圖片加水印縮略圖類

1、<?php/MyPic 圖片加水印, 生成縮略圖類/ 原始圖片$img1 = './image/test.jpg'/ 水印后的圖片$img2 = './image/test_new.jpg'/ 水印$water = './image/water.gif'$img = new image();/ 等比縮放$img->param($img1)->thumb('./image/test_0.jpg', 200,200,0);/ center center 裁剪$img->param($img1)->thum

2、b('./image/test_1.jpg', 200,200,1);/ top left 裁剪$img->param($img1)->thumb('./image/test_2.jpg', 200,200,2);/ 右下角添加水印$img->param($img1)->water($img2,$water,9);/* +-+* | Copyright (c) 2008-2009 Diqiye.Com All rights reserved.* +-+* | Info : 圖像處理類* +-+*/class image / 當前圖片 pr

3、otected $img; / 圖像types 對應表 protected $types = array( 1 => 'gif', 2 => 'jpg', 3 => 'png', 6 => 'bmp' ); / image public function _construct($img='') !$img && $this->param($img); / Info public function param($img) $this->img = $img; ret

4、urn $this; / imageInfo public function getImageInfo($img) $info = getimagesize($img); if(isset($this->types$info2) $info'ext' = $info'type' = $this->types$info2; else $info'ext' = $info'type' = 'jpg' $info'type' = 'jpg' && $info&#

5、39;type' = 'jpeg' $info'size' = filesize($img); return $info; / thumb(新圖地址, 寬, 高, 裁剪, 允許放大) public function thumb($filename,$new_w=160,$new_h=120,$cut=0,$big=0) / 獲取原圖信息 $info = $this->getImageInfo($this->img); if(!empty($info0) $old_w = $info0; $old_h = $info1; $type = $in

6、fo'type' $ext = $info'ext' unset($info); / 如果原圖比縮略圖小 并且不允許放大 if($old_w < $new_h && $old_h < $new_w && !$big) return false; / 裁剪圖片 if($cut = 0) / 等比列 $scale = min($new_w/$old_w, $new_h/$old_h); / 計算縮放比例 $width = (int)($old_w*$scale); / 縮略圖尺寸 $height = (int)($old_

7、h*$scale); $start_w = $start_h = 0; $end_w = $old_w; $end_h = $old_h; elseif($cut = 1) / center center 裁剪 $scale1 = round($new_w/$new_h,2); $scale2 = round($old_w/$old_h,2); if($scale1 > $scale2) $end_h = round($old_w/$scale1,2); $start_h = ($old_h-$end_h)/2; $start_w = 0; $end_w = $old_w; else $

8、end_w = round($old_h*$scale1,2); $start_w = ($old_w-$end_w)/2; $start_h = 0; $end_h = $old_h; $width = $new_w; $height= $new_h; elseif($cut = 2) / left top 裁剪 $scale1 = round($new_w/$new_h,2); $scale2 = round($old_w/$old_h,2); if($scale1 > $scale2) $end_h = round($old_w/$scale1,2); $end_w = $old_

9、w; else $end_w = round($old_h*$scale1,2); $end_h = $old_h; $start_w = 0; $start_h = 0; $width = $new_w; $height= $new_h; / 載入原圖 $createFun = 'ImageCreateFrom'.$type; $oldimg = $createFun($this->img); / 創(chuàng)建縮略圖 if($type!='gif' && function_exists('imagecreatetruecolor'

10、) $newimg = imagecreatetruecolor($width, $height); else $newimg = imagecreate($width, $height); / 復制圖片 if(function_exists("ImageCopyResampled") ImageCopyResampled($newimg, $oldimg, 0, 0, $start_w, $start_h, $width, $height, $end_w,$end_h); else ImageCopyResized($newimg, $oldimg, 0, 0, $sta

11、rt_w, $start_h, $width, $height, $end_w,$end_h); / 對jpeg圖形設置隔行掃描 $type = 'jpeg' && imageinterlace($newimg,1); / 生成圖片 $imageFun = 'image'.$type; !$imageFun($newimg,$filename) && die('保存失敗!檢查目錄是否存在并且可寫?'); ImageDestroy($newimg); ImageDestroy($oldimg); return $fi

12、lename; return false; / water(保存地址,水印圖片,水印位置,透明度) public function water($filename,$water,$pos=0,$pct=80) / 加載水印圖片 $info = $this->getImageInfo($water); if(!empty($info0) $water_w = $info0; $water_h = $info1; $type = $info'type' $fun = 'imagecreatefrom'.$type; $waterimg = $fun($wate

13、r); else return false; / 加載背景圖片 $info = $this->getImageInfo($this->img); if(!empty($info0) $old_w = $info0; $old_h = $info1; $type = $info'type' $fun = 'imagecreatefrom'.$type; $oldimg = $fun($this->img); else return false; / 剪切水印 $water_w >$old_w && $water_w = $o

14、ld_w; $water_h >$old_h && $water_h = $old_h; / 水印位置 switch($pos) case 0:/隨機 $posX = rand(0,($old_w - $water_w); $posY = rand(0,($old_h - $water_h); break; case 1:/1為頂端居左 $posX = 0; $posY = 0; break; case 2:/2為頂端居中 $posX = ($old_w - $water_w) / 2; $posY = 0; break; case 3:/3為頂端居右 $posX = $

15、old_w - $water_w; $posY = 0; break; case 4:/4為中部居左 $posX = 0; $posY = ($old_h - $water_h) / 2; break; case 5:/5為中部居中 $posX = ($old_w - $water_w) / 2; $posY = ($old_h - $water_h) / 2; break; case 6:/6為中部居右 $posX = $old_w - $water_w; $posY = ($old_h - $water_h) / 2; break; case 7:/7為底端居左 $posX = 0; $p

16、osY = $old_h - $water_h; break; case 8:/8為底端居中 $posX = ($old_w - $water_w) / 2; $posY = $old_h - $water_h; break; case 9:/9為底端居右 $posX = $old_w - $water_w; $posY = $old_h - $water_h; break; default: /隨機 $posX = rand(0,($old_w - $water_w); $posY = rand(0,($old_h - $water_h); break; / 設定圖像的混色模式 imagealphablending($oldimg, true); / 添加水印