QR image generator questions...(uploading the image after its created)

cdoggg94 · January 11, 2013

So I have been given some code to generate a QR code image so what ever you want the QR to display and its working fine now.

What I want to do, is take the file it creates and upload it to my /images/ folder, and ALSO take some of the form information and INSERT it into my database.

This is the QR Generator Code:


<?php

   echo "<h1>PHP QR Code</h1><hr/>";

   //set it to writable location, a place for temp generated PNG files
   $PNG_TEMP_DIR = dirname(__FILE__).DIRECTORY_SEPARATOR.'temp'.DIRECTORY_SEPARATOR;

   //html PNG location prefix
   $PNG_WEB_DIR = 'temp/';


   include "qrlib.php";    

   //ofcourse we need rights to create temp dir
   if (!file_exists($PNG_TEMP_DIR))
       mkdir($PNG_TEMP_DIR);


   $filename = $PNG_TEMP_DIR.'test.png';

   //processing form input
   //remember to sanitize user input in real-life solution !!!
   $errorCorrectionLevel = 'L';
   if (isset($_REQUEST['level']) && in_array($_REQUEST['level'], array('L','M','Q','H')))
       $errorCorrectionLevel = $_REQUEST['level'];    


   $matrixPointSize = 4;
   if (isset($_REQUEST['size']))
       $matrixPointSize = min(max((int)$_REQUEST['size'], 1), 10);



   if (isset($_REQUEST['data'])) { 

       //it's very important!
       if (trim($_REQUEST['data']) == '')
           die('data cannot be empty! <a href="?">back</a>');

       // user data
       $filename = $PNG_TEMP_DIR.'test'.md5($_REQUEST['data'].'|'.$errorCorrectionLevel.'|'.$matrixPointSize).'.png';
       QRcode::png($_REQUEST['data'], $filename, $errorCorrectionLevel, $matrixPointSize, 2);    

   } else {    

       //default data
       echo 'You can provide data in GET parameter: <a href="?data=like_that">like that</a><hr/>';    
       QRcode::png('PHP QR Code ', $filename, $errorCorrectionLevel, $matrixPointSize, 2);    

   }    

   //display generated file
   echo '<img src="'.$PNG_WEB_DIR.basename($filename).'" /><hr/>';  





   //config form
   echo '<form action="index.php" method="post">
<table border="0">
<tr>
<td>Name: </td><td><input type="text" name="name" id="name"/></td>
</tr>
<tr>
<td>Content: </td><td><textarea name="content" cols="45" rows="15"></textarea></td>
</tr>
<tr>
   <td>Data: </td><td><input name="data" value="'.(isset($_REQUEST['data'])?htmlspecialchars($_REQUEST['data']):'PHP QR Code ').'" /></td>
</tr>
<tr>
   <td>ECC: </td><td><select name="level">
           <option value="L"'.(($errorCorrectionLevel=='L')?' selected':'').'>L - smallest</option>
           <option value="M"'.(($errorCorrectionLevel=='M')?' selected':'').'>M</option>
           <option value="Q"'.(($errorCorrectionLevel=='Q')?' selected':'').'>Q</option>
           <option value="H"'.(($errorCorrectionLevel=='H')?' selected':'').'>H - best</option>
       </select></td>
</tr>
<tr>
<td>Size: </td><td><select name="size">';

   for($i=1;$i<=10;$i++)
       echo '<option value="'.$i.'"'.(($matrixPointSize==$i)?' selected':'').'>'.$i.'</option>';

   echo '</select></td></tr>
<tr>
<td> </td>
<td><input type="submit" value="GENERATE"></td>
 </tr>

 </table>
 </form>

 <hr/>';

   // benchmark
   QRtools::timeBenchmark(); 

?>

Below was my idea of how to upload and insert...but i dont know what value to give the $showname because it usually comes from a form.

<?php  


   echo "<h1>PHP QR Code</h1><hr/>";

   //set it to writable location, a place for temp generated PNG files
   $PNG_TEMP_DIR = dirname(__FILE__).DIRECTORY_SEPARATOR.'temp'.DIRECTORY_SEPARATOR;

   //html PNG location prefix
   $PNG_WEB_DIR = 'temp/';

   include "qrlib.php";    

   //ofcourse we need rights to create temp dir
   if (!file_exists($PNG_TEMP_DIR))
       mkdir($PNG_TEMP_DIR);


   $filename = $PNG_TEMP_DIR.'test.png';

   //processing form input
   //remember to sanitize user input in real-life solution !!!
   $errorCorrectionLevel = 'L';
   if (isset($_REQUEST['level']) && in_array($_REQUEST['level'], array('L','M','Q','H')))
       $errorCorrectionLevel = $_REQUEST['level'];    

   $matrixPointSize = 4;
   if (isset($_REQUEST['size']))
       $matrixPointSize = min(max((int)$_REQUEST['size'], 1), 10);


   if (isset($_REQUEST['data'])) { 

       //it's very important!
       if (trim($_REQUEST['data']) == '')
           die('data cannot be empty! <a href="?">back</a>');

       // user data
       $filename = $PNG_TEMP_DIR.'test'.md5($_REQUEST['data'].'|'.$errorCorrectionLevel.'|'.$matrixPointSize).'.png';
       QRcode::png($_REQUEST['data'], $filename, $errorCorrectionLevel, $matrixPointSize, 2);    

   } else {    

       //default data
       echo 'You can provide data in GET parameter: <a href="?data=like_that">like that</a><hr/>';    
       QRcode::png('PHP QR Code ', $filename, $errorCorrectionLevel, $matrixPointSize, 2);    

   }    

   //display generated file
   echo '<img src="'.$PNG_WEB_DIR.basename($filename).'" /><hr/>';  

//------------------------------------------------------------------------------upload/insert------------------------------------------------------

set_time_limit(0);
require_once("Connections/busloreConnect.php");
mysql_select_db("db_businesslore_com");

$name = $_POST['name'];
$content = $_POST['content'];

$filetype = $_FILES['pic']['type'];
if($filetype == "image/png") { 
$target_path = "images/".$target_path.basename( $_FILES['pic']['name']); 
$showname = basename( $_FILES['pic']['name']);//-----------------*****************i dont know which value to give this***********---------------------//
if(move_uploaded_file($_FILES['pic']['tmp_name'], $target_path)) {
$querystring = "INSERT INTO qr_generator(qr_id,qr_name,qr_content,qr_pic) VALUES(NULL,'".$name."','".$content."','".$showname."')";
$doquery = mysql_query($querystring);
echo "";
} else{
   echo "There was an error uploading the file, please try again!";
}
}

//-------------------------------------------------------------------------------------------------------------------------------------------------

   //config form
   echo '<form action="index.php" method="post">
<table border="0">
<tr>
<td>Name: </td><td><input type="text" name="name" id="name"/></td>
</tr>
<tr>
<td>Content: </td><td><textarea name="content" cols="45" rows="15"></textarea></td>
</tr>
<tr>
   <td>Data: </td><td><input name="data" value="'.(isset($_REQUEST['data'])?htmlspecialchars($_REQUEST['data']):'PHP QR Code ').'" /></td>
</tr>
<tr>
   <td>ECC: </td><td><select name="level">
           <option value="L"'.(($errorCorrectionLevel=='L')?' selected':'').'>L - smallest</option>
           <option value="M"'.(($errorCorrectionLevel=='M')?' selected':'').'>M</option>
           <option value="Q"'.(($errorCorrectionLevel=='Q')?' selected':'').'>Q</option>
           <option value="H"'.(($errorCorrectionLevel=='H')?' selected':'').'>H - best</option>
       </select></td>
</tr>
<tr>
<td>Size: </td><td><select name="size">';

   for($i=1;$i<=10;$i++)
       echo '<option value="'.$i.'"'.(($matrixPointSize==$i)?' selected':'').'>'.$i.'</option>';

   echo '</select></td></tr>
<tr>
<td> </td>
<td><input type="submit" value="GENERATE"></td>
 </tr>

 </table>
 </form>

 <hr/>';

   // benchmark
   QRtools::timeBenchmark(); 
?>

Can anyone let me know if I am on the right track ? or more likely.... way off?

cdoggg94 · January 11, 2013

I take it this is a really weird question from the amount of responses

cdoggg94 · January 18, 2013

there is also a file in the library called "qrimage.php"

which is attached to the "qrlib.php" file.

the code on this page is this:

<?php

define('QR_IMAGE', true);


   class QRimage {

       //----------------------------------------------------------------------
       public static function png($frame, $filename = false, $pixelPerPoint = 4, $outerFrame = 4,$saveandprint=FALSE) 
       {
           $image = self::image($frame, $pixelPerPoint, $outerFrame);

           if ($filename === false) {
               Header("Content-type: image/png");
               ImagePng($image);
           } else {
               if($saveandprint===TRUE){
                   ImagePng($image, $filename);
                   header("Content-type: image/png");
                   ImagePng($image);
               }else{
                   ImagePng($image, $filename);
               }
           }

           ImageDestroy($image);
       }

       //----------------------------------------------------------------------
       public static function jpg($frame, $filename = false, $pixelPerPoint = 8, $outerFrame = 4, $q = 85) 
       {
           $image = self::image($frame, $pixelPerPoint, $outerFrame);

           if ($filename === false) {
               Header("Content-type: image/jpeg");
               ImageJpeg($image, null, $q);
           } else {
               ImageJpeg($image, $filename, $q);            
           }

           ImageDestroy($image);
       }

       //----------------------------------------------------------------------
       private static function image($frame, $pixelPerPoint = 4, $outerFrame = 4) 
       {
           $h = count($frame);
           $w = strlen($frame[0]);

           $imgW = $w + 2*$outerFrame;
           $imgH = $h + 2*$outerFrame;

           $base_image =ImageCreate($imgW, $imgH);

           $col[0] = ImageColorAllocate($base_image,255,255,255);
           $col[1] = ImageColorAllocate($base_image,0,0,0);


           imagefill($base_image, 0, 0, $col[0]);




           for($y=0; $y<$h; $y++) {
               for($x=0; $x<$w; $x++) {
                   if ($frame[$y][$x] == '1') {
                       ImageSetPixel($base_image,$x+$outerFrame,$y+$outerFrame,$col[1]); 
                   }
               }
           }

           $target_image =ImageCreate($imgW * $pixelPerPoint, $imgH * $pixelPerPoint);
           ImageCopyResized($target_image, $base_image, 0, 0, 0, 0, $imgW * $pixelPerPoint, $imgH * $pixelPerPoint, $imgW, $imgH);
           ImageDestroy($base_image);

           return $target_image;
       }
   }

could this be where I would add the upload file script ?

DavidAM · January 20, 2013

If you want to store the image on the same server that is generating the image, you do not "upload" the image --- it is already there. You just need to store or copy the image to where you want it.

This part of the code:

if (isset($_REQUEST['data'])) { 

   //it's very important!
   if (trim($_REQUEST['data']) == '')
           die('data cannot be empty! <a href="?">back</a>');

   // user data
   $filename = $PNG_TEMP_DIR.'test'.md5($_REQUEST['data'].'|'.$errorCorrectionLevel.'|'.$matrixPointSize).'.png';
   QRcode::png($_REQUEST['data'], $filename, $errorCorrectionLevel, $matrixPointSize, 2);  

} else {        

   //default data
   echo 'You can provide data in GET parameter: <a href="?data=like_that">like that</a><hr/>';     
   QRcode::png('PHP QR Code ', $filename, $errorCorrectionLevel, $matrixPointSize, 2);   

}

appears to be placing the image in a file in the $PNG_TEMP_DIR. You should be able to copy or move the generated file to your images directory.

On a side note, unless there is some code somewhere to clean out that temporary directory, it is going to collect a lot of files. I would recommend cleaning it out periodically (with a cron job).

cdoggg94 · January 21, 2013

Thank you

I am going to try a few things right now!

I appreciate the help

cdoggg94 · January 22, 2013

I ended up with this:

// user data
       $filename = $PNG_TEMP_DIR.'test'.md5($_REQUEST['data'].'|'.$errorCorrectionLevel.'|'.$matrixPointSize).'.png';
       QRcode::png($_REQUEST['data'], $filename, $errorCorrectionLevel, $matrixPointSize, 2);
 //copy image to images folder
 copy($PNG_TEMP_DIR.'test'.md5($_REQUEST['data'].'|'.$errorCorrectionLevel.'|'.$matrixPointSize).'.png', 'images/test'.md5($_REQUEST['data'].'|'.$errorCorrectionLevel.'|'.$matrixPointSize).'.png');

and it seemed to have worked pretty good !

but its only copied so yea I am going to have to clean out the temp folder from time to time

Thanks a lot for the help

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QR image generator questions...(uploading the image after its created)

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