimpleXMLElement
$xml_student_info = new SimpleXMLElement("<?xml version=\"1.0\"?><student_info></student_info>");
// function call to convert array to xml
array_to_xml($student,$xml_student_info);
//saving generated xml file
$xml_student_info->asXML('file path and name');
function array_to_xml($student_info, &$xml_student_info) {
foreach($student_info as $key => $value) {
if(is_array($value)) {
if(!is_numeric($key)){
$subnode = $xml_student_info->addChild("$key");
array_to_xml($value, $subnode);
}
else{
$subnode = $xml_student_info->addChild("key_$key");
array_to_xml($value, $subnode);
}
}
else {
if(!is_numeric($key)){
$xml_student_info->addChild("$key","$value");
}else{
$xml_student_info->addChild("key_$key","$value");
}
}
}
}
这里提供的答案仅将数组转换为带节点的XML，不能设置属性。我已经编写了一个php函数，允许您将数组转换为php，并为xml中的特定节点设置属性。这里的缺点是您必须以很少约定的特定方式构造数组(仅当您想使用属性时)
下面的示例也允许您用XML设置属性。
来源可以在这里找到: https://github.com/digitickets/lalit/blob/master/src/Array2XML.php
<?php
$books = array(
'@attributes' => array(
'type' => 'fiction'
),
'book' => array(
array(
'@attributes' => array(
'author' => 'George Orwell'
),
'title' => '1984'
),
array(
'@attributes' => array(
'author' => 'Isaac Asimov'
),
'title' => 'Foundation',
'price' => '$15.61'
),
array(
'@attributes' => array(
'author' => 'Robert A Heinlein'
),
'title' => 'Stranger in a Strange Land',
'price' => array(
'@attributes' => array(
'discount' => '10%'
),
'@value' => '$18.00'
)
)
)
);
/* creates
<books type="fiction">
<book author="George Orwell">
<title>1984</title>
</book>
<book author="Isaac Asimov">
<title>Foundation</title>
<price>$15.61</price>
</book>
<book author="Robert A Heinlein">
<title>Stranger in a Strange Land</title>
<price discount="10%">$18.00</price>
</book>
</books>
*/
?>
其他解决方案:
$marray=array(....);
$options = array(
"encoding" => "UTF-8",
"output_type" => "xml",
"version" => "simple",
"escaping" => array("non-ascii, on-print, markup")
);
$xmlres = xmlrpc_encode_request('root', $marray, $options);
print($xmlres);
function array2xml(array $data, SimpleXMLElement $object = null, $oldNodeName = 'item')
{
if (is_null($object)) $object = new SimpleXMLElement('<root/>');
$isNumbered = true;
$idx = 0;
foreach ($data as $key => $x)
if (is_string($key) || ($idx++ != $key + 0))
$isNumbered = false;
foreach ($data as $key => $value)
{
$attribute = preg_match('/^[0-9]/', $key . '') ? $key : null;
$key = (is_string($key) && !preg_match('/^[0-9]/', $key . '')) ? $key : preg_replace('/s$/', '', $oldNodeName);
if (is_array($value))
{
$new_object = $object->addChild($key);
if (!$isNumbered && !is_null($attribute)) $new_object->addAttribute('id', $attribute);
array2xml($value, $new_object, $key);
}
else
{
if (is_bool($value)) $value = $value ? 'true' : 'false';
$node = $object->addChild($key, htmlspecialchars($value));
if (!$isNumbered && !is_null($attribute) && !isset($node->attributes()->id))
$node->addAttribute('id', $attribute);
}
}
return $object;
}
例如，该函数返回一个<obj>…</obj><obj>…</obj>数值索引的XML标记。
输入:
array(
'people' => array(
'dog',
'cat',
'life' => array(
'gum',
'shoe',
),
'fish',
),
array('yeah'),
)
输出:
<root>
<people>
<people>dog</people>
<people>cat</people>
<life>
<life>gum</life>
<life>shoe</life>
</life>
<people>fish</people>
<people>
<people>yeah</people>
</people>
</people>
</root>
这应该能满足所有的共同需求。也许你可以把第三行改成:
$key = is_string($key) ? $key : $oldNodeName . '_' . $key;
或者如果你正在处理以s结尾的复数:
$key = is_string($key) ? $key : preg_replace('/s$/', '', $oldNodeName);
基于这里的所有其他内容，通过前缀@处理数值索引+属性，并可以将xml注入到现有节点:
Code
function simple_xmlify($arr, SimpleXMLElement $root = null, $el = 'x') {
// based on, among others http://stackoverflow.com/a/1397164/1037948
if(!isset($root) || null == $root) $root = new SimpleXMLElement('<' . $el . '/>');
if(is_array($arr)) {
foreach($arr as $k => $v) {
// special: attributes
if(is_string($k) && $k[0] == '@') $root->addAttribute(substr($k, 1),$v);
// normal: append
else simple_xmlify($v, $root->addChild(
// fix 'invalid xml name' by prefixing numeric keys
is_numeric($k) ? 'n' . $k : $k)
);
}
} else {
$root[0] = $arr;
}
return $root;
}//-- fn simple_xmlify
使用
// lazy declaration via "queryparam"
$args = 'hello=4&var[]=first&var[]=second&foo=1234&var[5]=fifth&var[sub][]=sub1&var[sub][]=sub2&var[sub][]=sub3&var[@name]=the-name&var[@attr2]=something-else&var[sub][@x]=4.356&var[sub][@y]=-9.2252';
$q = array();
parse_str($val, $q);
$xml = simple_xmlify($q); // dump $xml, or...
$result = get_formatted_xml($xml); // see below
结果
<?xml version="1.0"?>
<x>
<hello>4</hello>
<var name="the-name" attr2="something-else">
<n0>first</n0>
<n1>second</n1>
<n5>fifth</n5>
<sub x="4.356" y="-9.2252">
<n0>sub1</n0>
<n1>sub2</n1>
<n2>sub3</n2>
</sub>
</var>
<foo>1234</foo>
</x>
好处:格式化XML
function get_formatted_xml(SimpleXMLElement $xml, $domver = null, $preserveWhitespace = true, $formatOutput = true) {
// http://stackoverflow.com/questions/1191167/format-output-of-simplexml-asxml
// create new wrapper, so we can get formatting options
$dom = new DOMDocument($domver);
$dom->preserveWhiteSpace = $preserveWhitespace;
$dom->formatOutput = $formatOutput;
// now import the xml (converted to dom format)
/*
$ix = dom_import_simplexml($xml);
$ix = $dom->importNode($ix, true);
$dom->appendChild($ix);
*/
$dom->loadXML($xml->asXML());
// print
return $dom->saveXML();
}//-- fn get_formatted_xml
