C:/xampp/htdocs/moodle/lib/jabber/XMPP/XMLObj.php

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<?php 
class XMPPHP_XMLObj {
        public $name;
        
        public $ns;
        
        public $attrs = array();
        
        public $subs = array();
        
        public $data = '';

        public function __construct($name, $ns = '', $attrs = array(), $data = '') {
                $this->name = strtolower($name);
                $this->ns   = $ns;
                if(is_array($attrs) && count($attrs)) {
                        foreach($attrs as $key => $value) {
                                $this->attrs[strtolower($key)] = $value;
                        }
                }
                $this->data = $data;
        }

        public function printObj($depth = 0) {
                print str_repeat("\t", $depth) . $this->name . " " . $this->ns . ' ' . $this->data;
                print "\n";
                foreach($this->subs as $sub) {
                        $sub->printObj($depth + 1);
                }
        }

        public function toString($str = '') {
                $str .= "<{$this->name} xmlns='{$this->ns}' ";
                foreach($this->attrs as $key => $value) {
                        if($key != 'xmlns') {
                                $value = htmlspecialchars($value);
                                $str .= "$key='$value' ";
                        }
                }
                $str .= ">";
                foreach($this->subs as $sub) {
                        $str .= $sub->toString();
                }
                $body = htmlspecialchars($this->data);
                $str .= "$body</{$this->name}>";
                return $str;
        }

        public function hasSub($name, $ns = null) {
                foreach($this->subs as $sub) {
                        if(($name == "*" or $sub->name == $name) and ($ns == null or $sub->ns == $ns)) return true;
                }
                return false;
        }

        public function sub($name, $attrs = null, $ns = null) {
                #TODO attrs is ignored
                foreach($this->subs as $sub) {
                        if($sub->name == $name and ($ns == null or $sub->ns == $ns)) {
                                return $sub;
                        }
                }
        }
}