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The most compatible PHP code to generate thumbnails_PHP Tutorial
- WBOYOriginal
- 2016-07-20 11:05:36866browse
function ImageResize($srcFile,$toW,$toH,$toFile="")
{
if($toFile==""){ $toFile = $srcFile; }
$info = "";
$data = GetImageSize($srcFile,$info);
switch ($data[2])
{
case 1:
if(!function_exists("imagecreatefromgif ")){
echo "Your GD library cannot use GIF format images, please use Jpeg or PNG format! Returnexit();
}
$im = ImageCreateFromGIF($srcFile);
break;
case 2:
if(!function_exists("imagecreatefromjpeg")) {
echo "Your GD library cannot use images in jpeg format, please use images in other formats!Return";
exit();
}
$im = ImageCreateFromJpeg($srcFile);
break;
case 3:
$im = ImageCreateFromPNG($srcFile);
break ;
}
$srcW=ImageSX($im);
$srcH=ImageSY($im);
$toWH=$toW/$toH;
$srcWH=$srcW/ $srcH;
if($toWH<=$srcWH){
$ftoW=$toW;
$ftoH=$ftoW*($srcH/$srcW);
}
else {
$ftoH=$toH;
$ftoW=$ftoH*($srcW/$srcH);
}
if($srcW>$toW||$srcH>$toH)
{
if(function_exists("imagecreatetruecolor")){
@$ni = ImageCreateTrueColor($ftoW,$ftoH);
if($ni) ImageCopyResampled($ni,$im,0, 0,0,0,$ftoW,$ftoH,$srcW,$srcH);
else{
$ni=ImageCreate($ftoW,$ftoH);
ImageCopyResized($ni,$im, 0,0,0,0,$ftoW,$ftoH,$srcW,$srcH);
}
}else{
$ni=ImageCreate($ftoW,$ftoH);
ImageCopyResized ($ni,$im,0,0,0,0,$ftoW,$ftoH,$srcW,$srcH);
}
if(function_exists('imagejpeg')) ImageJpeg($ni,$ toFile);
else ImagePNG($ni,$toFile);
ImageDestroy($ni);
}
ImageDestroy($im);
}