config manager: let PHP parse the config file

Until now, the config manager did read and parse the various PHP config
files itself. This fails for more complex setups like arrays.

I'm not really sure why this was done. This patch replaces the parsing
with a simple include() call. Everything still seems to work.

lib/plugins/config/settings/config.class.php

@@ -139,32 +139,13 @@ if (!class_exists('configuration')) {
     function _read_config($file) {
 
       if (!$file) return array();
+      if (!file_exists($file)) return array();
 
       $config = array();
 
       if ($this->_format == 'php') {
-
-        if(@file_exists($file)){
-            $contents = @php_strip_whitespace($file);
-        }else{
-            $contents = '';
-        }
-        $pattern = '/\$'.$this->_name.'\[[\'"]([^=]+)[\'"]\] ?= ?(.*?);(?=[^;]*(?:\$'.$this->_name.'|$))/s';
-        $matches=array();
-        preg_match_all($pattern,$contents,$matches,PREG_SET_ORDER);
-
-        for ($i=0; $i<count($matches); $i++) {
-
-          // correct issues with the incoming data
-          // FIXME ... for now merge multi-dimensional array indices using ____
-          $key = preg_replace('/.\]\[./',CM_KEYMARKER,$matches[$i][1]);
-
-          // remove quotes from quoted strings & unescape escaped data
-          $value = preg_replace('/^(\'|")(.*)(?<!\\\\)\1$/s','$2',$matches[$i][2]);
-          $value = strtr($value, array('\\\\'=>'\\','\\\''=>'\'','\\"'=>'"'));
-
-          $config[$key] = $value;
-        }
+          include($file);
+          $config = ${$this->_name};
       }
 
       return $config;