PHP 生成缩略图的类

1、PHPPHP 生成缩略图的类生成缩略图的类本文关键字：本文关键字：PHP 代码srcFile=$srcFile;$this-echoType=$echoType;$info = ;$data =http:/ ($data)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！返回;exit();$this-im = ImageCreateFromGIF($this-srcFile);&nb12345671234567 sp;break;case 2:if(!fu

2、nction_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！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);/生成扭曲型缩图function Distortion($toFile,$toW,$toH)$cI

3、mg=http:/ $this-EchoImage($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/$this-srcH;if($toWHsrcH/$this-src12345671234567 W);else$ftoH=$toH;$ftoW=$ftoH*($this-srcW/$this-srcH);if($this-srcW$toW|$this-srcH$toH)$cImg=http:/ $this-EchoI

4、mage($cImg,$toFile);ImageDestroy($cImg);else$cImg=http:/ $this-EchoImage($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/$this-srcH;if($toWHEchoImage($cImg,$toFile);ImageDestroy($cImg);ImageDestroy($allImg);/生成背景填充的缩图functionBackFill($to

5、File,$toW,$toH,$bk1=255,$bk2=255,$bk3=255)$toWH=$toW/$toH;$srcWH=$this-srcW/$this-srcH;if($toWHsrcH/$this-srcW);else$ftoH=$toH;$ftoW=$ftoH*($this-srcW/$this-srcH);if(function_exists(imagecreatetruecolor)$cImg=http:/ nbsp;$cImg=http:/ = imagecolorallocate($cImg, $bk1, $bk2,$bk3);/填充的背景颜色ImageFilledRe

6、ctangle($cImg,0,0,$toW,$toH,$backcolor);if($this-srcW$toW|$this-srcH$toH)$proImg=http:/ $this-EchoImage($cImg,$toFile);ImageDestroy($cImg);functionCreatImage($img,$creatW,$creatH,$dstX,$dstY,$srcX,$srcY,$srcImgW,$srcImgH)if(function_exists(imagecreatetruecolor)$creatImg =http:/ $creatImg;12345671234567/输出图片，link-只输出，不保存文件。file-保存为文件function EchoImage($img,$to_File)switch