function make_small_copy($src)
{
$dir = substr($src,0,strrpos($src,'/') + 1);
$small_img = 'small_' . substr($src,strrpos($src,'/') + 1);
$data = getimagesize($src);
switch($data[2])
{
case 1:
$im = @imagecreatefromgif($src);
break;
case 2:
$im = @imagecreatefromjpeg($src);
break;
case 3:
$im = @imagecreatefrompng($src);
break;
}
$dstw = 150;
$dsth = 80;
$ni = imagecreatetruecolor($dstw,$dsth);
imagecopyresized($ni,$im,0,0,0,0,$dstw,$dsth,$data[0],$data[1]);
imagegif($ni,$dir . $small_img);
imagedestroy($ni);
}/// 参数是原始图片的路径~
{
$dir = substr($src,0,strrpos($src,'/') + 1);
$small_img = 'small_' . substr($src,strrpos($src,'/') + 1);
$data = getimagesize($src);
switch($data[2])
{
case 1:
$im = @imagecreatefromgif($src);
break;
case 2:
$im = @imagecreatefromjpeg($src);
break;
case 3:
$im = @imagecreatefrompng($src);
break;
}
$dstw = 150;
$dsth = 80;
$ni = imagecreatetruecolor($dstw,$dsth);
imagecopyresized($ni,$im,0,0,0,0,$dstw,$dsth,$data[0],$data[1]);
imagegif($ni,$dir . $small_img);
imagedestroy($ni);
}/// 参数是原始图片的路径~
{
$width = imagesx($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"))
{
$newim = imagecreatetruecolor($newwidth, $newheight);
imagecopyresampled($newim, $im, 0, 0, 0, 0, $newwidth, $newheight, $width, $height);
//echo "test1";
}
else
{
$newim = imagecreate($newwidth, $newheight);
imagecopyresized($newim, $im, 0, 0, 0, 0, $newwidth, $newheight, $width, $height);
//echo "test2";
}
Imagepng ($newim,$name);
ImageDestroy ($newim);
}
else
{
Imagepng ($im,$name);
}
}
$RESIZEWIDTH=83; // 生成图片的高度
$RESIZEHEIGHT=100; function ResizeImage($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;
$newwidth=83;
$newheight=100;
if(function_exists("imagecopyresampled")){
$newim = imagecreatetruecolor($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($im){
if(file_exists("$FILENAME.jpg")){
unlink("$FILENAME.jpg");
}
ResizeImage($im,$RESIZEWIDTH,$RESIZEHEIGHT,$FILENAME);
ImageDestroy ($im);
}
} ?> <img src="<? echo($FILENAME.".jpg?reload=".rand(0,999999)); ?>"><br><br> <form enctype="multipart/form-data" method="post">
<br>
<input type="file" name="image" size="50" value="浏览"><p>
<input type="submit" value="上传图片">
</form> </body>
</html> 这个生成的只有2k多