<?php class ThumbWaterImages{ /** * 生成缩略图/加水印 * classname ThumbWaterImages * datetime:2015-1-15 * author:chenpz * * usuage: * $th=new ThumbWaterImages(array(\'imagePre\'=>\'example\', \'imagePath\'=>\'./uploads/thumb/\', \'echoType\'=>\'file\')); * $th->setThumb($srcImage, 384, 300, \'prorate\'); */ private $imagepre; //缩略图名称前缀 private $imagepath; //缩略图存放路径 private $srcImage=\'\'; //源图路径 private $newImageName; //缩略图名称 private $imageType; //图片类型 private $echotype; //输出图片类型，link--直接输出到浏览器；file--保存为文件 private $im=\'\'; //临时变量 private $originName=\'\'; //源图名称 private $srcW=\'\'; //源图宽 private $srcH=\'\'; //源图高 private $errorNum=0; //错误号 private $errorMess=\'\'; //用来提供错误报告 /** * 初始化 * @access public * @param array * @return void */ public function __construct($options = array()){ $allowOption = array(\'imagepre\',\'imagepath\',\'echotype\'); foreach($options as $key=>$val){ $key = strtolower($key); //验证成员属性 if(!in_array($key, $allowOption)){ $this->errorNum = -3; $this->errorMess = $this->getError(); continue; } $this->$key = $val; } } /** * * 判断源文件路径、缩略图存放路径是否正确 * 判断GD库是否支持缩略图格式 * 初始化图片高宽、缩略图存放路径、缩略图生成方式 * * @access public * @param string $srcImage * @param int $toW * @param int $toH * @param string $method * prorate 按比例缩放/distortion 扭曲型缩图/cut 最小裁剪后的缩图/backFill 背景填充图 * @param string $echotype */ public function setThumb($srcImage = \'\', $toW = 0, $toH = 0, $method = \'distortion\'){ $this->srcImage = $srcImage; $imageName = explode(\'/\', $this->srcImage); $this->originName = $imageName[2]; //检查源文件是否存在 if(empty($srcImage) || filetype($srcImage) != \'file\'){ $this->errorNum = 4; $this->errorMess = $this->getError(); return false; } //检查文件上传路径 if ($this->echotype == \'file\'){ if(!$this->checkImagePath()){ $this->errorMess = $this->getError(); return false; } } $info = \'\'; $data = getimagesize($this->srcImage, $info);//获取图像大小 $this->srcW = $data[0];//宽 $this->srcH = $data[1];//高 //检查GD库 if(!$this->checkGD($data[2])){ $this->errorMess = $this->getError(); return false; } $this->setImageName();//设置缩略图名称 $toFile = $this->imagepath.$this->newImageName;//缩略图存放路径 $return = $this->createImageMethod($method, $toFile, $toW, $toH); return $return; } /** * * 初始化缩略图生成方式 * prorate 按比例缩放 * distortion 扭曲型缩图 * cut 最小裁剪后的缩图 * backFill 背景填充图 * @param string $method * @param string $toFile * @param int $toW * @param int $toH */ private function createImageMethod($method, $toFile, $toW, $toH){ switch ($method){ case \'prorate\': $return = $this->prorate($toFile, $toW, $toH); break; case \'cut\': $return = $this->cut($toFile, $toW, $toH); break; case \'backFill\': $return = $this->backFill($toFile, $toW, $toH); break; default: $return = $this->distortion($toFile, $toW, $toH); } return $return; } //生成扭曲型缩图 function distortion($toFile=\'\', $toW=0, $toH=0){ $cImg=$this->creatImage($this->im, $toW, $toH, 0, 0, 0, 0, $this->srcW, $this->srcH); return $this->echoImage($cImg, $toFile); imagedestroy($cImg); } //生成按比例缩放的缩图 function prorate($toFile, $toW, $toH){ $toWH = $toW / $toH; $srcWH = $this->srcW / $this->srcH; if($toWH <= $srcWH){ $ftoW = $toW; $ftoH = $ftoW * ($this->srcH / $this->srcW); }else{ $ftoH = $toH; $ftoW = $ftoH * ($this->srcW / $this->srcH); } if($this->srcW > $toW || $this->srcH > $toH){ $cImg = $this->creatImage($this->im, $ftoW, $ftoH, 0, 0, 0, 0, $this->srcW, $this->srcH); return $this->echoImage($cImg, $toFile); imagedestroy($cImg); }else{ $cImg = $this->creatImage($this->im, $this->srcW, $this->srcH, 0, 0, 0, 0, $this->srcW, $this->srcH); return $this->echoImage($cImg, $toFile); imagedestroy($cImg); } } //生成最小裁剪后的缩图 private function cut($toFile, $toW, $toH){ $toWH = $toW/$toH; $srcWH = $this->srcW / $this->srcH; if($toWH <= $srcWH){ $ctoH = $toH; $ctoW = $ctoH * ($this->srcW / $this->srcH); }else{ $ctoW = $toW; $ctoH = $ctoW * ($this->srcH / $this->srcW); } $allImg = $this->creatImage($this->im, $ctoW, $ctoH, 0, 0, 0, 0, $this->srcW, $this->srcH); $cImg = $this->creatImage($allImg, $toW, $toH, 0, 0, ($ctoW-$toW) / 2, ($ctoH-$toH) / 2, $toW, $toH); return $this->echoImage($cImg, $toFile); imagedestroy($cImg); imagedestroy($allImg); } //生成背景填充的缩图 private function backFill($toFile, $toW, $toH, $bk1=255, $bk2=255, $bk3=255){ $toWH = $toW / $toH; $srcWH = $this->srcW / $this->srcH; if($toWH <= $srcWH){ $ftoW = $toW; $ftoH = $ftoW * ($this->srcH / $this->srcW); }else{ $ftoH = $toH; $ftoW = $ftoH*($this->srcW / $this->srcH); } if(function_exists("imagecreatetruecolor")){ @$cImg = imagecreatetruecolor($toW,$toH); if(!$cImg){ $cImg = imagecreate($toW,$toH); } }else{ $cImg = imagecreate($toW,$toH); } $backcolor = imagecolorallocate($cImg, $bk1, $bk2, $bk3); //填充的背景颜色 imagefilledrectangle($cImg,0,0,$toW,$toH,$backcolor); if($this->srcW > $toW || $this->srcH > $toH){ $proImg = $this->creatImage($this->im,$ftoW,$ftoH,0,0,0,0,$this->srcW,$this->srcH); if($ftoW < $toW){ imagecopy($cImg, $proImg, ($toW - $ftoW) / 2, 0, 0, 0, $ftoW, $ftoH); }else if($ftoH < $toH){ imagecopy($cImg, $proImg, 0, ($toH-$ftoH) / 2, 0, 0, $ftoW, $ftoH); }else{ imagecopy($cImg, $proImg, 0, 0, 0, 0, $ftoW, $ftoH); } }else{ imagecopymerge($cImg, $this->im, ($toW - $ftoW) / 2,($toH - $ftoH) / 2, 0, 0, $ftoW, $ftoH, 100); } return $this->echoImage($cImg, $toFile); imagedestroy($cImg); } //创建图像 private function creatImage($img, $creatW, $creatH, $dstX, $dstY, $srcX, $srcY, $srcImgW, $srcImgH){ if(function_exists("imagecreatetruecolor")){ @$creatImg = imagecreatetruecolor($creatW, $creatH); if($creatImg){ imagecopyresampled($creatImg, $img, $dstX, $dstY, $srcX, $srcY, $creatW, $creatH, $srcImgW, $srcImgH); }else{ $creatImg=imagecreate($creatW,$creatH); imagecopyresized($creatImg, $img, $dstX, $dstY, $srcX, $srcY, $creatW, $creatH, $srcImgW, $srcImgH); } }else{ $creatImg=imagecreate($creatW, $creatH); imagecopyresized($creatImg, $img, $dstX, $dstY, $srcX, $srcY, $creatW, $creatH, $srcImgW, $srcImgH); } return $creatImg; } //输出图片，link---只输出，不保存文件。file--保存为文件 function echoImage($img, $toFile){ switch($this->echotype){ case \'link\': if(function_exists(\'imagejpeg\')) return imagejpeg($img); else return imagepng($img); break; case \'file\': if(function_exists(\'imagejpeg\')) return imagejpeg($img,$toFile); else return imagepng($img,$toFile); break; } } /** * * 设置随机文件名称 * @access private * @return string */ private function setRandName(){ $fileName = date("YmdHis").rand(100,999); return $fileName.\'.\'.$this->imageType; } private function setImageName(){ if ($this->imagepre != \'\'){ $this->newImageName = $this->imagepre.\'_\'.$this->setRandName(); }else { $this->newImageName = $this->setRandName(); } } /** * * 用来检查文件上传路径 * @access private * @return bool */ private function checkImagePath(){ if(empty($this->imagepath)) { $this->errorNum = -2; return false; } if(!file_exists($this->imagepath) || !is_writable($this->imagepath)){ if(!@mkdir($this->imagepath, 0755,true)){ $this->errorNum = -1; return false; } } return true; } private function checkGD($imageType){ switch ($imageType){ case 1: if(!function_exists("imagecreatefromgif")){ $this->errorNum = 1; return false; } $this->imageType = \'gif\'; $this->im = imagecreatefromgif($this->srcImage); break; case 2: if(!function_exists("imagecreatefromjpeg")){ $this->errorNum = 2; return false; } $this->imageType = \'jpg\'; $this->im = imagecreatefromjpeg($this->srcImage); break; case 3: if(!function_exists("imagecreatefrompng")){ $this->errorNum = 3; return false; } $this->imageType = \'png\'; $this->im = imagecreatefrompng($this->srcImage); break; default: $this->errorNum = 0; return false; } return true; } /** * * 用于获取上传后缩略图片的文件名 * @access public * @return string */ public function getNewImageName(){ return $this->newImageName; } /** * * 获取上传错误信息 * @access private * @return string */ private function getError(){ $str=\'生成缩略图<font color="red">\'.$this->originName.\'</font>时出错：\'; switch($this->errorNum){ case 4: $str .= \'没有找到需要缩略的图片\'; break; case 3: $str .= \'你的GD库不能使用png格式的图片，请使用其它格式的图片！\'; break; case 2: $str .= \'你的GD库不能使用jpeg格式的图片，请使用其它格式的图片！\'; break; case 1: $str .= \'你的GD库不能使用GIF格式的图片，请使用Jpeg或PNG格式！\'; break; case -1: $str .= \'建立存放缩略图目录失败，请重新指定缩略图目录\'; break; case -2: $str .= \'必须指定缩略图的路径\'; break; case -3: $str .= \'初始化参数出错\'; break; default: $str .= \'末知错误\'; } return $str.\'<br>\'; } public function getErrorMsg() { return $this->errorMess; } /* * 功能：PHP图片水印 (水印支持图片或文字) * 参数： * $groundImage 背景图片，即需要加水印的图片，暂只支持GIF,JPG,PNG格式； * $waterPos 水印位置，有10种状态，0为随机位置； * 1为顶端居左，2为顶端居中，3为顶端居右； * 4为中部居左，5为中部居中，6为中部居右； * 7为底端居左，8为底端居中，9为底端居右； * $waterImage 图片水印，即作为水印的图片，暂只支持GIF,JPG,PNG格式； * $waterText 文字水印，即把文字作为为水印，支持ASCII码，不支持中文； * $textFont 文字大小，值为1、2、3、4或5，默认为5； * $textColor 文字颜色，值为十六进制颜色值，默认为#FF0000(红色)； * * 注意：Support GD 2.0，Support FreeType、GIF Read、GIF Create、JPG 、PNG * $waterImage 和 $waterText ***不要同时使用，选其中之一即可，优先使用 $waterImage。 * 当$waterImage有效时，参数$waterString、$stringFont、$stringColor均不生效。 * 加水印后的图片的文件名和 $groundImage 一样。 */ public function imageWaterMark($groundImage,$waterPos=0,$waterImage="",$waterText="",$textFont=5,$textColor="#FF0000") { $isWaterImage = FALSE; $formatMsg = "暂不支持该文件格式，请用图片处理软件将图片转换为GIF、JPG、PNG格式。"; //读取水印文件 if(!empty($waterImage) && file_exists($waterImage)) { $isWaterImage = TRUE; $water_info = getimagesize($waterImage); $water_w = $water_info[0];//取得水印图片的宽 $water_h = $water_info[1];//取得水印图片的高 switch($water_info[2])//取得水印图片的格式 { case 1:$water_im = imagecreatefromgif($waterImage);break; case 2:$water_im = imagecreatefromjpeg($waterImage);break; case 3:$water_im = imagecreatefrompng($waterImage);break; default: return false;//die($formatMsg); } } //读取背景图片 if(!empty($groundImage) && file_exists($groundImage)) { $ground_info = getimagesize($groundImage); $ground_w = $ground_info[0];//取得背景图片的宽 $ground_h = $ground_info[1];//取得背景图片的高 switch($ground_info[2])//取得背景图片的格式 { case 1:$ground_im = imagecreatefromgif($groundImage);break; case 2:$ground_im = imagecreatefromjpeg($groundImage);break; case 3:$ground_im = imagecreatefrompng($groundImage);break; default:return false;//die($formatMsg); } } else { return false; //die("需要加水印的图片不存在！"); } //水印位置 if($isWaterImage)//图片水印 { $w = $water_w; $h = $water_h; $label = "图片的"; } else//文字水印 { $temp = imagettfbbox(ceil($textFont*2.5),0,"./fonts/Eras_Bold_ITC.otf",$waterText);//取得使用 TrueType 字体的文本的范围 $w = $temp[2] - $temp[6]; $h = $temp[3] - $temp[7]; unset($temp); $label = "文字区域"; } if( ($ground_w<$w) || ($ground_h<$h) ) { //echo "需要加水印的图片的长度或宽度比水印".$label."还小，无法生成水印！"; return; } switch($waterPos) { case 0://随机 $posX = rand(0,($ground_w - $w)); $posY = rand(0,($ground_h - $h)); break; case 1://1为顶端居左 $posX = 0; $posY = 0; break; case 2://2为顶端居中 $posX = ($ground_w - $w) / 2; $posY = 0; break; case 3://3为顶端居右 $posX = $ground_w - $w; $posY = 0; break; case 4://4为中部居左 $posX = 0; $posY = ($ground_h - $h) / 2; break; case 5://5为中部居中 $posX = ($ground_w - $w) / 2; $posY = ($ground_h - $h) / 2; break; case 6://6为中部居右 $posX = $ground_w - $w; $posY = ($ground_h - $h) / 2; break; case 7://7为底端居左 $posX = 0; $posY = $ground_h - $h; break; case 8://8为底端居中 $posX = ($ground_w - $w) / 2; $posY = $ground_h - $h; break; case 9://9为底端居右 $posX = $ground_w - $w; $posY = $ground_h - $h; break; default://随机 //$posX = rand(0,($ground_w - $w)); //$posY = rand(0,($ground_h - $h)); $posX = 5; $posY = 55; break; } //设定图像的混色模式 imagealphablending($ground_im, true); if($isWaterImage)//图片水印 { imagecopy($ground_im, $water_im, $posX, $posY, 0, 0, $water_w,$water_h);//拷贝水印到目标文件 } else//文字水印 { if( !empty($textColor) && (strlen($textColor)==7) ) { $R = hexdec(substr($textColor,1,2)); $G = hexdec(substr($textColor,3,2)); $B = hexdec(substr($textColor,5)); } else { return false; //die("水印文字颜色格式不正确！"); } imagestring ( $ground_im, $textFont, $posX, $posY, $waterText, imagecolorallocate($ground_im, $R, $G, $B)); } //生成水印后的图片 @unlink($groundImage); switch($ground_info[2])//取得背景图片的格式 { case 1:imagegif($ground_im,$groundImage);break; case 2:imagejpeg($ground_im,$groundImage);break; case 3:imagepng($ground_im,$groundImage);break; default:return false;//die($errorMsg); } //释放内存 if(isset($water_info)) unset($water_info); if(isset($water_im)) imagedestroy($water_im); unset($ground_info); imagedestroy($ground_im); } /** * 图片大小比例调整 * * @param $filename 图片路径 * @param $w 目标宽度 * @param $h 目标高度 * @param $override 是否覆盖原文件 * @param $background 是否产生背景, 如果要求产生背景则产生图像是指定的大小， 图片内容居中 * @param $color 背影色 */ public function RatioAdjuct($filename = \'\', $w = 440, $h = 300, $override = null, $background = null, $color = \'0xFFFFFF\') { list( $imgWidth, $imgHeight ) = getImageSize ( $filename ); $ratioX = $imgWidth / $w; $ratioY = $imgHeight / $h; if ($ratioX > $ratioY || $ratioX == $ratioY) { $dst_w = $w; $dst_h = ceil ( $imgHeight / $ratioX ); } else if ($ratioY > $ratioX) { $dst_h = $h; $dst_w = ceil ( $imgWidth / $ratioY ); } //判断图片类型 switch (strtolower ( strrchr ( $filename, \'.\' ) )) { case \'.jpg\' : case \'.jpeg\' : $im = imageCreateFromJpeg ( $filename ); break; case \'.gif\' : $im = imageCreateFromGif ( $filename ); break; case \'.png\' : $im = imageCreateFromPng ( $filename ); } //是否有背景色 if (null !== $background) { //将背景色转换为十进制的红绿蓝值 $dec = hexdec ( $color ); $red = 0xFF & ($dec >> 0x10); $green = 0xFF & ($dec >> 0x8); $blue = 0xFF & $dec; //居中定位并复制 $dst_pos = array (\'d_x\' => 0, \'d_y\' => 0 ); ($dst_w == $w) ? ($dst_pos [\'d_y\'] = (($h - $dst_h) / 2)) : ($dst_pos [\'d_x\'] = (($w - $dst_w) / 2)); $imBox = imageCreateTrueColor ( $w, $h ); $color_bg = imageColorAllocate ( $imBox, $red, $green, $blue ); imageFill ( $imBox, 0, 0, $color_bg ); imageCopyResized ( $imBox, $im, $dst_pos [\'d_x\'], $dst_pos [\'d_y\'], 0, 0, $dst_w, $dst_h, $imgWidth, $imgHeight ); } else { $imBox = imageCreateTrueColor ( $dst_w, $dst_h ); imageCopyResized ( $imBox, $im, 0, 0, 0, 0, $dst_w, $dst_h, $imgWidth, $imgHeight ); } //不替换源图片 if (null === $override) $filename = str_replace ( strrchr ( $filename, \'.\' ), \'\', $filename ) . \'_thumb.png\'; return imagejpeg ( $imBox, $filename ) ? $filename : false; } } $th=new ThumbImages(array(\'imagePre\'=>\'xxs\', \'imagePath\'=>\'./uploads/thumb/\', \'echoType\'=>\'file\')); $th->imageWaterMark(\'1034035813_x.jpg\', 6, \'sy_small.png\'); $th->setThumb(\'1034035813_x.jpg\', 400, 400, \'cut\');