php生成圖片縮圖程式碼類

產生多種類型的縮圖

/***************************************
*作者：落夢天蠍（beluckly）
*完成時間：2006-12-18
*類別名稱：CreatMiniature
*功能：產生多種類型的縮圖
*基本參數：$srcFile,$echoType
*方法用到的參數：
 $toFile,產生的檔案
 $toW,產生的寬
 $toH,產生的高
 $bk1,背景顏色參數以255為最高
 $bk2,背景顏色參數
 $bk3,背景顏色參數

*範例：

 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);

***** **********************************/

class CreatMiniature
{
 //公共變數
 var $ srcFile=""; //原圖
 var $echoType; //輸出圖片類型，link--不儲存為檔案；file--儲存為檔案
 var $im=""; //暫存變數
 var $srcW=""; //原圖寬
 var $srcH=""; //原圖高

 //設定變數與初始化
 function SetVar($srcFile ,$echoType)
 {
 $this->srcFile=$srcFile;
 $this->echoType=$echoType;

 $info = "";
 $data = GetImageSize($this->srcFile,$info);
 switch ($data[2])
 {
 case 1:
 if(!function_exists("imagecreatefrom")){
 echo "你的GD庫不能使用GIF格式的圖片，請使用Jpeg或PNG格式！返回";
 exit();
 }
 $this->im = ImageCreateFromGIF($this->srcFile);
 break;
 case 2:
 if(!function_exists("imagecreatefromjpeg"){首選項";
 exit(); ;
 鍵;
 鍵3:
 $this->im = ImageCreateFromPNG($this->srcFile); $this->im);
 $this->srcH=ImageSY($this->im); ,$toW,$toH​​ )
 {
 $cImg=$this->CreateImage($this->im,$toW,$toH​​,0, 0,0,0,$this->srcW,$this->srcH);
回傳$this -> EchoImage ( $ cImg , $ toFile ); 屬性函數Prorate($toFile,$toW,$toH​​)
 {
 $toWH=$toW/$toH;
 $srcWH=$this-> srcW/ $this->srcH;
 if($toWH {
$ftoW=$toW;
$ftoH=$ftoW*( $this->srcH/$ this-> srcW ); > }
 if ( $this -> srcW > $toW || $this -> srcH > $toH )
 {
 $cImg = $ this -> CreateImage ( $this -> im , $ftoW , $ftoH , 0 0 , 0 , 0 , $ this -> srcW , $ this -> srcH ) ;
 }
 else

 $cImg=$ this->CreateImage($this->im,$this->srcW,$this->srcH,0,0,0,0; ​​, $this->srcW , $this-> srcH ); / 傳回輸入檔案的金鑰
 function Cut($ toFile,$toW,$toH​​ )
 {
 $toWH=$toW/$toH;
 $ srcWH =$this- >srcW/$this->srcH;
 if($至WH9 =$srcWH)
 {
 $ctoH=$toH;
 $ctoW=$ctoH*( $this ->srcW/ $this->srcH);
}
else
{
$ctoW=$toW;
$ctoH=$ctoW*($this->srcH/ $this - > srcW ) ; this - > srcH ); /2, $toW, $toH );
 return $this ->EchoImage($cImg,$toFile); }

 // 安裝預設檔
返回BackFill($toFile,$toW,$toH​​,$bk1=255,$bk2=255,$bk3=255)
 {
 $toWH=$toW/$toH;
$srcWH =$this->srcW/$this->srcH;
 if($toWH {
 $ftoW=$toW;
$ftoH=$ ftoW*($this ->srcH/$this->srcW)
 $ftoW=$ftoH*($this->; srcW/$this->srcH);
 }
 if(function_exists("createTrueColorImage"))
 {
 @$cImg=CreateTrueColorImage($toW,$ ); if ( !$cImg)
 {
$cImg=CreateImage($toW,$toH​​); ($toW ,$toH​​於);
 }
 $backcolor = imageColorAllocate ($cImg, $bk1) , $bk2, $bk3);        //公共配置規範
 ImageFilledRectangle($cImg,0,0,$toW,$toH​​,$backcolor);
 if($this->srcW>$toW||$this->srcH > ;$ toH)
 {
 $proImg=$this->CreateImage($this->im,$ftoW,$ftoH,0,0,0,0,$this->srcW,$this-> srcH ) , $ftoW , $ftoH , 100 ); / 2 , 0 , 0 , $ftoW , $ftoH , 100 ); ); $cImg, $proImg, 0,($toH-$ftoH)/2,0, 0,$ftoW,$ftoH); $proImg , 0 , 0 , 0 , $ ftoW , $ ftoH ); ftoW)/2,($toH-$ftoH)/2,0,0,$ftoW,$ftoH, 100);
 return $this->EchoImage($cImg,$toFile);
 ImageDestroy($cImg);
 }

 function CreatImage($img,$creatW,$creatH,$stX ,$dstY,$srcX,$srcY,$srcImgW,$srcImgH)
 {
 if(function_exists("imagecreatetruecolor"))
 {
 @$creatImg = ImageCreate. );
 if($creatImg)
 ImageCopyResampled($creatImg,$img,$dstX,$dstY,$srcX,$srcY,$creatW,$creatH,$srcImgW,$srcX,$srcY,$creatW,$creatH,$srcImgW,$srcImgH);
 {
 $creatImg=ImageCreate($creatW,$creatH);
 ImageCopyResized($creatImg,$img,$dstX,$dstY,$srcX,$srcY,$creatW,$creatH,$creatW$4,$,$creatW$Y,$creatW$4,$ ,$srcImgH);
 }
 }
 else
 {
 $creatImg=ImageCreate($creatW,$creatH);
 ImageCopyResized($creatImg,$3,$ $dstY,$srcX,$srcY,$creatW,$creatH,$srcImgW,$srcImgH);
 }
 return $creatImg;
 }

 // 輸出圖片，連結圖片，連結圖片，連結連結--只輸出，不儲存檔案。 "link":
 if(function_exists('imagejpeg')) return ImageJpeg($img);
 else return ImagePNG($img);
 ;
 case "file":break
 if(function_exists('imagejpeg')) return ImageJpeg($img,$to_File);
 else return ImagePNG($img,$to_File);
 中斷;
 }
 }
 }
 🎜>}
?>


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