Porting plugin engine to PHP4

admin/options.php

 											<option value="0" <?php if(!$conf->check_version) echo "selected=\"selected\""; ?>><?php echo __("Deactive")?></option>
 										</select>
 									</li>
-<?php	
+<?php	print_r($trigger);echo "<br>";die("Antes de trigger->call add options panel");
 									$trigger->call('add_options_panel');	
 ?>									
 								</ul>

classes/plugin.class.php

             return $this->exists[$name] = false;
         }		
         
-		function & instance(){
-			static $instance;
-			if( !isset($instance) ) {
-				$instance = new plugin();
+		function instance(){
+			//$instance;			
+			if( !isset($GLOBALS['$instance']) ) {
+				$GLOBALS['$instance'] = new plugin();
 			}
-			return $instance;
+			//print_r($GLOBALS['$instance']);
+			//die();
+			return $GLOBALS['$instance'];
         }
 		
 	}

plugins/kodrs.php

 		}
 	}
 	
-	static function replace_with_geshi($matches) {		
+	function replace_with_geshi($matches) {		
 		$lang = strtolower($matches[1])	;		
 		$code = trim($matches[2]);
 		$geshi = new geshi($code, (isset($lang)) ? $lang : "");