note 89866 added to function.imagejpeg

I didn't find any example like this on the Web, so I mixed pieces together.. hope this will save time to other people! Here's a complete solution to READ any image (gif jpg png) from the FILESYSTEM, SCALE it to a max width/height, SAVE the scaled image to a BLOB field keeping the original image type. Quite tricky.. <?php function scaleImageFileToBlob($file) { $source_pic = $file; $max_width = 200; $max_height = 200; list($width, $height, $image_type) = getimagesize($file); switch ($image_type) { case 1: $src = imagecreatefromgif($file); break; case 2: $src = imagecreatefromjpeg($file); break; case 3: $src = imagecreatefrompng($file); break; default: return ''; break; } $x_ratio = $max_width / $width; $y_ratio = $max_height / $height; if( ($width <= $max_width) && ($height <= $max_height) ){ $tn_width = $width; $tn_height = $height; }elseif (($x_ratio * $height) < $max_height){ $tn_height = ceil($x_ratio * $height); $tn_width = $max_width; }else{ $tn_width = ceil($y_ratio * $width); $tn_height = $max_height; } $tmp = imagecreatetruecolor($tn_width,$tn_height); /* Check if this image is PNG or GIF, then set if Transparent*/ if(($image_type == 1) OR ($image_type==3)) { imagealphablending($tmp, false); imagesavealpha($tmp,true); $transparent = imagecolorallocatealpha($tmp, 255, 255, 255, 127); imagefilledrectangle($tmp, 0, 0, $tn_width, $tn_height, $transparent); } imagecopyresampled($tmp,$src,0,0,0,0,$tn_width, $tn_height,$width,$height); /* * imageXXX() only has two options, save as a file, or send to the browser. * It does not provide you the oppurtunity to manipulate the final GIF/JPG/PNG file stream * So I start the output buffering, use imageXXX() to output the data stream to the browser, * get the contents of the stream, and use clean to silently discard the buffered contents. */ ob_start(); switch ($image_type) { case 1: imagegif($tmp); break; case 2: imagejpeg($tmp, NULL, 100); break; // best quality case 3: imagepng($tmp, NULL, 0); break; // no compression default: echo ''; break; } $final_image = ob_get_contents(); ob_end_clean(); return $final_image; } ?> So, let's suppose you have a form where a user can upload an image, and you have to scale it and save it into your database. <?php [..] // the user has clicked the Submit button.. // Check if the user entered an image if ($_FILES['imagefile']['name'] != '') { $image = scaleImageFileToBlob($_FILES['imagefile']['tmp_name']); if ($image == '') { echo 'Image type not supported'; } else { $image_type = $_FILES['imagefile']['type']; $image = addslashes($image); $query = "UPDATE yourtable SET image_type='$image_type', image='$image' WHERE ..."; $result = mysql_query($query); if ($result) { echo 'Image scaled and uploaded'; } else { echo 'Error running the query'; } } } ?> ---- Server IP: 92.48.74.199 Probable Submitter: 135.196.28.254 ---- Manual Page -- http://www.php.net/manual/en/function.imagejpeg.php Edit -- https://master.php.net/note/edit/89866 Del: integrated -- https://master.php.net/note/delete/89866/integrated Del: useless -- https://master.php.net/note/delete/89866/useless Del: bad code -- https://master.php.net/note/delete/89866/bad+code Del: spam -- https://master.php.net/note/delete/89866/spam Del: non-english -- https://master.php.net/note/delete/89866/non-english Del: in docs -- https://master.php.net/note/delete/89866/in+docs Del: other reasons-- https://master.php.net/note/delete/89866 Reject -- https://master.php.net/note/reject/89866 Search -- https://master.php.net/manage/user-notes.php