Image resize without using GD

[vbnullchar]

is there a way to resize an image without using gd then output a thumbnailed image.

thanks!!

[heckenschutze]

Yes but its a hell of a lot of work :)

One method is to; Write the image parsers yourself, which would mean handling binary data inside your script... this also means you'd need to also write/use a zip decompressor/compressor if you wanted to I/O PNGs.

Or you could search for other Perl/PHP Modules, possibly use ImageMagiK (sp?)

hth

[vbnullchar]

heres the configure command my webhost used [code]'./configure' '--enable-ftp' '--enable-mysql' '--with-mysql' '--with-zlib' '-with-apxs2=/usr/local/apache2/bin/apxs'[/code]

can u suggest somethng?

[Vikas Jayna]

Do you have the [b]ImageMagick[/b] library installed on the server. In case you do, then the [b]convert command[/b] can be called from within php using [b]passthru function[/b] like this:

[code]passthru("/usr/bin/convert -resize 30x30 image.jpg -");[/code]

this will output the thumbnail of size 30x30 to the browser. image.jpg should be an image file on the disk.

[roadhead]

[quote author=Vikas Jayna link=topic=114369.msg465394#msg465394 date=1163071834]
Do you have the [b]ImageMagick[/b] library installed on the server. In case you do, then the [b]convert command[/b] can be called from within php using [b]passthru function[/b] like this:

[code]passthru("/usr/bin/convert -resize 30x30 image.jpg -");[/code]

this will output the thumbnail of size 30x30 to the browser. image.jpg should be an image file on the disk.
[/quote]

What if my image is stored in a MySQL database base64 encoded?

[Vikas Jayna]

decode the image with [b]base64_decode()[/b] and then write it to a temporary file on the disk (say image.jpg). In case you do not wish to write the file on the disk, then the code would look something like this:

[code]$fp=popen("/usr/bin/convert -resize 30x30 - -");
fwrite($fp,$imagecontent);
pclose($fp);[/code]

Here the command uses an additional [b]hyphen[/b] which means that the input image will come from standard input stream i.e. the content writen by [b]fwrite[/b] function

[kenrbnsn]

If the images come from a recent digital camera, you may be able to use one of the [url=http://www.php.net/exif]exif[/url] functions, especially the [url=http://www.php.net/exif_thumbnail]exif_thumbnail()[/url] function which extracts the embedded thumbnail from the full size picture.

Ken

[marknt]

[code]
<?php
function imageResize($width, $height, $target) {

if ($width > $height) {
$percentage = ($target / $width);
} else {
$percentage = ($target / $height);
}

//gets the new value and applies the percentage, then rounds the value
$width = round($width * $percentage);
$height = round($height * $percentage);

//returns the new sizes in html image tag format...this is so you
//can plug this function inside an image tag and just get the
return "width=\"$width\" height=\"$height\"";
}
$pic = "./images/picture.jpg";
$mysock = getimagesize($pic);
$var = imageResize($mysock[0], $mysock[1], 150);
?>

<img src="<?=$pic?>" <?=$var?>>
[/code]

It worked for me promise. It feels good to help someone. I have learned the hard way when I'm still starting as a PHP Developer.

[heckenschutze]

The image is still going to have the same size, byte wise...

Not sure that's what he's after. :)

[marknt]

[quote author=heckenschutze link=topic=114369.msg466406#msg466406 date=1163230963]
The image is still going to have the same size, byte wise...

Not sure that's what he's after. :)
[/quote]
Yes you are correct. Same size but in thumbnail view. For example resize it by minus 25% but same size