php 图片操作类,支持生成缩略图,添加水印,上传缩略图
<?php
class Image { //类开始 public $originimage = ""; //源图片文件地址 public $imageext = ""; //源图片格式 public $thumbimage = ""; //缩略图文件存放地址 public $thumb_maxwidth = 1440; //缩略图最大宽度 public $thumb_maxheight = 900; //缩略图最大高度 public $watermark_text = ""; //水印文字内容 public $watermark_minwidth = 300; //源图片最小宽度:大于此值时加水印 public $watermark_minheight = 200; //源图片最小高度:大于此值时加水印 public $watermark_fontfile = ""; //字体文件 public $watermark_fontsize = 14; //字体大小 public $watermark_logo = "config/water.png"; //水印LOGO地址 public $watermark_transparent = 20; //水印LOGO不透明度 private $origin_width = 0; //源图片宽度 private $origin_height = 0; //源图片高度 private $imageQuilty = 90; //图片质量 private $tmp_originimage = ""; //临时图片(源图片) private $tmp_thumbimage = ""; //临时图片(缩略图) private $tmp_waterimage = ""; //临时图片(水印LOGO) private $_waterPosition = 2; //1正中间 2右下角 //生成缩略图 public function gen_thumbimage() { if ($this->originimage == "" || $this->thumbimage == "") { return 0; } $this->get_oriwidthheight (); if ($this->origin_width < $this->thumb_maxwidth && $this->origin_height < $this->thumb_maxheight) { $this->thumb_maxwidth = $this->origin_width; $this->thumb_maxheight = $this->origin_height; } else { if ($this->origin_width < $this->origin_height) { $this->thumb_maxwidth = ($this->thumb_maxheight / $this->origin_height) * $this->origin_width; } else { $this->thumb_maxheight = ($this->thumb_maxwidth / $this->origin_width) * $this->origin_height; } } $this->get_imagetype (); $this->gen_tmpimage_origin (); $this->gen_tmpimage_thumb (); if ($this->tmp_originimage == "" || $this->tmp_thumbimage == "") { return - 1; } imagecopyresampled ( $this->tmp_thumbimage, $this->tmp_originimage, 0, 0, 0, 0, $this->thumb_maxwidth,$this->thumb_maxheight, $this->origin_width, $this->origin_height ); switch ($this->imageext) { case "gif" : imagegif ( $this->tmp_thumbimage, $this->thumbimage ); return 1; break; case "jpg" : imagejpeg ( $this->tmp_thumbimage, $this->thumbimage, $this->imageQuilty ); return 2; break; case "png" : imagepng ( $this->tmp_thumbimage, $this->thumbimage ); return 3; break; default : return - 2; break; } } //添加文字水印 public function add_watermark1() { if ($this->originimage == "" || $this->watermark_text == "" || $this->watermark_fontfile == "") { return 0; } $this->get_oriwidthheight (); if ($this->origin_width < $this->watermark_minwidth || $this->origin_height < $this->watermark_minheight) { return 0; } $this->get_imagetype (); $this->gen_tmpimage_origin (); if ($this->tmp_originimage == "") { return - 1; } $textcolor = imagecolorallocate ( $this->tmp_originimage, 255, 0, 0 ); $angle = 0; $px = $this->origin_width / 2 - 200; $py = $this->origin_height / 2 - 10; imagettftext ( $this->tmp_originimage, $this->watermark_fontsize, $angle, $px, $py, $textcolor, $this->watermark_fontfile, $this->watermark_text ); switch ($this->imageext) { case "gif" : imagegif ( $this->tmp_originimage, $this->originimage ); return 1; break; case "jpg" : imagejpeg ( $this->tmp_originimage, $this->originimage, $this->imageQuilty ); return 2; break; case "png" : imagepng ( $this->tmp_originimage, $this->originimage ); return 3; break; default : return - 2; break; } } //添加LOGO水印 public function add_watermark2() { if ($this->originimage == "" || $this->watermark_logo == "") { return 0; } $this->get_oriwidthheight (); if ($this->origin_width < $this->watermark_minwidth || $this->origin_height < $this->watermark_minheight) { return 0; } $this->get_imagetype (); $this->gen_tmpimage_origin (); $this->gen_tmpimage_waterlogo (); if ($this->tmp_originimage == "" || $this->tmp_waterimage == "") { return - 1; } list ( $logo_width, $logo_height ) = getimagesize ( $this->watermark_logo ); //正中间 $waterZb = $this->waterPosition ( $logo_width, $logo_height ); $px = $waterZb ['x']; $py = $waterZb ['y']; imagecopymerge ( $this->tmp_originimage, $this->tmp_waterimage, $px, $py, 0, 0, $logo_width,$logo_height, $this->watermark_transparent ); switch ($this->imageext) { case "gif" : imagegif ( $this->tmp_originimage, $this->originimage ); return 1; break; case "jpg" : imagejpeg ( $this->tmp_originimage, $this->originimage, $this->imageQuilty ); return 2; break; case "png" : imagepng ( $this->tmp_originimage, $this->originimage ); return 3; break; default : return - 2; break; } } /** * 上传缩略图 * 注意上传文件大小限制 *@param String $files $_FILES['upload'] 类型 *@param String $path 存储的目录 默认在/static/attached/ *@param boolean $isWater 是否添加水印 * @return string $filePath 网页url图片路径 */ public function upload($files, $path, $isWater) { if (is_uploaded_file ( $files ['tmp_name'] )) { $upfile = $files; $name = $upfile [name]; $type = $upfile [type]; $size = $upfile [size]; $tmp_name = $upfile [tmp_name]; $error = $upfile [error]; if ($size > 1048576) { return array ('status' => false, 'message' => "$name图片太大超过1MB" ); } $rs = $this->getImageSize ( $tmp_name ); if (! $rs ['status']) { $rs ['message'] = $name . $rs ['message']; return $rs; } // 创建文件夹 $save_path = getcwd () . "/static/attached/" . $path . "/"; $save_url = "./static/attached/" . $path . "/"; $ym = date ( "Ym" ); $save_path .= $ym . "/"; $save_url .= $ym . "/"; if (! file_exists ( $save_path )) { mkdir ( $save_path ); } if ($error == '0') { $fileType = substr ( $name, strpos ( $name, "." ) + 1 ); $prefix = $this->getRandPrefix (); $newName = date ( "YmdHi" ) . $prefix . "." . $fileType; $filepath = $save_path . $newName; move_uploaded_file ( $tmp_name, $filepath ); } if ($isWater) { $this->water ( $filepath ); } return array ('status' => true, 'message' => $save_url . $newName ); } } /** * 图片增加水印处理 * @param unknown_type $image */ public function water($image) { $this->watermark_logo = ROOT . $this->watermark_logo; $this->originimage = $image; //LOGO水印 $this->add_watermark2 (); } /** * * 获取随机前缀 */ private function getRandPrefix() { $string = "abcdefghijklmnopqrstuvwxyz0123456789"; $prefix = ''; for($i = 0; $i < 4; $i ++) { $rand = rand ( 0, 33 ); $prefix .= $string {$rand}; } return $prefix; } //检测图片大小 private function getImageSize($image) { list ( $width, $height, $type, $attr ) = getimagesize ( $image ); if ($type != 2 && $type != 3) { return array ('status' => false, 'message' => "图片格式不正确,请上传JPG或者PNG图片" . $type ); } //检测图片大小 if ($width > 1440) { return array ('status' => false, 'message' => "图片宽度请小于1440px,当前为" . $width . "px" ); } if ($height > 900) { return array ('status' => false, 'message' => "图片高度请小于900px,当前为" . $height . "px" ); } return array ('status' => true ); } /** * 生成缩略图 * * @param String $imagefile 原始文件 * @param String $thumbWidth 缩略图宽度 * @param String $thumbHeight 缩略图高度 * @return String 缩略图url */ public function reduceImage($imagefile, $thumbWidth, $thumbHeight, $path = "thumb") { // 生成缩略图 $dir = date ( "Ym", time () ); $imagefile = ROOT . $imagefile; $imagefile_s = ROOT . "static/attached/" . $path . "/" . $dir . "/s_" . basename ( $imagefile ); $imagetrans = new Image (); $imagetrans->originimage = $imagefile; $imagetrans->thumbimage = $imagefile_s; $imagetrans->thumb_maxwidth = $thumbWidth; $imagetrans->thumb_maxheight = $thumbHeight; $isokid = $imagetrans->gen_thumbimage (); return "./static/attached/" . $path . "/" . $dir . "/s_" . basename ( $imagefile ); } /** * 水印位置 * @param int $logo_width * @param int $logo_height * @return 水印坐标 */ private function waterPosition($logo_width, $logo_height) { switch ($this->_waterPosition) { case 1 : $px = $this->origin_width / 2 - $logo_width / 2; $py = $this->origin_height / 2 - $logo_height / 2; break; case 2 : $px = $this->origin_width - $logo_width - 10; $py = $this->origin_height - $logo_height - 10; break; default : $px = $this->origin_width / 2 - $logo_width / 2; $py = $this->origin_height / 2 - $logo_height / 2; break; } return array ('x' => $px, 'y' => $py ); } //获取图片尺寸 private function get_oriwidthheight() { list ( $this->origin_width, $this->origin_height ) = getimagesize ( $this->originimage ); return 1; } /* * 检测图片格式 * 原方法需要开启exif 扩展 */ private function get_imagetype() { $ext = $this->getImgext ( $this->originimage ); switch ($ext) { case 1 : $this->imageext = "gif"; break; case 2 : $this->imageext = "jpg"; break; case 3 : $this->imageext = "png"; break; default : $this->imageext = "unknown"; break; } } //创建临时图片(源图片) private function gen_tmpimage_origin() { $ext = $this->getImgext ( $this->originimage ); switch ($ext) { case 1 : $this->tmp_originimage = imagecreatefromgif ( $this->originimage ); $bgcolor = imagecolorallocate ( $this->tmp_originimage, 0, 0, 0 ); $bgcolortrans = imagecolortransparent ( $this->tmp_originimage, $bgcolor ); break; case 2 : $this->tmp_originimage = imagecreatefromjpeg ( $this->originimage ); break; case 3 : $this->tmp_originimage = imagecreatefrompng ( $this->originimage ); imagesavealpha ( $this->tmp_originimage, true ); break; default : $this->tmp_originimage = ""; break; } } //创建临时图片(缩略图) private function gen_tmpimage_thumb() { $ext = $this->getImgext ( $this->originimage ); switch ($ext) { case 1 : $this->tmp_thumbimage = imagecreatetruecolor ( $this->thumb_maxwidth, $this->thumb_maxheight ); $bgcolor = imagecolorallocate ( $this->tmp_thumbimage, 255, 255, 255 ); imagefill ( $this->tmp_thumbimage, 0, 0, $bgcolor ); break; case 2 : $this->tmp_thumbimage = imagecreatetruecolor ( $this->thumb_maxwidth, $this->thumb_maxheight ); break; case 3 : $this->tmp_thumbimage = imagecreatetruecolor ( $this->thumb_maxwidth, $this->thumb_maxheight ); $bgcolor = imagecolorallocate ( $this->tmp_thumbimage, 255, 255, 255 ); imagefill ( $this->tmp_thumbimage, 0, 0, $bgcolor ); imagealphablending ( $this->tmp_thumbimage, false ); imagesavealpha ( $this->tmp_thumbimage, true ); break; default : $this->tmp_thumbimage = ""; break; } } //创建临时图片(LOGO水印) private function gen_tmpimage_waterlogo() { $ext = $this->getImgext ( $this->watermark_logo ); switch ($ext) { case 1 : $this->tmp_waterimage = imagecreatefromgif ( $this->watermark_logo ); $bgcolor = imagecolorallocate ( $this->tmp_waterimage, 0, 0, 0 ); $bgcolortrans = imagecolortransparent ( $this->tmp_waterimage, $bgcolor ); break; case 2 : $this->tmp_waterimage = imagecreatefromjpeg ( $this->watermark_logo ); break; case 3 : $this->tmp_waterimage = imagecreatefrompng ( $this->watermark_logo ); imagesavealpha ( $this->tmp_waterimage, true ); break; default : $this->tmp_waterimage = ""; break; } } /* * 获取后缀名 */ public function getImgext($filename) { return exif_imagetype ( $filename ); } //释放资源 public function __destruct() { if (is_object ( $this->tmp_originimage ) == true) { imagedestroy ( $this->tmp_originimage ); } if (is_object ( $this->tmp_thumbimage ) == true) { imagedestroy ( $this->tmp_thumbimage ); } if (is_object ( $this->tmp_waterimage ) == true) { imagedestroy ( $this->tmp_waterimage ); } }}php 图片操作类,支持生成缩略图,添加水印,上传缩略图的更多相关文章
- bootstrap-wysiwyg 结合 base64 解码 .net bbs 图片操作类
using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Dr ...
- 适用于各浏览器支持图片预览,无刷新异步上传js插件
文件上传无疑是web应用中一个非常常用的功能,不管是PHP.jsp还是aspx.mvc等都会需要文件上传,但是众所周知当使用自带的文件上传功能时总会出现页面刷新的情况.当然现在有了html5这个好东西 ...
- DedecmsV5.7本地上传缩略图无法自动添加水印的解决方法
问题:dedecms后台 系统->图片水印设置 图片水印设置有开启了,但是本地上传缩略图无法自动添加水印 网上有很多资料,所以记录一下 1.打开dede(实际项目后台文件夹)/archives_ ...
- javascript 图片上传缩略图预览
<html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="C ...
- Dedecms本地上传缩略图无法自动添加水印的解决方法
客户遇到一个问题,DEDECMS(V5.7)后台添加文档时,本地上传缩略图无法自动添加水印(系统设置里的图片水印设置没有问题),找了半天,终于找到了解决方法,留个记号: 打开dede/archives ...
- phpcms v9升级后台无法上传缩略图的原因分析
phpcms V9 是目前国内使用人数最多的一款开源免费的CMS系统,正是由于他的免费性,开源性,以及其自身的功能性比较强大,所以倍受许多站长朋友们的亲来,以及许多的公司的喜欢.phpcms也为了完善 ...
- web自动化测试难点 滚动条操作、日期框处理、上传文件
如何把页面滑到最低部? 一般来说,做web自动化测试时,不需要单独写代码,把页面滑到可见,因为click操作,只要是元素存在并且加载出来了,就可以点击到,无需另外写滑动元素的代码. 如果特殊情况需要滑 ...
- bootstrap-wysiwyg 结合 base64 解码 .net bbs 图片操作类 (二) 图片裁剪
图片裁剪参见: http://deepliquid.com/projects/Jcrop/demos.php?demo=thumbnail 一个js插件 http://www.mikes ...
- C#——图片操作类简单封装
using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Dr ...
随机推荐
- CheckBox全选、取消全选
关于CheckBox全选取消全选 //全选 $("#SysAllSelectedID").click(function () { $("[name=SysCheckbox ...
- 根据tomcat日志查找想要的错误日志
1.首先要记得程序报的错误信息 我的错误信息是[2015接收的参数中有空值],对应程序中的返回值是2015 以及出现错误信息的大致时间,我的大概是吃过午饭后,12:40-13:20之间 2.先去log ...
- 【小结】IIS7下的Http Native Module开发
今天接到Product Manager的通知,Exchange 2007环境下的Native Module不再需要开发(详情可见上篇),但最近几天一直在做Prototype,那就做一下小结吧,总结一下 ...
- nginx处理HTTP header问题
在实际开发中遇到http header 自定义key中包含下划线(_)时服务端header丢失的问题,解决办法详细见以下网页内容,感谢原博主 http://blog.csdn.net/dac55300 ...
- CEFSharp在anycpu下的编译
记录一篇博文,将CEFSharp在AnyCpu下使用: 地址:http://pengxiaobo123.blog.163.com/blog/static/20471515420172164593726 ...
- 洛谷 P3905 道路重建
题目描述 从前,在一个王国中,在n个城市间有m条道路连接,而且任意两个城市之间至多有一条道路直接相连.在经过一次严重的战争之后,有d条道路被破坏了.国王想要修复国家的道路系统,现在有两个重要城市A和B ...
- PHP : 数据库中int类型保存时间并通过年月份时分秒进行显示
1.表设计: 2.数据库操作页面:将时间戳插入到数据库中 我们到数据库中可以看到: 3.我们将数据进行显示: 页面结果:(二维数组) 4.以为用mysqli_fetch_all得到的是二维数组,那么我 ...
- TeXstudio安装后提示no LaTeX distribution found on this system
应该是设置一下用户变量,而非系统变量,用TeXLive 2015和MikTeX都不好使,最后设置了用户变量好使了 S:\TeX\MiKTeX 2.9\miktex\bin\x64\ 也是醉醉的 不过等 ...
- 【JavaScript 封装库】BETA 5.0 测试版发布!
JavaScript 前端框架(封装库) BETA 5.0 已于10月10日正式发布,今天开始提供 BETA 5.0 的 API 参考文献.相较于之前 5 个版本的发布都是草草的提供源代码,并没有很多 ...
- 委托代码func和Action的基本用法
这是微软简化后的委托写法,其中,func适合带返回参数的方法调用,action适合没有返回参数的方法调用 FUNC方法代码: public string GetPeopleInfo(string na ...