Php and XML

[HardCoreMore]

Hi, i have problem with controlling XML file so please send me link if you know the post that my solve my problem.

 

This is the structure of xml that i need.

<content>
    <user id="12">
      <pic>some value</pic>
      <pic>some value</pic>
      <pic>some value</pic>
       </user>
     <user id="28">
      <pic>some value</pic>
      <pic>some value</pic>
      <pic>some value</pic>
      <pic>some value</pic>
     </user>
     <user id="54">
      <pic>some value</pic>
      <pic>some value</pic>
     </user>
        </content>

 

So how can i open this xml and find all children of user tag where id in user tag has value of 54 for example so that i know how many pic tags are there cauz value inside pic is going to be picture name for certain user and i want to limit number of pic tags so that user can only upload 20 pictures.

How can i add new user tag to this xml? How can i add and delete new pic tag inside user tag where id is 28 for example.

I searched the php manual and i found DomDocument functions for editing xml but they are so unclear to me. I really don't know how to use them.

Only i know by far is to open xml  with domxml_open_file()

I hope that you understand what i want to achieve. Any help is welcome.

[blundell]

Most of what you asked is relatively easy :

 

http://www.kirupa.com/web/xml_php_parse_intermediate.htm

 

[HardCoreMore]

Thanks man i found great tutorial about php and xml on phpfreaks. They saved me so much trouble.

[HardCoreMore]

I was reading some tutorials on how to parse and edit xml. I found that best solution is to use simple xml and dom in combination but i still have one problem.

I know how to add an element but i don't know how to add and attribute at the same time when i am adding new element. So i am using this code to add a new element.

$book = simplexml_load_file('book.xml');
$daj = $book->user[0];
$dom = dom_import_simplexml($daj);
$dom->appendChild(new DOMElement("pic", "New Value"));

 

So when i add this new element to the xml how can i add and attribute to that element with some value.

[HardCoreMore]

If i change code to this

$book = simplexml_load_file('book.xml');
$daj = $book->user[0];
$dom = dom_import_simplexml($daj);
$dom->appendChild(new DOMElement("pic", "New Value",[color=red]"attValue"[/color]));

He makes node and makes attribute with value attValue but i can't choose the name of the attribute?

Instead he makes automatically name "xmlns". Why is that happening?

[HardCoreMore]

I am sorry the last post has one mistake. I didn't want to write "attValue". I wanted to make "attValue" to be red but it seams their parser didn't do it.