PHP将具有SimpleXMLElement对象的数组转换为XML

Question

I have an array with some SimpleXMLElement Objects inside and now i need to get a well formed XML for Ajax interaction, how can i do?

This is the array:

Array ( 
   [0] => SimpleXMLElement Object (
          [count] => 2 
          [id] => 20 
          [user_id] => 2 
          [title] => Polo RL ) 
   [1] => SimpleXMLElement Object ( 
          [count] => 3 
          [id] => 19 
          [user_id] => 4 
          [title] => tshirt fitch ) 
   [2] => SimpleXMLElement Object ( 
          [count] => 2 
          [id] => 18 
          [user_id] => 2 
          [title] => Polo La Martina ) 
) 

I would get this XML result:

<root>
    <record>
        <count>2</count>
        <id>20</id>
        <user_id>2</user_id>
        <title>Polo RL</title>
    </record>
    <record>
        <count>3</count>
        <id>19</id>
        <user_id>4</user_id>
        <title>tshirt fitch</title>
    </record>
    <record>
        <count>2</count>
        <id>18</id>
        <user_id>2</user_id>
        <title>Polo La Martina</title>
    </record>
</root>

Answer 1

I would use SimpleXMLElement's asXML method to output the XML of each object.So this:

$xml = <<<XML
<record>
    <count>2</count>
    <id>20</id>
    <user_id>2</user_id>
    <title>Polo RL</title>
<record>    
XML;

$xml = new SimpleXMLElement($xml);

echo $xml->asXML();

Will output this:

<record>
    <count>2</count>
    <id>20</id>
    <user_id>2</user_id>
    <title>Polo RL</title>
<record>

So you can simply loop through your array outputing each elements xml to a variable like so:

$fullXml = '<root>';
foreach($arrXml as $xmlElement){
    $fullXml .= str_replace('<?xml version="1.0"?>', '',$xmlElement->asXML());
}
$fullXml .= '</root>';
echo $fullXml ;