counter von modxcms

<?php
session_start();

$pathtxt="contatore/counter.txt";   
$visual="img";   
$pathimg="http://www.meinewebseite.de/contatore/img";   

@ $sessione = $_SESSION['session_id'];  

if ($sessione == "sessione"){  
			
			$fp=fopen("$pathtxt","r+") OR DIE ("Die Datei counter.txt konnte nicht geöffnet werden...");  
			flock($fp,2);
			$countxt=fgets($fp,1024);
			flock($fp,3);
			
			//visualizza il counter
					if($visual=='text'){  
					echo"$countxt";} else {  
					$lenght=strlen($countxt) - 1;
					$contimg=array();
					for($i=0;$i < $lenght;$i++){$contimg[$i] = substr($countxt,$i,1); } 
					for ($i = 0;$i < $lenght;$i++){
					   $countimg= "<img src=\"".$pathimg."/".$contimg[$i].".gif\""  
					              ." alt=\"".$contimg[$i]."\" />";  
					
					echo"$countimg";}}  
		} else {
			$_SESSION['session_id']="sessione";  

			$fp=fopen("$pathtxt","r+") OR DIE ("impossibile aprire il file");  
			flock($fp,2);
			$countxt=fgets($fp,1024);
			flock($fp,3);
			
			$countxt++;
			
			$fp=fopen("$pathtxt","w+") OR DIE ("impossibile aprire il file");  
			flock($fp,2);
			fputs($fp,"$countxt");  
			flock($fp,3);
			fclose($fp);
			
			//visualizza il counter
					if($visual=='text'){  
					echo"$countxt";}else{  
					$lenght=strlen($countxt) - 1;
					$contimg=array();
					for($i=0;$i < $lenght;$i++){$contimg[$i] = substr($countxt,$i,1); } 
					for ($i = 0;$i < $lenght;$i++){
					   $countimg= "<img src=\"".$pathimg."/".$contimg[$i].".gif\""  
					              ." alt=\"".$contimg[$i]."\" />";  
					
					echo"$countimg";}}  
				
}
?>