1 && $ratio_h > 1)) {if($ratio_w < $ratio_h) {$ratio = $ratio_h ; // 情况一，宽度的比例比高度方向的小，按照高度的比例标准来裁剪或放大}else {$ratio = $ratio_w ;}// 定义一个中间的临时图像，该图像的宽高比 正好满足目标要求$inter_w=(int)($new_width / $ratio);$inter_h=(int) ($new_height / $ratio);$inter_img=imagecreatetruecolor($inter_w , $inter_h);imagecopy($inter_img, $src_img, 0,0,0,0,$inter_w,$inter_h);// 生成一个以最大边长度为大小的是目标图像$ratio比例的临时图像// 定义一个新的图像$new_img=imagecreatetruecolor($new_width,$new_height);imagecopyresampled($new_img,$inter_img,0,0,0,0,$new_width,$new_height,$inter_w,$inter_h);switch($type) {case IMAGETYPE_JPEG :imagejpeg($new_img, $dst_file,100); // 存储图像break;case IMAGETYPE_PNG :imagepng($new_img,$dst_file,100);break;case IMAGETYPE_GIF :imagegif($new_img,$dst_file,100);break;default:break;}} // end if 1// 2 目标图像 的一个边大于原图，一个边小于原图 ，先放大平普图像，然后裁剪// =if( ($ratio_w < 1 && $ratio_h > 1) || ($ratio_w >1 && $ratio_h <1) )else{$ratio=$ratio_h>$ratio_w? $ratio_h : $ratio_w; //取比例大的那个值// 定义一个中间的大图像，该图像的高或宽和目标图像相等，然后对原图放大$inter_w=(int)($w * $ratio);$inter_h=(int) ($h * $ratio);$inter_img=imagecreatetruecolor($inter_w , $inter_h);//将原图缩放比例后裁剪imagecopyresampled($inter_img,$src_img,0,0,0,0,$inter_w,$inter_h,$w,$h);// 定义一个新的图像$new_img=imagecreatetruecolor($new_width,$new_height);imagecopy($new_img, $inter_img, 0,0,0,0,$new_width,$new_height);switch($type) {case IMAGETYPE_JPEG :imagejpeg($new_img, $dst_file,100); // 存储图像break;case IMAGETYPE_PNG :imagepng($new_img,$dst_file,100);break;case IMAGETYPE_GIF :imagegif($new_img,$dst_file,100);break;default:break;}}// if3}// end function?> 第二个方法：
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) { $this->angle = 0; $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");?>