[RESOLVED] generate barcode image on the fly then use it in html form

tamayo

hi, i need to put a barcode everytime a report is invoked, so, I found a class to generate the barcode, but in the example the image generated is send it by the class as header("Content-type: image/gif"); so i can't add text for example, basically the main lines are these:

	function put_img($image,$file='test.gif'){
		echo "el valor de into es : " . $this->into;
		if($this->into){
			imagegif($image,$this->file);
		} else {
					header("Content-type: image/gif");
					imagegif($image);
			   }
		imagedestroy($image);
	}

to invoke the class these are the lines:

<?php
require_once('cbarra.php'); 
$code_number = '2012010100001011';
//echo $code_number;
new cbarra($code_number,0,'hello.gif'); 
?>

but for example if I want to "echo" the code in letters i don't get the barcode image, in fact, there are displayed a lot of characters.

so, my questions are:

can I put the barcode image generated on the fly in my html form or should I save it first as a file then call it?
to save the barcode in a file, what lines should I change in the class?

regards

tamayo

well, i think this is a better approach, here it is the file that calls the class and display the result:

<?php
require_once('cbarra.php'); 
$code_number = '2012010100001011';
//echo $code_number;

?> 

<html>
<body>
<?php
echo "<p>el codigo es:<br>";
echo $code_number . "<br>";
new cbarra($code_number,0,'hello.gif'); 
echo "</p>";
?>
</body>
</html>

and here it is the class that creates the barcode:

<?php 
class cbarra{
private $file;
private $into;
private $digitArray = array(0=>"00110",1=>"10001",2=>"01001",3=>"11000",4=>"00101",5=>"10100",6=>"01100",7=>"00011",8=>"10010",9=>"01010");
	function __construct($value,$into, $filename) { 
	  $lower = 1 ; $hight = 50;          

	  $this->into = $into;
          $this->file = $filename;
	  for($count1=9;$count1>=0;$count1--){ 
		for($count2=9;$count2>=0;$count2--){   

		  $count = ($count1 * 10) + $count2 ; 
		  $text = "" ; 
		  for($i=1;$i<6;$i++){ 
			$text .=  substr($this->digitArray[$count1],($i-1),1) . substr($this->digitArray[$count2],($i-1),1); 
		  } 
		  $this->digitArray[$count] = $text; 
	   } 
	  } 
		  $img 		= imagecreate(395,73);    

		  $cl_black = imagecolorallocate($img, 0, 0, 0); 
		  $cl_white = imagecolorallocate($img, 255, 255, 255); 

	  imagefilledrectangle($img, 0, 0, $lower*95+1000, $hight+30, $cl_white); 
	  imagefilledrectangle($img, 1,5,1,65,$cl_black); 
	  imagefilledrectangle($img, 2,5,2,65,$cl_white); 
	  imagefilledrectangle($img, 3,5,3,65,$cl_black); 
	  imagefilledrectangle($img, 4,5,4,65,$cl_white); 
$thin = 1 ; 
if(substr_count(strtoupper($_SERVER['SERVER_SOFTWARE']),"WIN32")){
	$wide = 3;
} else {
		$wide = 2.72;
   }
$pos   = 5 ; 
$text = $value ; 
if((strlen($text) % 2) <> 0){ 
	$text = "0" . $text; 
} 
while (strlen($text) > 0) { 
  $i = round($this->JSK_left($text,2)); 
  $text = $this->JSK_right($text,strlen($text)-2); 

  $f = $this->digitArray[$i]; 

  for($i=1;$i<11;$i+=2){ 
	if (substr($f,($i-1),1) == "0") { 
	  $f1 = $thin ; 
	}else{ 
	  $f1 = $wide ; 
	} 
  imagefilledrectangle($img, $pos,5,$pos-1+$f1,65,$cl_black)  ; 
  $pos = $pos + $f1 ;   

  if (substr($f,$i,1) == "0") { 
	  $f2 = $thin ; 
	}else{ 
	  $f2 = $wide ; 
	} 
  imagefilledrectangle($img, $pos,5,$pos-1+$f2,65,$cl_white)  ; 
  $pos = $pos + $f2 ;   
  } 
} 
imagefilledrectangle($img, $pos,5,$pos-1+$wide,65,$cl_black); 
$pos=$pos+$wide; 

imagefilledrectangle($img, $pos,5,$pos-1+$thin,65,$cl_white); 
$pos=$pos+$thin; 


imagefilledrectangle($img, $pos,5,$pos-1+$thin,65,$cl_black); 
$pos=$pos+$thin; 

$this->put_img($img);
} 

function JSK_left($input,$comp){ 
	return substr($input,0,$comp); 
} 

function JSK_right($input,$comp){ 
	return substr($input,strlen($input)-$comp,$comp); 
} 
function put_img($image,$file='test.gif'){
	//echo "el valor de into es : " . $this->into;
	if($this->into){
		imagegif($image,$this->file);
	} else {
				header("Content-type: image/gif");
				imagegif($image);

		   }
	imagedestroy($image);
}
}

?>

I've attached an image of the result, I think that all those chars are my barcode image, so my new question is:
how I can translate all those chars in the image generated?

regards

tamayo

so, the finall solution is like this:

vercbarra.php

<?php
$code_number = '2012010100001033';
?>

<html>
<body>
<p> este es el codigo digitado <?php echo $code_number ?><br> 
y la imagen del codigo de barra es <br>
<?php echo "<img src='cbarra.php?xvalor=".$code_number. "'>" ?>
</body>
</html>

cbarra.php

<?php
$xcodigo=$_GET['xvalor'];

 $digitArray = array(0=>"00110",1=>"10001",2=>"01001",3=>"11000",4=>"00101",5=>"10100",6=>"01100",7=>"00011",8=>"10010",9=>"01010"); 

  $lower = 1 ; $hight = 50;       

  for($count1=9;$count1>=0;$count1--){ 
	for($count2=9;$count2>=0;$count2--){   
	  $count = ($count1 * 10) + $count2 ; 
	  $text = "" ; 

	  for($i=1;$i<6;$i++){ 
		$text .=  substr($digitArray[$count1],($i-1),1) . substr($digitArray[$count2],($i-1),1); 
	  } 
	  $digitArray[$count] = $text; 
   } 
  }

	  $img 		= imagecreate(395,73);    
	  $cl_black = imagecolorallocate($img, 0, 0, 0); 
	  $cl_white = imagecolorallocate($img, 255, 255, 255); 

	  imagefilledrectangle($img, 0, 0, $lower*95+1000, $hight+30, $cl_white); 
	  imagefilledrectangle($img, 1,5,1,65,$cl_black); 
	  imagefilledrectangle($img, 2,5,2,65,$cl_white); 
	  imagefilledrectangle($img, 3,5,3,65,$cl_black); 
	  imagefilledrectangle($img, 4,5,4,65,$cl_white); 
$thin = 1 ; 

if(substr_count(strtoupper($_SERVER['SERVER_SOFTWARE']),"WIN32")){
	$wide = 3;
} else {
		$wide = 2.72;
   }
$pos   = 5 ; 
$text = $xcodigo ; 

if((strlen($text) % 2) <> 0){ 
	$text = "0" . $text; 
}

while (strlen($text) > 0) { 
  $i = round(JSK_left($text,2)); 
  $text = JSK_right($text,strlen($text)-2); 

  $f = $digitArray[$i]; 

  for($i=1;$i<11;$i+=2){ 
	if (substr($f,($i-1),1) == "0") { 
	  $f1 = $thin ; 
	}else{ 
	  $f1 = $wide ; 
	} 
  imagefilledrectangle($img, $pos,5,$pos-1+$f1,65,$cl_black)  ; 
  $pos = $pos + $f1 ;   

  if (substr($f,$i,1) == "0") { 
	  $f2 = $thin ; 
	}else{ 
	  $f2 = $wide ; 
	} 
  imagefilledrectangle($img, $pos,5,$pos-1+$f2,65,$cl_white)  ; 
  $pos = $pos + $f2 ;   
  } 
}

imagefilledrectangle($img, $pos,5,$pos-1+$wide,65,$cl_black); 
$pos=$pos+$wide; 

imagefilledrectangle($img, $pos,5,$pos-1+$thin,65,$cl_white); 
$pos=$pos+$thin; 


imagefilledrectangle($img, $pos,5,$pos-1+$thin,65,$cl_black); 
$pos=$pos+$thin; 

put_img($img);

function JSK_left($input,$comp){ 
	return substr($input,0,$comp); 
} 

function JSK_right($input,$comp){ 
	return substr($input,strlen($input)-$comp,$comp); 
} 
function put_img($image){
	header("Content-type: image/gif");
     imagegif($image);
	imagedestroy($image);
}

see you on the next chapter

blessing

phpedre

I am not quite sure about this. But I cam sharing my favorate barcode site with you. I am using its VB.NET barcode generator in WinForms now. It's very professional in barcode.