PHP產生縮圖的類_PHP教程

php代碼

/**

* 功能:產生縮圖

* 作者:phpox

* 日期:Thu May 17 09:57:05 CST 2007

*/

class CreatMiniature

{

//公開變數

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=""; //臨時變數

var $srcW=""; //原圖寬

var $srcH=""; //原圖高

//設定變數及初始化

function SetVar($srcFile,$echoType)

{

if (!file_exists($srcFile)){

echo 源圖片檔案不存在!;

exit();

}

$this->srcFile=$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")){

echo "你的GD庫不能使用jpeg格式的圖片，請使用其它格式的圖片！返回";

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);

}

//產生扭曲型縮圖

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);

}

//產生按比例縮放的縮圖

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);

}

}

//產生最小裁剪後的縮圖

function Cut($toFile,$toW,$toH)

{

$toWH=$toW/$toH;

$srcWH=$this->srcW/$this-&g

http://www.bkjia.com/PHPjc/478786.htmlwww.bkjia.comtruehttp://www.bkjia.com/PHPjc/478786.htmlTechArticlephp代碼 ?php /** * 功能:產生縮圖 * 作者:phpox * 日期:Thu May 17 09:57:05 CST 2007 */ class CreatMiniature { //公開變數 var $srcFile=""; //原圖 var $echoType; /...

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