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PHP上传、生成缩略图、生成文字水印和图片水印
网络 2013/9/24 22:11:39<?php /* '-##########################################-| '| 上传+生成缩略图+生成文字水印和图片水印 | '| 可以直接引用 | '-##########################################-| */ //审明图片文件夹 $bigfolder="img"; $smallfolder="smallimg"; //审明文件夹名称 以年月日来建议文件夹 $fdate=date("Ymd"); //echo $fdate; //审明文件名称。以年月日时分秒命名 $fname=date("YmdHis"); $bigname="0724e_com_".$fname; $smallname="0724e_com_".$fname."_s"; //echo $fname."<br/>".$bigname."<br/>".$smallname; //确定大小文件夹的名称和路经 $bigaddrname=$bigfolder."/".$fdate."/".$bigname; $smalladdrname=$smallfolder."/".$fdate."/".$smallname; //审明小图片的高度和宽度 $RESIZEWIDTH=180; $RESIZEHEIGHT=150; //审明水印的文字或图片的地址及字体的地址 $imgaddr="img.jpg"; //图片水印 $fontname="www.0724e.com"; //文字水印 //充许上传的文件扩展名 $exit_name=array(".jpg",".gif",".png"); if (isset($_POST['Submit'])){ //上传部分---------------------------- //定议上传名称和上传错误 $upfile=$_FILES['image']['name']; $uperror=$_FILES['image']['error']; //最简表单验证 switch ($uperror) { case 1: die("<div align=\"center\">上传真过PHP设置充许的最大值<a href=\"javascript:history.back();\">点击返回</a></div>"); break; case 2: die("<div align=\"center\">上传超过了表单充许的最大值<a href=\"javascript:history.back();\">点击返回</a></div>"); break; case 3: die("<div align=\"center\">文件只有部分被上传了<a href=\"javascript:history.back();\">点击返回</a></div>"); break; case 4: die("<div align=\"center\">文件不有被上传<a href=\"javascript:history.back();\">点击返回</a></div>"); break; } //检测扩展是否是充许上传的文件类型 //取得文件扩展名 $exname=strrchr($upfile,"."); //判断取得扩展名是否在要求的扩展名内 if(!in_array($exname,$exit_name)) die("<div align=\"center\">文件扩展名不对。只允许上传jpg gif png的图片<a href=\"javascript:history.back();\">点击返回</a></div>"); //检测存放图片的目录和子目录是否存在，如果不存在则建目录和子目录，并给目录最大权限777 对LINUX或unix对WINDOWS没必要 //大图 if (!file_exists($bigfolder)){ mkdir($bigfolder,0777); mkdir($bigfolder."/".$fdate,0777); }else{ if (!file_exists($bigfolder."/".$fdate)){ mkdir($bigfolder."/".$fdate,0777); } } //缩略图 if (!file_exists($smallfolder)){ mkdir($smallfolder,0777); mkdir($smallfolder."/".$fdate,0777); }else{ if (!file_exists($smallfolder."/".$fdate)){ mkdir($smallfolder."/".$fdate,0777); } } //创建目录结束 //得到临时上传的文件 $upfiletmp=$_FILES['image']['tmp_name']; //判断临时文件是否存在 if ($uperror==6) die("<div align=\"center\">找不到临时上传文件，上传失败<a href=\"javascript:history.back();\">点击返回</a></div>"); //水印部分========================================== //水印函数开始============ /** $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； * $textColor 文字颜色，值为十六进制颜色值，默认为#FF0000(红色)； * */ function imageWaterMark($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: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:die($formatMsg); } } else { die("需要加水印的图片不存在！"); } //水印位置 if($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,"./cour.ttf",$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 - $h)); break; } //设定图像的混色模式 imagealphablending($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 { 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,$groundImage);break; default:die($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); } //水印函数完 //存在则移动完在上传 $goodupfile=@move_uploaded_file($upfiletmp,$bigaddrname.$exname); if (!$goodupfile){ die("<div align=\"center\">上传图片失败<a href=\"javascript:history.back();\">点击返回</a></div>"); }else{ //文字水印 imageWaterMark($bigaddrname.$exname,5,"",$fontname,5,"#FF0000"); //图片水印 //imageWaterMark($bigaddrname.$exname,5,$imgaddr); //结束水印部分=================================== //缩略图部分------------------------------------------------------------ //判断缩略图大小函数----- function ResizeImage($im,$maxwidth,$maxheight,$name){ $width = imagesx($im); $height = imagesy($im); if(($maxwidth && $width > $maxwidth) || ($maxheight && $height > $maxheight)){ if($maxwidth && $width > $maxwidth){ $widthratio = $maxwidth/$width; $RESIZEWIDTH=true; } if($maxheight && $height > $maxheight){ $heightratio = $maxheight/$height; $RESIZEHEIGHT=true; } if($RESIZEWIDTH && $RESIZEHEIGHT){ if($widthratio < $heightratio){ $ratio = $widthratio; }else{ $ratio = $heightratio; } }elseif($RESIZEWIDTH){ $ratio = $widthratio; }elseif($RESIZEHEIGHT){ $ratio = $heightratio; } $newwidth = $width * $ratio; $newheight = $height * $ratio; if(function_exists("imagecopyresampled")){ $newim = imagecreatetruecolor($newwidth, $newheight); imagecopyresampled($newim, $im, 0, 0, 0, 0, $newwidth, $newheight, $width, $height); }else{ $newim = imagecreate($newwidth, $newheight); imagecopyresized($newim, $im, 0, 0, 0, 0, $newwidth, $newheight, $width, $height); } ImageJpeg ($newim,$smalladdrname.$name.".jpg"); ImageDestroy ($newim); }else{ ImageJpeg ($im,$smalladdrname.$name.".jpg"); } } //生成部分 if($_FILES['image']['size']){ if($_FILES['image']['type'] == "image/pjpeg"){ $im = imagecreatefromjpeg($bigaddrname.$exname); }elseif($_FILES['image']['type'] == "image/x-png"){ $im = imagecreatefrompng($bigaddrname.$exname); }elseif($_FILES['image']['type'] == "image/gif"){ $im = imagecreatefromgif($bigaddrname.$exname); } if($im){ if(file_exists($smalladdrname.".jpg")){ unlink($smalladdrname.".jpg"); } ResizeImage($im,$RESIZEWIDTH,$RESIZEHEIGHT,$smalladdrname); ImageDestroy ($im); } } echo "<div align='center'><a href='javascript:window.history.back()'>上传成功</a></div>"; } //缩略图结束----------------------------------------------------- } ?> <form action="" method="post" enctype="multipart/form-data" name="form1" id="form1"> <input type="file" name="image" /> <input type="hidden" name="MAX_FILE_SIZE" value="<?=1024*100?>"> <input type="submit" name="Submit" value="上传图片" /> </form>阅读(3811) 分享(0)
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