我有以下课程。似乎可以使用具有一个级别的简单对象,但是当对象具有多个级别(多个数组)并且XML全部搞砸时不能正常工作。任何人都可以帮我改进它,这样它可以用于任何物体吗?
class XMLGenerator
{
function __construct($obj,$root, $element, $fullXML = true) {
$array = $this->object_2_array($obj);
$this->output = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n";
$this->output .= $this->make($array, $root, $element, $fullXML);
}
//convert objects into arrays
function object_2_array($result){
$array = array();
foreach ($result as $key => $value){
if (is_object($value)){
$array[$key]=XMLGenerator::object_2_array($value);
} elseif (is_array($value)){
$array[$key]=XMLGenerator::object_2_array($value);
} else {
$array[$key]=$value;
}
}
return $array;
}
//make XML
function make($array, $root, $element, $fullXML) {
if (is_numeric($root)) {
$xml = "<{$element}>\n";
} else {
$xml = "<{$root}>\n";
}
foreach ($array as $key => $value) {
if (is_array($value)) {
if ($element == 'options'){ //workaround for orders 3 level problem, need to rethink this - LT
$xml .= $this->make($value, $key, $key, $fullXML);
} else {
$xml .= $this->make($value, $element, $key, $fullXML);
}
} else {
//any fields with HTML need wrapping in CDATA
if (($key === 'Description')||( $key === 'productDescription' )){
$value = '<![CDATA['. $value .']]>';
//remove any chars XML doesnt like
} else {
$value = htmlentities($value,ENT_QUOTES, 'UTF-8');
$value = functions::xml_entities($value);
}
//decide on node name
if (is_numeric($key)) {
$xml .= "<{$root}>{$value}</{$root}>\n";
} else {
$xml .= "<{$key}>{$value}</{$key}>\n";
}
}
}
if (is_numeric($root)) {
$xml .= "</{$element}>\n";
} else {
$xml .= "</{$root}>\n";
}
return $xml;
}
//save XML to file
function saveFile($file){
//create DOM to ensure all XML is valid before writing to file
$doc = new DOMDocument();
$doc->loadXML($this->output);
if ($doc->save("$file")){
return TRUE;
} else {
return FALSE;
}
}
}
以下是一个适用于上述类的简单对象。
产品对象( [db_connection:protected] =&gt; 3779074 [prod_id:protected] =&gt; 0 [shopkeeper:protected] =&gt; 0 [fields] =&gt;排列 (
[productDescription] => Test [productName] => Test [UPC] => 123 )
)
以下情况根本无效。
订单对象( [db_connection:protected] =&gt; msSqlConnect对象 ( [con] =&gt; [dbName] =&gt; )
[skID:protected] => 89137 [orderID:protected] => 482325 [order] => Array ( [id] => 482325 [customer] => 491936 [net] => 1565.98 [vat] => 274.05 [billing_address] => Address Object ( [db_connection:protected] => msSqlConnect Object ( [con] => [dbName] => ) [custID:protected] => 491936 [addID:protected] => 156928 [fields] => Array ( [id] => 156928 [surname] => test [forename] => test [add1] => 89 testRoad [add2] => [city] => City [country] => GB [postcode] => POSTCODE ) ) [items] => Array ( [0] => Array ( [id] => 716549 [headerID] => 482325 [productID] => 4084620 [net] => 22.99 [vat] => 4.0233 [qty] => 1 [options] => Array ( [0] => Array ( [id] => [orderDetailsID] => 716549 [optionid] => 763217 [optionCost] => 100 [optionVAT] => 17.5 ) [1] => Array ( [id] => [orderDetailsID] => 716549 [optionid] => 763241 [optionCost] => 10 [optionVAT] => 1.75 ) ) ) [1] => Array ( [id] => 716551 [headerID] => 482325 [productID] => 3779074 [net] => 1400 [vat] => 245 [qty] => 1 [options] => ) ) ) )
非常感谢您的任何帮助。
答案 0 :(得分:6)
多个级别需要递归处理 - 因为您不知道前面的级别数。在进行递归时,您还需要注意打开哪些XML元素。
您所做的是将PHP对象序列化为XML。你不是第一个需要这个的人,PHP附带了一个符合WDDX规范的XML序列化程序,例如wddx_serialize_value
函数:
$object = (object) array('hello' => (object) array('value' => 'world') );
echo wddx_serialize_value($object);
将提供此XML(Demo):
<wddxPacket version='1.0'>
<header/>
<data>
<struct>
<var name='php_class_name'>
<string>stdClass</string>
</var>
<var name='hello'>
<struct>
<var name='php_class_name'>
<string>stdClass</string>
</var>
<var name='value'>
<string>world</string>
</var>
</struct>
</var>
</struct>
</data>
</wddxPacket>
如果需要不同的输出,则需要自己编写序列化。在symfony2(Symfony2 Serializer Component)和Pear(XML_Serializer)中,您可以找到使用XML输出进行序列化的现有PHP代码。