Question sur mon php

Je galère depuis un bout mais sans réponse ...


Warning: Creating default object from empty value in /home/auberget/public_html/publi-print.net/assets/php/config.class.php on line 56
An error occurer and the message can't be sent!

J'ai cette ligne de code m'indiquant une erreur dans mon php.
Le voici la ligne de gras, italic et souligné pour vous aider a vous retrouver!

Merci de votre aide !



<?php
//www.resellscripts.info
error_reporting(E_ALL);
session_start();
function pr($str){
echo '<pre>';
print_r($str);
echo '</pre>';
}
class Config {

public function __constructor($post){

$xml = file('../xml/fields.php');
unset($xml[0]);
$xml = implode("\n" , $xml);
$xml = simplexml_load_string($xml);
$fields = array();
foreach($xml->Fields->field as $field){
$aliasVal = (string)$field->alias;
$name = isset($field['name']);
$regex = isset($field['regex']);
$func = isset($field['func']);
$is = isset($field['is']);
$message = isset($field['message']);

$fields[$aliasVal]['name'] = (string)$field->name;

if(isset($field->func))
$fields[$aliasVal]['func'] = (string)$field->func;

if(isset($field->regex))
$fields[$aliasVal]['regex'] = (string)$field->regex;

if(isset($field->message))
$fields[$aliasVal]['message'] = (string)$field->message;

if(isset($field->is))
$fields[$aliasVal]['is'] = (string)$field->is;

}
$this->fields = $fields;
$this->data = self::clean($post);

$this->_defFields();




$xml = file('../xml/config.php');
unset($xml[0]);
$xml = implode("\n" , $xml);
$xml = simplexml_load_string($xml);


$this->Config->Address = array();
$this->Config->Cc = array();

foreach($xml->Addresses->address as $address){


if(isset($address['on'])){

if($address['on'] == 'subject'){
if($this->subject() == $address['value']){
$this->Config->Address[] = (string)$address;

}

}elseif($address['on'] == 'cc'){
$this->Config->Cc[] = (string)$address;
}
}elseif(!isset($address['on'])){
$this->Config->Address[] = (string)$address;
}
}

$conf = $xml->Config;

$this->Config->smtp['use'] = (string)$conf->smtp->use;
$this->Config->smtp['auth'] = (string)$conf->smtp->auth;
$this->Config->smtp['secure'] = (string)$conf->smtp->secure;
$this->Config->smtp['host'] = (string)$conf->smtp->host;
$this->Config->smtp['username'] = (string)$conf->smtp->username;
$this->Config->smtp['password'] = (string)$conf->smtp->password;
$this->Config->smtp['port'] = (string)$conf->smtp->port;
$this->Config->charset = (string)$conf->charset;

}

/** Contain the result error message **/
public $invalid = array();

/** Contain the result boolean **/
public $warning = array();

public $msg = array('error' => 'An error occurer and the message can\'t be sent!',
'success' => 'Email sent successfully!<br />Thank you for contacting us.'
);

// Fatal error
protected $fatalError = array();

static private function clean($post){
$re = array();
foreach($post as $key => $data){
$re[$key] = htmlspecialchars($data);
}
return $re;
}

private function _defFields(){
$__defaults = array('name' => NULL, 'regex' => NULL,'func' => NULL, 'message' => NULL, 'is' => NULL);
foreach($this->fields as $key => $val){
$this->fields[$key] = array_merge($__defaults, $val);
}
}
}
?>
}
}
}
?>