PHP图片处理类：支持（缩略，裁剪，圆角，倾斜）

图片处理类：缩略，裁剪，圆角，倾斜

<?  /*      图片处理类：缩略，裁剪，圆角，倾斜  */  class resizeimage  {     //图片类型     var $type;     //实际宽度     var $width;     //实际高度     var $height;     //改变后的宽度     var $resize_width;     //改变后的高度     var $resize_height;     //是否裁图     var $cut;     //源图象     var $srcimg;     //目标图象地址     var $dstimg;     //圆角源     var $corner;     var $im;     function resizeimage($img, $corner, $wid, $hei,$c, $corner_radius, $angle)     {         $this->srcimg = $img;             $this->corner = $corner;         $this->resize_width = $wid;         $this->resize_height = $hei;         $this->cut = $c;             $this->corner_radius = $corner_radius;             $this->angle = $angle;         //图片的类型         $this->type = substr(strrchr($this->srcimg,"."),1);         //初始化图象         $this->initi_img();         //目标图象地址         $this -> dst_img();         //--         $this->width = imagesx($this->im);         $this->height = imagesy($this->im);         //生成图象         $this->newimg();         ImageDestroy ($this->im);     }     function newimg()     {         //改变后的图象的比例         $resize_ratio = ($this->resize_width)/($this->resize_height);         //实际图象的比例         $ratio = ($this->width)/($this->height);         if(($this->cut)=="1")         //裁图         {             if($ratio>=$resize_ratio)             //高度优先             {                 $newimg = imagecreatetruecolor($this->resize_width,$this->resize_height);                 imagecopyresampled($newimg, $this->im, 0, 0, 0, 0, $this->resize_width,$this->resize_height, (($this->height)*$resize_ratio), $this->height);                             $tmp = $this->rounded_corner($newimg,$this->resize_width);                 imagepng ($tmp,$this->dstimg);             }             if($ratio<$resize_ratio)             //宽度优先             {                 $newimg = imagecreatetruecolor($this->resize_width,$this->resize_height);                 imagecopyresampled($newimg, $this->im, 0, 0, 0, 0, $this->resize_width, $this->resize_height, $this->width, (($this->width)/$resize_ratio));                             $tmp = $this->rounded_corner($newimg);                 imagepng ($tmp,$this->dstimg);             }         }         else         //不裁图         {             if($ratio>=$resize_ratio)             {                 $newimg = imagecreatetruecolor($this->resize_width,($this->resize_width)/$ratio);                 imagecopyresampled($newimg, $this->im, 0, 0, 0, 0, $this->resize_width, ($this->resize_width)/$ratio, $this->width, $this->height);                 ImageJpeg ($newimg,$this->dstimg);             }             if($ratio<$resize_ratio)             {                 $newimg = imagecreatetruecolor(($this->resize_height)*$ratio,$this->resize_height);                 imagecopyresampled($newimg, $this->im, 0, 0, 0, 0, ($this->resize_height)*$ratio, $this->resize_height, $this->width, $this->height);                 ImageJpeg ($newimg,$this->dstimg);             }         }     }     //初始化图象     function initi_img()     {         if($this->type=="jpg")         {             $this->im = imagecreatefromjpeg($this->srcimg);         }         if($this->type=="gif")         {             $this->im = imagecreatefromgif($this->srcimg);         }         if($this->type=="png")         {             $this->im = imagecreatefrompng($this->srcimg);         }     }        //处理圆角     function rounded_corner($image,$size)     {                  $topleft = true;                  $bottomleft = true;                  $bottomright = true;                  $topright = true;                  $corner_source = imagecreatefrompng('rounded_corner.png');                  $corner_width = imagesx($corner_source);                    $corner_height = imagesy($corner_source);                    $corner_resized = ImageCreateTrueColor($this->corner_radius, $this->corner_radius);                  ImageCopyResampled($corner_resized, $corner_source, 0, 0, 0, 0, $this->corner_radius, $this->corner_radius, $corner_width, $corner_height);                  $corner_width = imagesx($corner_resized);                    $corner_height = imagesy($corner_resized);                    $white = ImageColorAllocate($image,255,255,255);                  $black = ImageColorAllocate($image,0,0,0);                     //顶部左圆角                  if ($topleft == true) {                          $dest_x = 0;                            $dest_y = 0;                            imagecolortransparent($corner_resized, $black);                           imagecopymerge($image, $corner_resized, $dest_x, $dest_y, 0, 0, $corner_width, $corner_height, 100);                  }                      //下部左圆角                  if ($bottomleft == true) {                          $dest_x = 0;                            $dest_y = $size - $corner_height;                           $rotated = imagerotate($corner_resized, 90, 0);                          imagecolortransparent($rotated, $black);                           imagecopymerge($image, $rotated, $dest_x, $dest_y, 0, 0, $corner_width, $corner_height, 100);                    }                     //下部右圆角                  if ($bottomright == true) {                          $dest_x = $size - $corner_width;                            $dest_y = $size - $corner_height;                            $rotated = imagerotate($corner_resized, 180, 0);                          imagecolortransparent($rotated, $black);                           imagecopymerge($image, $rotated, $dest_x, $dest_y, 0, 0, $corner_width, $corner_height, 100);                    }                     //顶部右圆角                  if ($topright == true) {                          $dest_x = $size - $corner_width;                            $dest_y = 0;                          $rotated = imagerotate($corner_resized, 270, 0);                          imagecolortransparent($rotated, $black);                           imagecopymerge($image, $rotated, $dest_x, $dest_y, 0, 0, $corner_width, $corner_height, 100);                    }                  $image = imagerotate($image, $this->angle, $white);                  return $image;      }        //图象目标地址     function dst_img()     {         $full_length = strlen($this->srcimg);         $type_length = strlen($this->type);         $name_length = $full_length-$type_length;         $name         = substr($this->srcimg,0,$name_length-1);         $this->dstimg = $name."_small.png";     }  }     //resizeimage("图片地址", "处理后的宽度", "处理后的高度", "是否裁剪", "圆角度数", "倾斜度");  $img_file = 'Sunset.jpg';  $corner = 'rounded_corner.png';  $resizeimage = new resizeimage($img_file, $corner, "80", "80", "1", "6", "0");  ?>  <img src="Sunset_small.png" border="0">