12 replies to this topic

[Rojay]

how can i convert gifs and pngs to jpeg using php ??

[guangdian]

Oh if you just got the ACDsee you will convert it by ACDsee
if you not installing it.i think photoshop can do it.
but
there is so lots of programme (open source or not opensource ) you can just trying them just search on enginne for this sort of programmes.

GoodLuck
Guangdian.

[clagnol]

Lol. I don't think guangdian understands the question.

But, I'm interested to know the answer, too. The Facebook employs a script to do this.

[rvalkass]

There is a way. You would have to upload the file, open it, start a blank picture with the same dimentions and add the first image to it then save it as a .jpg under a different name.
I'll have a go and see if I can get a script to work.

[truefusion]

I use Irfan View to convert Images. I believe it's still freeware.

[mizako]

I think some of you missunderstood the question. The guy is looking for a script to transform in the fly pictures from png & gif to jpg. You should look for functions such as fopen fwrite and particular from php to manage those extensions. I do not know the names of those functions by head but it should not take you a lot to look for them in google or directly in the php manual.

[DoR]

A simple way is, if you have installed imagemagick, upload the image and call to "convert" binary to convert from one format to another.
It is simple and powerfull.

The web site of imagemagick is http://www.imagemagick.org/
It is based on GPL license and can be installed on linux, solaris, windows, mac os x, freebsd,...

These are two links to pages explaining the usage of imagemagick from php:
1) Link 1
2) Link 2


If you have the images already on the server, you should convert them all only once.

Hope usefull.
DoR.

[alexia]

Use Adobe Photoshop for image convert
for web application visit and search in www.hotscripts.com

[HmmZ]

People reply with useless replys really...

But what you're asking for is not an easy function, it will need to use mysql databases aswell....
guess ill give it a go ..

First: make a mysql table

CREATE TABLE images (
img_id int(9) NOT NULL auto_increment,
img_file varchar(13) NOT NULL default '',
img_type enum('JPG','PNG') NOT NULL default 'JPG',
img_height int(6) NOT NULL default '0',
img_width int(6) NOT NULL default '0',
img_bytes int(9) NOT NULL default '0',
img_title text NOT NULL,
img_descr text NOT NULL,
img_alt text NOT NULL,
PRIMARY KEY (img_id)
) TYPE=MyISAM;

The table is needed to store the images, converted images and to insert,update and retrieve image info

Next:

//Define dirs
$base_img_dir = "./img/";
$img_conv_dir = "./bin/";

//Image table
$img_table = "images";

//Database connection !!needs your info!!
mysql_connect("host", "user", "pass");
mysql_select_db("yourtable");

//Generate a unique image property..id
$uniq = uniqid("");

// new file name
$filename = $base_img_dir.$uniq;

//Get image size
$imginfo = getimagesize($filename);


//Get image extension
function image_type_to_extension($imagetype,$include_dot=false)
{
if(empty($imagetype)) return false;
switch($imagetype)
{
case IMAGETYPE_GIF: return 'gif';
case IMAGETYPE_JPEG: return 'jpg';
case IMAGETYPE_PNG: return 'png';
case IMAGETYPE_SWF: return 'swf';
case IMAGETYPE_WBMP: return 'wbmp';
default: return false;}}

//full image name
$Dot='.';
$image="$filename$Dot$imagetype";

//find non jpg
if(($imagetype==gif) || ($imagetype==png) || ($imagetype==swf) || ($imagetype==wbmp)){
$imagetype='jpg';

//Remove original and rename new to save space
unlink($filename);
$jpgimg=$filename$imagetype;

//preload check
if($imagetype=!'jpg'){
$imagetype='jpg;
$Dot='.';
$jpgimg="$filename$Dot$imagetype;}

//Load image to check correct handling
$img = imagecreatefromjpg($filename);
imagejpg($img, $filename);
imagedestroy($img);

//Done...get it into your db
// insert image into db
mysql_query("INSERT INTO $img_table (img_file, img_type, img_height,
img_width, img_bytes, img_title, img_descr, img_alt)
VALUES('$uniq', '$img_type', ".$imginfo[1].", ".$imginfo[0].",
$imgbytes, '".addslashes($HTTP_POST_VARS["title"])."', '".
addslashes($HTTP_POST_VARS["descr"])."',
'".addslashes($HTTP_POST_VARS["alt"])."');");

//Last chance on failure..
if($filename$Dot$imagetype=!$filename.jpg){
$color="#ff0000"';
$result = "Sorry, Image conversion failed";;}
else {
$color="#06FF00";
$result = "Success! Your image was successfully converted to the .JPG extension!";}

//Result screen
echo "Your Image: ".$filename$Dot$imagetype."";
echo "<br>";
echo "has received the following result:";
echo "<br>";
echo "<font color=\"".$color."\">$result</font>";

I am (of course) unsure if this qorks, but it's a step in the right way ( i think i do know a bit of PHP o.O;..

Hope this helps you

[bluedragon]

I've seen a C library for converting images but what you are asking I am really unsure.

I can understand that png to jpeg is possible but Gif to jpeg i don't know. because in most of the cases Gifs are in motion.

kindly clear your question.