Resizing a blob

[awebbdesigner]

Hi I have create a script that adds a image as blob successfully,

however now I want to create a thumbnail, I have the following code; can someone help...

 

# open and code into blob

$fp = fopen($safename, 'r');

$content = fread($fp, filesize($safename));

$thumb = $content;

$content = addslashes($content);

fclose($fp);

 

# resize accordingly...

$thumb = new resize($content, $width, $height, 300);

 

# the class that does the resizing (WHERE I THINK ITS GONE WRONG)

class resize {

public $new_image_blob = "";

function __construct($blob, $width, $height, $amount) {

 

  # the maximum width and height as set by the user

  $thumb_height_max = $amount;

  $thumb_width_max = $amount;

 

  # maintain aspect ratio landscape or portrait

  if($width < $height) {

  $new_width = ($thumb_height_max / $height) * $width;

  $new_height = $thumb_height_max;

  $needtoresize = ($height < $thumb_height_max);

  } else {

  $new_width = $thumb_width_max;

  $new_height = ($thumb_width_max / $width) * $height;

  $needtoresize = ($width < $thumb_width_max);

  }   

 

  # now that we have the new width and heightwe need to resize the blob

  $im = imagecreatefromstring($blob);

  $thumb = imagecreatetruecolor($new_width, $new_height);

  imagecopyresampled($thumb, $im, 0, 0, 0, 0, $new_width, $new_height, ImageSX($im), ImageSY($im));

  $this->new_image_blob = addslashes($thumb);

}

}

 

# then the query below adds the code (the original blob goes in correctly (ablob) but bblob (the resized blob doesn't))

$iS = "INSERT INTO $tableb (pal, afield, bfield, cfield, dfield, efield, ffield, gfield, ablob, bblob, cblob, dblob) VALUES

('6', '$fk', '$filename', '$size', '$fileExtension', '$width', '$height', '$orientation', '$content', '$thumb->new_image_blob', '$four', '$two')";

 

[awebbdesigner]

Found the solution, needed to re-write my resize class to work off the temporary image upload and not the blob...

 

The upload processing page

<?php

 

ini_set('display_errors', 1);

error_reporting(E_ALL);

 

include("../../connect.php");

include("resize.php");

 

# these settings should help

set_time_limit(0);

ini_set('upload_max_filesize', '12M');

ini_set("memory_limit", "16M");

 

# going in as a blob from now on

$stamp = mktime();

$safename = $_FILES['Filedata']['tmp_name'];

$filename = $_FILES['Filedata']['name'];

$size = $_FILES['Filedata']['size'];

$type = $_FILES['Filedata']['type'];

$fk = $_REQUEST['fk'];

 

# open and code into blob

$fp = fopen($safename, 'r');

$content = fread($fp, filesize($safename));

$thumb = $content;

$content = addslashes($content);

fclose($fp);

 

# find out what it is, uploadify send everything through as application, so we need to split the filename

$fileExplode = explode('.', $filename, 3);

$fileExtension = strtolower($fileExplode[1]);

 

if($fileExtension == 'jpg' xor $fileExtension == 'png' xor $fileExtension == 'gif') {

 

# find out image size and create thumbnails... 800 400 100

list($width, $height) = getimagesize($safename);

if ($width > $height) { $orientation = "landscape";

} elseif ($width < $height) { $orientation = "portrait";

} else { $orientation = "square"; };

 

# max width/height = 800

$eight = new resize($safename, $width, $height, 800);

$four = new resize($safename, $width, $height, 400);

$one = new resize($safename, $width, $height, 150);

 

}

 

$iS = "INSERT INTO $tableb (pal, afield, bfield, cfield, dfield, efield, ffield, gfield, ablob, bblob, cblob, dblob) VALUES

('6', '$fk', '$filename', '$size', '$fileExtension', '$width', '$height', '$orientation', '$content', '$eight->new_image_blob', '$four->new_image_blob', '$one->new_image_blob')";

$iQ = mysql_query($iS) or die (mysql_error());

 

print "1";

 

// print "<p>$eight->new_image_blob</p>";

 

?>

 

The class I wrote to solve resize the images into blobs...

 

<?php

 

class resize {

public $new_image_blob = "--";

function __construct($image_file, $width, $height, $amount) {

 

        # the maximum width and height as set by the user

        $thumb_height_max = $amount;

                $thumb_width_max = $amount;

 

# maintain aspect ratio landscape or portrait

if($width < $height) {

$new_width = ($thumb_height_max / $height) * $width;

                    $new_height = $thumb_height_max;

$needtoresize = ($height < $thumb_height_max);

} else {

          $new_width = $thumb_width_max;

                    $new_height = ($thumb_width_max / $width) * $height;

                    $needtoresize = ($width < $thumb_width_max);

                }

   

        $src = imagecreatefromjpeg($image_file);

        $tmp = imagecreatetruecolor($new_width,$new_height);

        imagecopyresampled($tmp,$src,0,0,0,0,$new_width, $new_height,$width,$height);

   

        # get the image, then re-convert

        ob_start();

        imagejpeg($tmp, NULL, 100);

        $final_image = ob_get_contents();

        ob_end_clean();

 

  # this should be it

        $this->new_image_blob = addslashes($final_image);

  }

}

 

?>