SimpleXML and XML collections - how to get the attribute value as an array key?

I'm just trying to figure out how to cleanly and nicely transform a XML collection into an appropriate object. See, I've got this very simple XML string :

$x = '<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<apiKeys>
    <apiKey application="app1">HfxaoMBJJ9pLe</apiKey>
    <apiKey application="app2">HfxaoMBJJ9pLeClsSHsh</apiKey>
    <apiKey application="app开发者_如何转开发3">HfxaoMBJJ9pLeClsSHshTI9qX</apiKey>
</apiKeys>';

Which I transform using :

$O_xmlElement   = simplexml_load_string ($x);

This is what I get :

SimpleXMLElement Object
(
    [apiKey] => Array
        (
            [0] => HfxaoMBJJ9pLe
            [1] => HfxaoMBJJ9pLeClsSHsh
            [2] => HfxaoMBJJ9pLeClsSHshTI9qX
        )

)

And I'd rather have (I expected !) something like :

SimpleXMLElement Object
(
    [apiKey] => Array
        (
            ['app1'] => HfxaoMBJJ9pLe
            ['app2'] => HfxaoMBJJ9pLeClsSHsh
            ['app3'] => HfxaoMBJJ9pLeClsSHshTI9qX
        )

)

Thank you very much for your help people

SimpleXML won't do what you want automatically. You'll have to build the object yourself:

$O_xmlElement = simplexml_load_string($x);
$myObject = new stdClass();
foreach ($O_xmlElement->apiKey as $apiKey) {
    $key = (string) $apiKey['application'];
    $myObject->${key} = (string) $apiKey;
}

Refer to the basic usage example in the PHP manual for good examples of dealing with child elements and attributes.

When getting attributes from a SimpleXMLElement, remember that each attribute will be a SimpleXMLElement and not a string. You'll want to explicitly cast each attribute to string before using it as an array key or object property name.

Not sure you can do it exactly as you want it, but you can check out php.net's docs here: http://www.php.net/manual/en/simplexmlelement.attributes.php

Basically the attributes can be found inside an object attached to each of the apiKey objects.

You can use the following code:

$xml = simplexml_load_string($x); 
$newArray = array(); 
$count=0;
foreach($xml as $value){ 
    $key= (string)($xml->apiKey[$count++]->attributes()->application);
    $newArray[$key] = $value[0]; 
} 
$newArray = array_map("trim", $newArray); 
print_r($newArray);

This will generate the following output:

Array
(
    [app1] => HfxaoMBJJ9pLe
    [app2] => HfxaoMBJJ9pLeClsSHsh
    [app3] => HfxaoMBJJ9pLeClsSHshTI9qX
)