Very simple PHP thumbnail generation program source code

A very simple PHP code program that generates thumbnails. the parameters and code can be simplified. if you are interested, you can try its functions. please correct me if it is not perfect. Non-original, from network "> <LINKhref =" http://www.php100.com//statics/style/headfloor_950_081205.css "type = text/

$ FILENAME = "image_name ";

// Generate the image width
$ RESIZEWIDTH = 400;

// Generate the image height
$ RESIZEHEIGHT = 400;

Function ResizeImage ($ im, $ maxwidth, $ maxheight, $ name ){
$ Width = imagesx ($ im );
$ Height = imagesy ($ im );
If ($ maxwidth & $ width> $ maxwidth) | ($ maxheight & $ height> $ maxheight )){
If ($ maxwidth & $ width> $ maxwidth ){
$ Widthratio = $ maxwidth/$ width;
$ RESIZEWIDTH = true;
}
If ($ maxheight & $ height> $ maxheight ){
$ Heightratio = $ maxheight/$ height;
$ RESIZEHEIGHT = true;
}
If ($ RESIZEWIDTH & $ RESIZEHEIGHT ){
If ($ widthratio <$ heightratio ){
$ Ratio = $ widthratio;
} Else {
$ Ratio = $ heightratio;
}
} Elseif ($ RESIZEWIDTH ){
$ Ratio = $ widthratio;
} Elseif ($ RESIZEHEIGHT ){
$ Ratio = $ heightratio;
}
$ Newwidth = $ width * $ ratio;
$ Newheight = $ height * $ ratio;
If (function_exists ("imagecopyresampled ")){
Www.phperz.com

$ Newim = imagecreatetruecolor ($ newwidth, $ newheight );
Imagecopyresampled ($ newim, $ im, 0, 0, 0, 0, $ newwidth, $ newheight, $ width, $ height );
} Else {
$ Newim = imagecreate ($ newwidth, $ newheight );
Imagecopyresized ($ newim, $ im, 0, 0, 0, 0, $ newwidth, $ newheight, $ width, $ height );
}
ImageJpeg ($ newim, $ name. ". jpg ");
ImageDestroy ($ newim );
} Else {
ImageJpeg ($ im, $ name. ". jpg ");
}
}

 

If ($ _ FILES ['image'] ['size']) {
If ($ _ FILES ['image'] ['type'] = "image/pjpeg "){
$ Im = imagecreatefromjpeg ($ _ FILES ['image'] ['tmp _ name']);
} Elseif ($ _ FILES ['image'] ['type'] = "image/x-png "){
$ Im = imagecreatefrompng ($ _ FILES ['image'] ['tmp _ name']);
} Elseif ($ _ FILES ['image'] ['type'] = "image/gif "){
$ Im = imagecreatefromgif ($ _ FILES ['image'] ['tmp _ name']);
}
If ($ im ){
If (file_exists ("your filename.jpg ")){
Unlink ("your filename.jpg ");
}
ResizeImage ($ im, $ RESIZEWIDTH, $ RESIZEHEIGHT, $ FILENAME); www ~ Phperz ~ Com
ImageDestroy ($ im );
}
}

?>

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