Deleting from xml

[ozzieing]

Currently my PHP writes out to an XML document via POST in this kind of format.

<key>User1</key> 
<string>George</string>
<key>User2</key>
<string></string> 
<key>User3</key>
<string>Ryan</string> 

 

But I want to remove the users at certain points. So if George is sent to "Remove.php" via POST then "George" is removed so it then looks like:

<key>User1</key> 
<string></string>
<key>User2</key>
<string></string> 
<key>User3</key>
<string>Ryan</string> 

 

Any help with this? It should be fairly basic but I have no idea where to start. To be honest, I'm a bit of a PHP noob but once this is sorted my application wont need any more PHP.

[Maq]

Use simpleXML to loop through the 'string' elements and compare the text to see if it contains the desired name.  If it does, than don't copy it, if it doesn't, than copy.

[ignace]

<?php

class UserManager {
    protected $_simpleXml;
    
    public function __construct($dataSource {
        $this->_simpleXml = simplexml_load_file($dataSource);
        if (!isset($this->_simpleXml->user)) {
            throw new Exception('Incorrect data source given.');
        }
    }
    
    public function addUser($details) {
        $this->_simpleXml->addChild('key', $details['key']);
        $this->_simpleXml->addChild('string', $details['string']);
    }
    
    public function deleteUser($username) {
        for ($i = 0; $i < $this->_simpleXml->user; $i++) {
            if ($this->_simpleXml->user[$i]->key === $username) {
                unset($this->_simpleXml->user[$i]); break;
            }
        }
    }
    
    public function __toString() {
        return $this->_simpleXml->asXml();
    }
}

$userManager = new UserManager('/path/to/file.xml');
$userManager->deleteUser('User1');
print $userManager;

?>