这样子在本地环境就可以直接测试使用。

<?php
class CreatMiniature
{
//公共变量
var $srcFile="";        //原图
var $echoType;            //输出图片类型，link--不保存为文件；file--保存为文件
var $im="";                //临时变量
var $srcW="";            //原图宽
var $srcH="";            //原图高

//设置变量及初始化
function SetVar($srcFile,$echoType)
{
$this->srcFile=$srcFile;
$this->echoType=$echoType;

$info = "";
$data = GetImageSize($this->srcFile,$info);
switch ($data[2])
{
case 1:
if(!function_exists("imagecreatefromgif")){
echo "你的GD库不能使用GIF格式的图片，请使用Jpeg或PNG格式！<a href='javascript:go(-1);'>返回</a>";
exit();
}
$this->im = ImageCreateFromGIF($this->srcFile);
break;
case 2:
if(!function_exists("imagecreatefromjpeg")){
echo "你的GD库不能使用jpeg格式的图片，请使用其它格式的图片！<a href='javascript:go(-1);'>返回</a>";
exit();
}
$this->im = ImageCreateFromJpeg($this->srcFile);
break;
case 3:
$this->im = ImageCreateFromPNG($this->srcFile);
break;
}
$this->srcW=ImageSX($this->im);
$this->srcH=ImageSY($this->im);
}

//生成扭曲型缩图
function Distortion($toFile,$toW,$toH)
{
$cImg=$this->CreatImage($this->im,$toW,$toH,0,0,0,0,$this->srcW,$this->srcH);
return $this->EchoImage($cImg,$toFile);
ImageDestroy($cImg);
}

//生成按比例缩放的缩图
function Prorate($toFile,$toW,$toH)
{
$toWH=$toW/$toH;
$srcWH=$this->srcW/$this->srcH;
if($toWH<=$srcWH)
{
$ftoW=$toW;
$ftoH=$ftoW*($this->srcH/$this->srcW);
}
else
{
$ftoH=$toH;
$ftoW=$ftoH*($this->srcW/$this->srcH);
}
if($this->srcW>$toW||$this->srcH>$toH)
{
$cImg=$this->CreatImage($this->im,$ftoW,$ftoH,0,0,0,0,$this->srcW,$this->srcH);
return $this->EchoImage($cImg,$toFile);
ImageDestroy($cImg);
}
else
{
$cImg=$this->CreatImage($this->im,$this->srcW,$this->srcH,0,0,0,0,$this->srcW,$this->srcH);
return $this->EchoImage($cImg,$toFile);
ImageDestroy($cImg);
}
}

//生成最小裁剪后的缩图
function Cut($toFile,$toW,$toH)
{
$toWH=$toW/$toH;
$srcWH=$this->srcW/$this->srcH;
if($toWH<=$srcWH)
{
$ctoH=$toH;
$ctoW=$ctoH*($this->srcW/$this->srcH);
}
else
{
$ctoW=$toW;
$ctoH=$ctoW*($this->srcH/$this->srcW);
}
$allImg=$this->CreatImage($this->im,$ctoW,$ctoH,0,0,0,0,$this->srcW,$this->srcH);
$cImg=$this->CreatImage($allImg,$toW,$toH,0,0,($ctoW-$toW)/2,($ctoH-$toH)/2,$toW,$toH);
return $this->EchoImage($cImg,$toFile);
ImageDestroy($cImg);
ImageDestroy($allImg);
}

//生成背景填充的缩图
function BackFill($toFile,$toW,$toH,$bk1=255,$bk2=255,$bk3=255)
{
$toWH=$toW/$toH;
$srcWH=$this->srcW/$this->srcH;
if($toWH<=$srcWH)
{
$ftoW=$toW;
$ftoH=$ftoW*($this->srcH/$this->srcW);
}
else
{
$ftoH=$toH;
$ftoW=$ftoH*($this->srcW/$this->srcH);
}
if(function_exists("imagecreatetruecolor"))
{
@$cImg=ImageCreateTrueColor($toW,$toH);
if(!$cImg)
{
$cImg=ImageCreate($toW,$toH);
}
}
else
{
$cImg=ImageCreate($toW,$toH);
}
$backcolor = imagecolorallocate($cImg, $bk1, $bk2, $bk3);        //填充的背景颜色
ImageFilledRectangle($cImg,0,0,$toW,$toH,$backcolor);
if($this->srcW>$toW||$this->srcH>$toH)
{
$proImg=$this->CreatImage($this->im,$ftoW,$ftoH,0,0,0,0,$this->srcW,$this->srcH);
/*
if($ftoW<$toW)
{
ImageCopyMerge($cImg,$proImg,($toW-$ftoW)/2,0,0,0,$ftoW,$ftoH,100);
}
else if($ftoH<$toH)
{
ImageCopyMerge($cImg,$proImg,0,($toH-$ftoH)/2,0,0,$ftoW,$ftoH,100);
}
*/
if($ftoW<$toW)
{
ImageCopy($cImg,$proImg,($toW-$ftoW)/2,0,0,0,$ftoW,$ftoH);
}
else if($ftoH<$toH)
{
ImageCopy($cImg,$proImg,0,($toH-$ftoH)/2,0,0,$ftoW,$ftoH);
}
else
{
ImageCopy($cImg,$proImg,0,0,0,0,$ftoW,$ftoH);
}
}
else
{
ImageCopyMerge($cImg,$this->im,($toW-$ftoW)/2,($toH-$ftoH)/2,0,0,$ftoW,$ftoH,100);
}
return $this->EchoImage($cImg,$toFile);
ImageDestroy($cImg);
}

function CreatImage($img,$creatW,$creatH,$dstX,$dstY,$srcX,$srcY,$srcImgW,$srcImgH)
{
if(function_exists("imagecreatetruecolor"))
{
@$creatImg = ImageCreateTrueColor($creatW,$creatH);
if($creatImg)
ImageCopyResampled($creatImg,$img,$dstX,$dstY,$srcX,$srcY,$creatW,$creatH,$srcImgW,$srcImgH);
else
{
$creatImg=ImageCreate($creatW,$creatH);
ImageCopyResized($creatImg,$img,$dstX,$dstY,$srcX,$srcY,$creatW,$creatH,$srcImgW,$srcImgH);
}
}
else
{
$creatImg=ImageCreate($creatW,$creatH);
ImageCopyResized($creatImg,$img,$dstX,$dstY,$srcX,$srcY,$creatW,$creatH,$srcImgW,$srcImgH);
}
return $creatImg;
}

//输出图片，link---只输出，不保存文件。file--保存为文件
function EchoImage($img,$to_File)
{
switch($this->echoType)
{
case "link":
if(function_exists('imagejpeg')) return ImageJpeg($img);
else return ImagePNG($img);
break;
case "file":
if(function_exists('imagejpeg')) return ImageJpeg($img,$to_File);
else return ImagePNG($img,$to_File);
break;
}
}

}
?>
<?
if ($_POST["action"]=="addnew") {
$pxname="";
if(!$_FILES['myphoto']['error']){
$f=$_FILES['myphoto'];
$kzm=strtolower(trim(substr($f['name'],-4)));
if($kzm!=".jpg" and $kzm!=".gif" and $kzm!=".png" and $kzm!=".bmp")
{
echo "<script>alert('图片格式不对!($kzm)');location.href='javascript:history.back()';</script>";
die;
}
$dest_dir='images';//设定上传目录
$pxname=date("ymdhis")."_"."s".substr($f['name'],-4);
$dest=$dest_dir.'/'.$pxname;//我这里设置文件名为日期加上文件名避免重复
$r=move_uploaded_file($f['tmp_name'],$dest);
chmod($dest, 0755);//设定上传的文件的属性
}

$cm=new CreatMiniature();
$cm->SetVar("images/".$pxname,"file");
$cm->Prorate("images/".$pxname,150,200);
}
?>

<?
//使用示例
//    include("thumb.php");
//    $cm=new CreatMiniature();
//    $cm->SetVar("1.jpg","file");
//    $cm->Distortion("dis_bei.jpg",150,200);
//    $cm->Prorate("pro_bei.jpg",150,200);
//    $cm->Cut("cut_bei.jpg",150,200);
//    $cm->BackFill("fill_bei.jpg",150,200);</p>
?>

<p>&nbsp;</p>
<p>&nbsp;</p>
<form name="form1" enctype="multipart/form-data" method="post" action="">
<input name="myphoto" type="file" id="myphoto">
<input type="submit" name="Submit" value="提交">
<input name="action" type="hidden" id="action" value="addnew">
</form>
<p>&nbsp;</p>

'swf' => 'application/x-shockwave-flash',
'js' => 'application/x-javascript',
'pdf' => 'application/pdf',
'ps' => 'application/postscript',
'eps' => 'application/postscript',
'ai' => 'application/postscript',
'wmf' => 'application/x-msmetafile',

'css' => 'text/css',
'htm' => 'text/html',
'html' => 'text/html',
'txt' => 'text/plain',
'xml' => 'text/xml',
'wml' => 'text/wml',
'wbmp' => 'image/vnd.wap.wbmp',

'mid' => 'audio/midi',
'wav' => 'audio/wav',
'mp3' => 'audio/mpeg',
'mp2' => 'audio/mpeg',

'avi' => 'video/x-msvideo',
'mpeg' => 'video/mpeg',
'mpg' => 'video/mpeg',
'qt' => 'video/quicktime',
'mov' => 'video/quicktime',

'lha' => 'application/x-lha',
'lzh' => 'application/x-lha',
'z' => 'application/x-compress',
'gtar' => 'application/x-gtar',
'gz' => 'application/x-gzip',
'gzip' => 'application/x-gzip',
'tgz' => 'application/x-gzip',
'tar' => 'application/x-tar',
'bz2' => 'application/bzip2',
'zip' => 'application/zip',
'arj' => 'application/x-arj',
'rar' => 'application/x-rar-compressed',

'hqx' => 'application/mac-binhex40',
'sit' => 'application/x-stuffit',
'bin' => 'application/x-macbinary',

'uu' => 'text/x-uuencode',
'uue' => 'text/x-uuencode',

'latex'=> 'application/x-latex',
'ltx' => 'application/x-latex',
'tcl' => 'application/x-tcl',

'pgp' => 'application/pgp',
'asc' => 'application/pgp',
'exe' => 'application/x-msdownload',
'doc' => 'application/msword',
'rtf' => 'application/rtf',
'xls' => 'application/vnd.ms-excel',
'ppt' => 'application/vnd.ms-powerpoint',
'mdb' => 'application/x-msaccess',
'wri' => 'application/x-mswrite',
);

<?php
/*
* 继承MyDd_MySql类.
*/
class MyDd_MySql extends DB_MYSQL {

/******************************
* 插入记录
* input parameter
: $table        => 表名
: $field    => 参数数组:$array['字段名'] = 值.
* out    parameter
: ture or false
******************************/
function InsertDB($table, $field){
$Afield = $this->metadata($table);
$Sql = "INSERT INTO `$table`";
foreach($field as $key=>$value){
$fields .= "`$key`,";
foreach($Afield as $fname){
if($fname['name']==$key){
$Ftyle = $fname['type'];
break;
}
}
if($Ftyle=="string"||$Ftyle=="blob"||$Ftyle=="date") $values.="'$value',";
else $values.="$value,";
}
$fields = substr($fields, 0, -1);
$values = substr($values, 0, -1);
$Sql .= " (".$fields.")";
$Sql .= " VALUES (".$values.")";
//die($Sql);
return $this->query($Sql);
}

/******************************
* 删除记录
* input parameter
: $table        => 表名
: $where        => 删除条件
* out    parameter
true or false
******************************/
function DeleteDB($table, $where='1') {
if(empty($table)) die("table is empty!");
$deleteSql = "DELETE FROM `$table` WHERE $where";
return $this->query($deleteSql);
}

/******************************
* 更新记录
* input parameter
: $table        => 表名
: $field    => 参数数组:$array['字段名'] = 值.
: $where        => 更新条件
* out    parameter
: ture or false
******************************/
function UpdateDB($table, $field, $where='1'){
$Afield = $this->metadata($table);
$Sql = "UPDATE `$table` SET";
if(is_array($field)){
foreach($field as $key => $var){
foreach($Afield as $fname){
if($fname['name']==$key){
if($fname['type']=="string"||$fname['type']=="blob"||$fname['type']=="date") $Sql.=" `$key`='$var',";
else $Sql.=" `$key`=$var,";
break;
}
}
}
$Sql = substr($Sql, 0, -1);
}else{
$Sql .= trim($field);
}
$Sql .= ' WHERE '.$where;
//die($Sql);
return $this->query($Sql);
}

/******************************
* 查询记录
* input parameter
: $table        => 表名
: $field        => 表字段
: $where        => 查询条件
: $order        => 排序方式
: $limit        => 显示数目
* out    parameter
: $array        => 信息数组(二维数组)
******************************/
function SelectDB($table, $field='', $where='', $order='', $limit=''){
$Sql = "select ";
if(is_array($field)){
foreach ($field as $key){
$felids .= "`$key`,";
}
$felids = substr($felids, 0, -1);
}else{
$felids = "*";
}
$Sql .= $felids." from `".$table."` where 1";
if($where != '') $Sql .= " and ".$where;
if($order != '') $Sql .= " order by ".$order;
if($limit != '') $Sql .= " limit ".$limit;
//die($Sql);
$result = $this->query($Sql);
$array = array();
while($row = $this->fetch_array($result)){
$array[] = $row;
}
return $array;
}

/******************************
* 统计数据总数
* input parameter
: $table            => 表名
* out    parameter
: $countArr['num']    => 返回条件数据总数
******************************/
function CountData($table, $where='') {
$countSql = "SELECT count(*) as num FROM $table";
$countSql .= ($where == '') ? '' : " WHERE $where";
$countResult = $this->query($countSql);
$countArr = $this->fetch_array($countResult);
//die($countArr['num']);
return $countArr['num'];
}

/******************************
* 分页
* input parameter
: $pageNum            => 每页显示记录数
: $table            => 表名
: $where            => 查询条件
* out    parameter
: $limit            => 返回用于第二次查询的SQL中的limit部分
******************************/
function LimitStr($table, $pageNum=10, $where='', $str='str', $view=true, $jump=true){
global $tpl;
//当前页码、每页显示数、开始记录
$page = is_numeric($_GET['page']) ? $_GET['page'] : 1;
if($page<1) $page = 1;
$start = ($page-1)*$pageNum;
$limit = "$start, $pageNum";
//记录总数
$total = $this->CountData($table, $where);
//分页字符串
$PageObj = new PAGE($total, $pageNum);
$pagestr = $PageObj->StartPage($str, $view, $jump);
$tpl->set_var("pagestr", $pagestr); //替换模板分页变量
//返回limt：$start,$pageNum
return $limit;
}

/*某一条记录*/
function RecordOne($table, $where='1', $field='*'){
$sql = 'select '.$field.' from '.$table.' where '.$where;
$this->query($sql);
$this->next_record();
return $this->Record;
}
/*获取最大ID号*/
function MaxID($table, $field='id'){
$sql = 'select MAX('.$field.') as MaxId from '.$table;
$this->query($sql);
$this->next_record();
return $this->Record['MaxId'];
}
/*记录集数组*/
function fetch_array($result){
return mysql_fetch_array($result, MYSQL_ASSOC);
}
/*设置数据库字符集*/
function SetNames($str){
mysql_query("set names '$str'", $this->Link_ID);
}
/*输出SQL语句，调试之用*/
function SQL($str){
die($str);
}

/*JS提示框*/
function forward($msg, $methd='', $url = ''){
$sStr = "<script language='javascript' type='text/javascript'>\n";
if($methd = 'href' && $url = '') die('forward funciton is wrong！');
$sStr .= "    alert('$msg!'); \n";
switch ($methd){
case "href":
$sStr .= " location.href='".$url."'; \n";
break;
case "close":
$sStr .= " self.close(); \n";
break;
default:
$sStr .= " history.go(-1); \n";
}
$sStr .= "</script>";
die($sStr);
}

}//class End
?>