ช่วยทีครับ ติดปัญหาเกี่ยวกับ Barcode การเข้ารหัส และ การเขียนไฟล์ fopen

function encoding()
 {
	var req;
		if(window.XMLHttpRequest)
			req=new XMLHttpRequest();
		else if(window.ActiveXObject)
			req=new ActiveXObject("Microsoft.XMLHTTP");
		else
	{
			alert("Browser not support");
			return false;
	}

	var strx=jQuery.now();
	var querystrx="../B1/barcode.php?str="+strx;
	req.open("GET",querystrx,true);
	req.send(null);
 }

require("php-barcode.php");
require("../cms/config/connect.php");
	$dd=date(d);
	$mm=date(m);
	$yy=date(Y);
	if($con){
	$sql="select * from cms_runid";
	$query=mysql_query($sql);
	$result=mysql_fetch_array($query);
	if($result[1]!=$dd){
		$sql="update cms_runid set id='0001', day='$dd' where day='$result[1]'";
	}
	else {
		$nid=++$result[0];
		$nid=str_pad($nid, 4, "0", STR_PAD_LEFT);
		$sql="update cms_runid set id='$nid' where day='$result[1]'";
	}
		$query=mysql_query($sql);	
		$sql="select * from cms_runid";
		$query=mysql_query($sql);
		$result=mysql_fetch_array($query);
	
		$nextid=$result[0];
		$nowdate=$dd.'/'.$mm.'/'.$yy;
		$rid=$yy.$mm.$dd.$nextid;
	}

function getvar($name){
    global $_GET, $_POST;
    if (isset($_GET[$name])) return $_GET[$name];
    else if (isset($_POST[$name])) return $_POST[$name];
    else return false;
}

if (get_magic_quotes_gpc()){
    $code=stripslashes(getvar('code'));
} else {
    $code=getvar('code');
}

if (!$code) $code=$rid;

barcode_print($code,getvar('encoding'),getvar('scale'),getvar('mode'));

  /* paint the bars */
    $width=true;
    for ($i=0;$i<strlen($bars);$i++){
	$val=strtolower($bars[$i]);
	if ($width){
	    $xpos+=$val*$scale/1.1;
	    $width=false;
	    continue;
	}
	if (ereg("[a-z]", $val)){
	    /* tall bar */
	    $val=ord($val)-ord('a')+1;
	    $h=$height2/3;
	} else $h=$height/3;
	imagefilledrectangle($im, $xpos, $space['top'], $xpos+($val*$scale)-1, $h, $col_bar);
	$xpos+=$val*$scale;
	$width=true;
    }
    /* write out the text */
    global $_SERVER;
	$intcode="";
    $chars=explode(" ", $text);
    reset($chars);
    while (list($n, $v)=each($chars)){
	if (trim($v)){
	    $inf=explode(":", $v);
	    $fontsize=$scale*($inf[1]/1.8)/1.4;
	    $fontheight=($total_y-($fontsize/2.7)+30)/2.8;
	    @imagettftext($im, $fontsize, 0, $space['left']+($scale*$inf[0])+5,
	    $fontheight, $col_text, $font_loc, $inf[2]);
		$intcode.=$inf[2];
	}
    }
	$pathweb=$_SERVER[DOCUMENT_ROOT];
	$pathfile=$pathweb."/cms/id.txt";
	$fileid=fopen($pathfile,"w+");
	fwrite($fileid,$intcode);
		
	
    /* output the image */
    $mode=strtolower($mode);
    if ($mode=='jpg' || $mode=='jpeg'){
	header("Content-Type: image/jpeg; name=\"barcode.jpg\"");
	imagejpeg($im);
    } else if ($mode=='gif'){
	header("Content-Type: image/gif; name=\"barcode.gif\"");
	imagegif($im);
    } else {
	header("Content-Type: image/png; name=\"barcode.png\"");
	imagepng($im,"../B1/img/bars.png");
    }

}