- <?php
- /**
- * 来源：互联网
- */
- class image
- {
- var $w_pct = 100; //透明度
- var $w_quality = 100; //质量
- var $w_minwidth = 500; //最小宽
- var $w_minheight = 500; //最小高
- var $interlace = 0; //图像是否为隔行扫描的
- var $fontfile ; //字体文件
- var $w_img ; //默认水印图
-
- function __construct()
- {
- $this->fontfile = $_SERVER['DOCUMENT_ROOT'].'/public/fonts/simhei.ttf';
- $this->w_img = '';
- }
- function image()
- {
- $this->__construct();
- }
-
- function info($img)
- {
- $imageinfo = getimagesize($img); //返回图像信息数组 0=>宽的像素 1=>高的像素 2=>是图像类型的标记 3 =>是文本字符串，内容为“height="yyy" width="xxx"”，
- if($imageinfo === false) return false;
- $imagetype = strtolower(substr(image_type_to_extension($imageinfo[2]),1)); //获取图像文件类型 $imageinfo[2]是图像类型的标记
- $imagesize = filesize($img); //图像大小
- $info = array(
- 'width'=>$imageinfo[0],
- 'height'=>$imageinfo[1],
- 'type'=>$imagetype,
- 'size'=>$imagesize,
- 'mime'=>$imageinfo['mime']
- );
- return $info;
- }
-
- /**
- * 缩略图
- *
- * @param string $image
- * @param string $filename
- * @param int $maxwidth
- * @param int $maxheight
- * @param string $suffix
- * @param int $autocut
- * @return string
- */
- function thumb($image, $filename = '',$maxwidth = 50, $maxheight = 50, $suffix='_thumb', $autocut = 0)
- {
- if( !$this->check($image)) return false;
- $info = $this->info($image); //获取图片信息
- if($info === false) return false;
- $srcwidth = $info['width']; //源图宽
- $srcheight = $info['height']; //源图高
- $pathinfo = pathinfo($image);
- $type = $pathinfo['extension']; //取得扩展名
- if(!$type) $type = $info['type']; //如果没有取到，用$info['type']
- $type = strtolower($type);
- unset($info);
- $scale = min($maxwidth/$srcwidth, $maxheight/$srcheight); //获取缩略比例
- //获取按照源图的比列
- $createwidth = $width = (int) ($srcwidth*$scale);//取得缩略宽();
- $createheight = $height = (int)($srcheight*$scale);//(); //取得缩略高
- $psrc_x = $psrc_y = 0;
- if($autocut) //按照缩略图的比例来获取
- {
- if($maxwidth/$maxheight<$srcwidth/$srcheight && $maxheight>=$height) //如果缩略图按比列比源图窄的话
- {
- $width = $maxheight/$height*$width; //宽按照相应比例做处理
- $height = $maxheight;// //高不变
- }
- elseif($maxwidth/$maxheight>$srcwidth/$srcheight && $maxwidth>=$width)//如果缩略图按比列比源图宽的话
- {
- $height = $maxwidth/$width*$height;//
- $width = $maxwidth;
- }
- if($maxwidth == '55'){
- $width = '55';
- $createwidth = '55';
- }
- if($maxwidth == '110'){
- $width = '110';
- $createwidth = '110';
- }
-
- }
- if($srcwidth<='280' && $maxwidth != '110'){
- $createwidth= $srcwidth;
- $createheight = $srcheight;
- }
- $createfun = 'imagecreatefrom'.($type=='jpg' ? 'jpeg' : $type); //找到不同的图像处理函数
- $srcimg = $createfun($image); //返回图像标识符
- if($type != 'gif' && function_exists('imagecreatetruecolor')){
- $thumbimg = imagecreatetruecolor($createwidth, $createheight); //新建一个真彩色图像
- }else{
- if($maxwidth == '110' && $srcheight >= $srcwidth){
- $height1 = 72;
- $thumbimg = imagecreate($width, $height1); //新建一个基于调色板的图像
- }elseif ($maxwidth == '110' && $srcheight <= $srcwidth){
- $width1 = 110;
- $thumbimg = imagecreate($width1, $height); //新建一个基于调色板的图像
- }else{
- $thumbimg = imagecreate($width, $height); //新建一个基于调色板的图像
- }
- }
- if(function_exists('imagecopyresampled')){ //重采样拷贝部分图像并调整大小，真彩
- //imagecopyresampled(新图，源图,新图左上角x距离,新图左上角y距离,源图左上角x距离,源图左上角y距离,新图宽,新图高,源图宽,源图高)
- if($maxwidth == '110' && $srcheight >= $srcwidth){
- $psrc_x = 0;
- $psrc_yz = $height/2;
- $psrc_y = $psrc_yz;
- $width = '110';
- }
- if($maxwidth == '110' && $srcheight >= $srcwidth && $srcheight>= '72' && $srcwidth <= '110'){
- $psrc_x = 0;
- $psrc_yz = $height/2;
- $psrc_y = $psrc_yz;
- $width = '110';
- }
- if($maxheight == '72' && $srcheight <= $srcwidth && $srcheight<= '72' && $srcwidth >= '110'){
- $cha = ($maxheight-$srcheight)/2;
- $psrc_y = -($cha);
- $width = $srcwidth;
- $height = '72';
- $srcheight = '72';
- }
- imagecopyresampled($thumbimg, $srcimg, 0, 0, $psrc_x, $psrc_y, $width, $height, $srcwidth, $srcheight);
-
- }else{ //拷贝部分图像并调整大小，调色板
- imagecopyresized($thumbimg, $srcimg, 0, 0, $psrc_x, $psrc_y, $width, $height, $srcwidth, $srcheight);
- }
- if($type=='gif' || $type=='png')
- {
- //imagecolorallocate 为一幅图像分配颜色
- $background_color = imagecolorallocate($thumbimg, 0, 255, 0); // 给基于调色板的图像填充背景色， 指派一个绿色
- // imagecolortransparent 将某个颜色定义为透明色
- imagecolortransparent($thumbimg, $background_color); // 设置为透明色，若注释掉该行则输出绿色的图
- }
- // imageinterlace 激活或禁止隔行扫描
- if($type=='jpg' || $type=='jpeg') imageinterlace($thumbimg, $this->interlace);
- $imagefun = 'image'.($type=='jpg' ? 'jpeg' : $type);
- //imagejpeg imagegif imagepng
- if(empty($filename)) $filename = substr($image, 0, strrpos($image, '.')).$suffix.'.'.$type; //获取文件名
- //aaa.gif aaa_thumb.gif
- $imagefun($thumbimg, $filename); //新建图像
- imagedestroy($thumbimg); //销毁缩略图
- imagedestroy($srcimg); //销毁源图
- return $filename;
- }
- /**
- * 限制宽或高
- *
- * @param string $image
- * @param int $maxwidth
- * @param int $maxheight
- * @param string $suffix
- * @return string
- */
- function thumb3($image,$maxwidth = 0, $maxheight = 0, $suffix='_thumb')
- {
- if( !$this->check($image)) return false;
- $info = $this->info($image); //获取图片信息
- if($info === false) return false;
- $srcwidth = $info['width']; //源图宽
- $srcheight = $info['height']; //源图高
- $pathinfo = pathinfo($image);
- $type = $pathinfo['extension']; //取得扩展名
- if(!$type) $type = $info['type']; //如果没有取到，用$info['type']
- $type = strtolower($type);
- unset($info);
- if($maxwidth==0){
- $scale = $maxheight/$srcheight;
- if($scale<1){
- $createwidth = $srcwidth*$scale;
- $createheight = $maxheight;
- }else{
- $createwidth = $srcwidth;
- $createheight = $srcheight;
- }
- }
- if($maxheight==0){
- $scale = $maxwidth/$srcwidth;
- if($scale<1){
- $createwidth = $maxwidth;
- $createheight = $srcheight*$scale;
- }else{
- $createwidth = $srcwidth;
- $createheight = $srcheight;
- }
- }
- $psrc_x = $psrc_y = 0;
- $createfun = 'imagecreatefrom'.($type=='jpg' ? 'jpeg' : $type); //找到不同的图像处理函数
- $srcimg = $createfun($image); //返回图像标识符
- if($type != 'gif' && function_exists('imagecreatetruecolor')){
- $thumbimg = imagecreatetruecolor($createwidth, $createheight); //新建一个真彩色图像
- }else{
- $thumbimg = imagecreate($createwidth, $createheight); //新建一个基于调色板的图像
- }
- if(function_exists('imagecopyresampled')){ //重采样拷贝部分图像并调整大小，真彩
- //imagecopyresampled(新图，源图,新图左上角x距离,新图左上角y距离,源图左上角x距离,源图左上角y距离,新图宽,新图高,源图宽,源图高)
- imagecopyresampled($thumbimg, $srcimg, 0, 0, $psrc_x, $psrc_y, $createwidth, $createheight, $srcwidth, $srcheight);
-
- }else{ //拷贝部分图像并调整大小，调色板
- imagecopyresized($thumbimg, $srcimg, 0, 0, $psrc_x, $psrc_y, $createwidth, $createheight, $srcwidth, $srcheight);
- }
- if($type=='gif' || $type=='png')
- {
- //imagecolorallocate 为一幅图像分配颜色
- $background_color = imagecolorallocate($thumbimg, 0, 255, 0); // 给基于调色板的图像填充背景色， 指派一个绿色
- // imagecolortransparent 将某个颜色定义为透明色
- imagecolortransparent($thumbimg, $background_color); // 设置为透明色，若注释掉该行则输出绿色的图
- }
- // imageinterlace 激活或禁止隔行扫描
- if($type=='jpg' || $type=='jpeg') imageinterlace($thumbimg, $this->interlace);
- $imagefun = 'image'.($type=='jpg' ? 'jpeg' : $type);
- //imagejpeg imagegif imagepng
- $filename = substr($image, 0, strrpos($image, '.')).$suffix.'.'.$type; //获取文件名
- //aaa.gif aaa_thumb.gif
- $imagefun($thumbimg, $filename); //新建图像
- imagedestroy($thumbimg); //销毁缩略图
- imagedestroy($srcimg); //销毁源图
- return $filename;
- }
- /**
- * 生成特定尺寸缩略图 解决原版缩略图不能满足特定尺寸的问题 PS：会裁掉图片不符合缩略图比例的部分
- * @static
- * @access public
- * @param string $image 原图
- * @param string $type 图像格式
- * @param string $thumbname 缩略图文件名
- * @param string $maxWidth 宽度
- * @param string $maxHeight 高度
- * @param boolean $interlace 启用隔行扫描
- * @return void
- */
- static function thumb2($image, $thumbname, $type='', $maxWidth=200, $maxHeight=50, $interlace=true) {
- // 获取原图信息
- $info = Image::getImageInfo($image);
- if ($info !== false) {
- $srcWidth = $info['width'];
- $srcHeight = $info['height'];
- $type = empty($type) ? $info['type'] : $type;
- $type = strtolower($type);
- $interlace = $interlace ? 1 : 0;
- unset($info);
- $scale = max($maxWidth / $srcWidth, $maxHeight / $srcHeight); // 计算缩放比例
- //判断原图和缩略图比例 如原图宽于缩略图则裁掉两边 反之..
- if($maxWidth / $srcWidth > $maxHeight / $srcHeight){
- //高于
- $srcX = 0;
- $srcY = ($srcHeight - $maxHeight / $scale) / 2 ;
- $cutWidth = $srcWidth;
- $cutHeight = $maxHeight / $scale;
- }else{
- //宽于
- $srcX = ($srcWidth - $maxWidth / $scale) / 2;
- $srcY = 0;
- $cutWidth = $maxWidth / $scale;
- $cutHeight = $srcHeight;
- }
-
- // 载入原图
- $createFun = 'ImageCreateFrom' . ($type == 'jpg' ? 'jpeg' : $type);
- $srcImg = $createFun($image);
-
- //创建缩略图
- if ($type != 'gif' && function_exists('imagecreatetruecolor'))
- $thumbImg = imagecreatetruecolor($maxWidth, $maxHeight);
- else
- $thumbImg = imagecreate($maxWidth, $maxHeight);
-
- // 复制图片
- if (function_exists("ImageCopyResampled"))
- imagecopyresampled($thumbImg, $srcImg, 0, 0, $srcX, $srcY, $maxWidth, $maxHeight, $cutWidth, $cutHeight);
- else
- imagecopyresized($thumbImg, $srcImg, 0, 0, $srcX, $srcY, $maxWidth, $maxHeight, $cutWidth, $cutHeight);
- if ('gif' == $type || 'png' == $type) {
- //imagealphablending($thumbImg, false);//取消默认的混色模式
- //imagesavealpha($thumbImg,true);//设定保存完整的 alpha 通道信息
- $background_color = imagecolorallocate($thumbImg, 0, 255, 0); // 指派一个绿色
- imagecolortransparent($thumbImg, $background_color); // 设置为透明色，若注释掉该行则输出绿色的图
- }
-
- // 对jpeg图形设置隔行扫描
- if ('jpg' == $type || 'jpeg' == $type)
- imageinterlace($thumbImg, $interlace);
-
- // 生成图片
- $imageFun = 'image' . ($type == 'jpg' ? 'jpeg' : $type);
- @chmod(dirname($thumbname),0777);
- $imageFun($thumbImg, $thumbname);
- imagedestroy($thumbImg);
- imagedestroy($srcImg);
- return $thumbname;
- }
- return false;
- }
-
-
- /**
- * 取得图像信息
- * @static
- * @access public
- * @param string $image 图像文件名
- * @return mixed
- */
-
- static function getImageInfo($img) {
- $imageInfo = getimagesize($img);
- if ($imageInfo !== false) {
- $imageType = strtolower(substr(image_type_to_extension($imageInfo[2]), 1));
- $imageSize = filesize($img);
- $info = array(
- "width" => $imageInfo[0],
- "height" => $imageInfo[1],
- "type" => $imageType,
- "size" => $imageSize,
- "mime" => $imageInfo['mime']
- );
- return $info;
- } else {
- return false;
- }
- }
-
- //watermark(源图,生成文件,生成位置,水印文件,水印文本,背景色)
- function watermark($source, $target = '', $w_pos = 9, $w_img = '', $w_text = '', $w_font = 12, $w_color = '#cccccc',$x='',$y='')
- {
- if( !$this->check($source)) return false;
- if(!$target) $target = $source;
- if ($w_img == '' && $w_text == '')
- $w_img = $this->w_img;
- $source_info = getimagesize($source);
- $source_w = $source_info[0]; //获取宽
- $source_h = $source_info[1]; //获取高
- if($source_w < $this->w_minwidth || $source_h < $this->w_minheight) return false; //宽和高达不到要求直接返回
- switch($source_info[2]) //新建图片
- {
- case 1 :
- $source_img = imagecreatefromgif($source);
- break;
- case 2 :
- $source_img = imagecreatefromjpeg($source);
- break;
- case 3 :
- $source_img = imagecreatefrompng($source);
- break;
- default :
- return false;
- }
- if(!empty($w_img) && file_exists($w_img)) //水印文件
- {
- $ifwaterimage = 1; //是否水印图
- $water_info = getimagesize($w_img); //水印信息
- $width = $water_info[0];
- $height = $water_info[1];
-
- switch($water_info[2])
- {
- case 1 :
- $water_img = imagecreatefromgif($w_img);
-
- break;
- case 2 :
- $water_img = imagecreatefromjpeg($w_img);
- break;
- case 3 :
- $water_img = imagecreatefrompng($w_img);
-
- break;
- default :
- return;
- }
- }
- else
- {
- $ifwaterimage = 0;
- //imagettfbbox 本函数计算并返回一个包围着 TrueType 文本范围的虚拟方框的像素大小。
- //imagettfbbox ( 字体大小, 字体角度, 字体文件,文件 )
- // echo $this->fontfile;
- $temp = imagettfbbox(ceil($w_font*1.6), 0, $this->fontfile, $w_text);//取得使用 truetype 字体的文本的范围
- $width = $temp[4] - $temp[6]; //右上角 X 位置 - 左上角 X 位置
- $height = $temp[3] - $temp[5]; //右下角 Y 位置- 右上角 Y 位置
- unset($temp);
- }
- switch($w_pos)
- {
- case 0: //随机位置
- $wx = rand(0,($source_w - $width));
- $wy = rand(0,($source_h - $height));
- break;
- case 1: //左上角
- $wx = 25;
- $wy = 25;
- break;
- case 2: //上面中间位置
- $wx = ($source_w - $width) / 2;
- $wy = 0;
- break;
- case 3: //右上角
- $wx = $source_w - $width;
- $wy = 0;
- break;
- case 4: //左面中间位置
- $wx = 0;
- $wy = ($source_h - $height) / 2;
- break;
- case 5: //中间位置
- $wx = ($source_w - $width) / 2;
- $wy = ($source_h - $height) / 2;
- break;
- case 6: //底部中间位置
- $wx = ($source_w - $width) / 2;
- $wy = $source_h - $height;
- break;
- case 7: //左下角
- $wx = 0;
- $wy = $source_h - $height;
- break;
- case 8: //右面中间位置
- $wx = $source_w - $width;
- $wy = ($source_h - $height) /2;
- break;
- case 9: //右下角
- $wx = $source_w - $width;
- $wy = $source_h - $height ;
- break;
- default: //随机
- $wx = rand(0,($source_w - $width));
- $wy = rand(0,($source_h - $height));
- break;
- case 10://自定义位置
- $wx = $x;
- $wy = $y;
- case 11: //底部中间位置--手工客专用
- $wx = ($source_w - $width) / 2;
- $wy = $source_h - $height-50;
- break;
- break;
- }
- if($ifwaterimage) //如果有水印图
- {
-
- //imagecopymerge 拷贝并合并图像的一部分
- //参数(源图,水印图,拷贝到源图x位置,拷贝到源图y位置,从水印图x位置,从水印图y位置,高,宽,透明度)
- //imagecopymerge($source_img, $water_img, $wx, $wy, 0, 0, $width, $height, $this->w_pct);
-
- imagecopy($source_img,$water_img,$wx,$wy,0,0,$width,$height);
- }
- else
- {
- if(!empty($w_color) && (strlen($w_color)==7))
- {
- $r = hexdec(substr($w_color,1,2)); //获取红色
- $g = hexdec(substr($w_color,3,2)); //获取绿色
- $b = hexdec(substr($w_color,5)); //获取蓝色
- }
- else
- {
- return;
- }
- //imagecolorallocate 基于调色板的图像填充背景色
- //imagestring 水平地画一行字符串
- //imagestring(源图,字体大小,位置X,位置Y,文字,颜色)
- //参数($image, float $size, float $angle, int $x, int $y, int $color, string $fontfile, string $text)
- imagettftext($source_img,$w_font,0,$wx,$wy,imagecolorallocate($source_img,$r,$g,$b),$this->fontfile,$w_text);
- //imagestring($source_img,$w_font,$wx,$wy,$w_text,imagecolorallocate($source_img,$r,$g,$b));
- }
-
- //输出到文件或者浏览器
- switch($source_info[2])
- {
- case 1 :
- imagegif($source_img, $target); //以 GIF 格式将图像输出到浏览器或文件
- break;
- case 2 :
- imagejpeg($source_img, $target, $this->w_quality); //以 JPEG 格式将图像输出到浏览器或文件
- break;
- case 3 :
- imagepng($source_img, $target); //以 PNG 格式将图像输出到浏览器或文件
- break;
- default :
- return;
- }
- if(isset($water_info))
- {
- unset($water_info); //销毁
- }
- if(isset($water_img))
- {
- imagedestroy($water_img); //销毁
- }
- unset($source_info);
- imagedestroy($source_img);
- return true;
- }
- //gd库必须存在，后缀为jpg|jpeg|gif|png，文件存在，imagecreatefromjpeg或者imagecreatefromgif存在
- function check($image)
- {
- return extension_loaded('gd') &&
- preg_match("/\.(JPG|JPEG|PNG|GIF|jpg|jpeg|gif|png)/i", $image, $m) &&
- file_exists($image) &&
- function_exists('imagecreatefrom'.($m[1] == 'jpg' ? 'jpeg' : $m[1]));
- //imagecreatefromjpeg
- //imagecreatefromgif
- //imagecreatefrompng
- }
- }
-
- /**
- 缩略图
- 1.新建一个图像资源 通过 imagecreatefromgif imagecreatefromjpeg imagecreatefrompng
- 2.imagecopyresampled 拷贝图像，并调整大小
-
- 水印：图片水印，文字水印
- 1. 创建图像
- 2.加水印
- 图片水印：imagecopymerge 把2张图合并在一起
- 文字水印：imagettftext 向图像写入文字
-
-
- */
- error_reporting(0);
- $hostdir = dirname(__FILE__);
- $filesnames = scandir($hostdir.'/desktop');
- $img = new image();
- foreach($filesnames as $name){
- if($name != '.' && $name != '..'){
- $imgPath = $hostdir.'/desktop/';
- $imgsize = getimagesize($imgPath.$name);
- $imgInfo = explode('.',$name);
- $imginfo2 = explode('_',$imgInfo[0]);
- if($imginfo2[count($imginfo2)-1] != 'small'){
- $img_small = $imgPath.$imgInfo[0].'_small.'.$imgInfo[1];
- $img->thumb2($imgPath.$name,$img_small,'',$imgsize[0]/4,$imgsize[1]/4);
- }
- }
- }
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