上传图片，生成略缩图，加水印工具类代码,PHP代码库,德仔网

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【PHP】上传图片，生成略缩图，加水印工具类
作者:bianmaren / 发布于2015/4/8/ 468

	<?php
	class UpImages {
	 var $annexFolder = "upload";//附件存放点，默认为：annex
	 var $smallFolder = "small";//缩略图存放路径，注：必须是放在 $annexFolder下的子目录，默认为：smallimg
	 var $markFolder = "mark";//水印图片存放处
	 var $upFileType = "jpg gif png";//上传的类型，默认为：jpg gif png rar zip
	 var $upFileMax = 1024;//上传大小限制，单位是&ldquo;KB&rdquo;，默认为：1024KB
	 var $fontType;//字体
	 var $maxWidth = 500; //图片最大宽度
	 var $maxHeight = 600; //图片最大高度
	 function UpImages($annexFolder,$smallFolder,$includeFolder) {
	 $this->annexFolder = $annexFolder;
	 $this->smallFolder = $smallFolder;
	 $this->fontType = $includeFolder."/04B_08__.TTF";
	 }
	 function upLoad($inputName) {
	 $imageName = time();//设定当前时间为图片名称
	 if(@empty($_FILES[$inputName]["name"])) die("没有上传图片信息，请确认");
	 $name = explode(".",$_FILES[$inputName]["name"]);//将上传前的文件以&ldquo;.&rdquo;分开取得文件类型
	 $imgCount = count($name);//获得截取的数量
	 $imgType = $name[$imgCount-1];//取得文件的类型
	 if(strpos($this->upFileType,$imgType) === false) die(error("上传文件类型仅支持 ".$this->upFileType." 不支持 ".$imgType));
	 $photo = $imageName.".".$imgType;//写入数据库的文件名
	 $uploadFile = $this->annexFolder."/".$photo;//上传后的文件名称
	 $upFileok = move_uploaded_file($_FILES[$inputName]["tmp_name"],$uploadFile);
	 if($upFileok) {
	 $imgSize = $_FILES[$inputName]["size"];
	 $kSize = round($imgSize/1024);
	 if($kSize > ($this->upFileMax*1024)) {
	 @unlink($uploadFile);
	 die(error("上传文件超过 ".$this->upFileMax."KB"));
	 }
	 } else {
	 die(error("上传图片失败，请确认你的上传文件不超过 $upFileMax KB 或上传时间超时"));
	 }
	 return $photo;
	 }
	 function getInfo($photo) {
	 $photo = $this->annexFolder."/".$photo;
	 $imageInfo = getimagesize($photo);
	 $imgInfo["width"] = $imageInfo[0];
	 $imgInfo["height"] = $imageInfo[1];
	 $imgInfo["type"] = $imageInfo[2];
	 $imgInfo["name"] = basename($photo);
	 return $imgInfo;
	 }
	 function smallImg($photo,$width=128,$height=128) {
	 $imgInfo = $this->getInfo($photo);
	 $photo = $this->annexFolder."/".$photo;//获得图片源
	 $newName = substr($imgInfo["name"],0,strrpos($imgInfo["name"], "."))."_thumb.jpg";//新图片名称
	 if($imgInfo["type"] == 1) {
	 $img = imagecreatefromgif($photo);
	 } elseif($imgInfo["type"] == 2) {
	 $img = imagecreatefromjpeg($photo);
	 } elseif($imgInfo["type"] == 3) {
	 $img = imagecreatefrompng($photo);
	 } else {
	 $img = "";
	 }
	 if(empty($img)) return False;
	 $width = ($width > $imgInfo["width"]) ? $imgInfo["width"] : $width;
	 $height = ($height > $imgInfo["height"]) ? $imgInfo["height"] : $height;
	 $srcW = $imgInfo["width"];
	 $srcH = $imgInfo["height"];
	 if ($srcW * $width > $srcH * $height) {
	 $height = round($srcH * $width / $srcW);
	 } else {
	 $width = round($srcW * $height / $srcH);
	 }
	 if (function_exists("imagecreatetruecolor")) {
	 $newImg = imagecreatetruecolor($width, $height);
	 ImageCopyResampled($newImg, $img, 0, 0, 0, 0, $width, $height, $imgInfo["width"], $imgInfo["height"]);
	 } else {
	 $newImg = imagecreate($width, $height);
	 ImageCopyResized($newImg, $img, 0, 0, 0, 0, $width, $height, $imgInfo["width"], $imgInfo["height"]);
	 }
	 if ($this->toFile) {
	 if (file_exists($this->annexFolder."/".$this->smallFolder."/".$newName)) @unlink($this->annexFolder."/".$this->smallFolder."/".$newName);
	 ImageJPEG($newImg,$this->annexFolder."/".$this->smallFolder."/".$newName);
	 return $this->annexFolder."/".$this->smallFolder."/".$newName;
	 } else {
	 ImageJPEG($newImg);
	 }
	 ImageDestroy($newImg);
	 ImageDestroy($img);
	 return $newName;
	 }
	 function waterMark($photo,$text) {
	 $imgInfo = $this->getInfo($photo);
	 $photo = $this->annexFolder."/".$photo;
	 $newName = substr($imgInfo["name"], 0, strrpos($imgInfo["name"], ".")) . "_mark.jpg";
	 switch ($imgInfo["type"]) {
	 case 1:
	 $img = imagecreatefromgif($photo);
	 break;
	 case 2:
	 $img = imagecreatefromjpeg($photo);
	 break;
	 case 3:
	 $img = imagecreatefrompng($photo);
	 break;
	 default:
	 return False;
	 }
	 if (empty($img)) return False;
	 $width = ($this->maxWidth > $imgInfo["width"]) ? $imgInfo["width"] : $this->maxWidth;
	 $height = ($this->maxHeight > $imgInfo["height"]) ? $imgInfo["height"] : $this->maxHeight;
	 $srcW = $imgInfo["width"];
	 $srcH = $imgInfo["height"];
	 if ($srcW * $width > $srcH * $height) {
	 $height = round($srcH * $width / $srcW);
	 } else {
	 $width = round($srcW * $height / $srcH);
	 }
	 if (function_exists("imagecreatetruecolor")) {
	 $newImg = imagecreatetruecolor($width, $height);
	 ImageCopyResampled($newImg, $img, 0, 0, 0, 0, $width, $height, $imgInfo["width"], $imgInfo["height"]);
	 } else {
	 $newImg = imagecreate($width, $height);
	 ImageCopyResized($newImg, $img, 0, 0, 0, 0, $width, $height, $imgInfo["width"], $imgInfo["height"]);
	 }
	
	 $white = imageColorAllocate($newImg, 255, 255, 255);
	 $black = imageColorAllocate($newImg, 0, 0, 0);
	 $alpha = imageColorAllocateAlpha($newImg, 230, 230, 230, 40);
	 ImageFilledRectangle($newImg, 0, $height-26, $width, $height, $alpha);
	 ImageFilledRectangle($newImg, 13, $height-20, 15, $height-7, $black);
	 ImageTTFText($newImg, 4.9, 0, 20, $height-14, $black, $this->fontType, $text[0]);
	 ImageTTFText($newImg, 4.9, 0, 20, $height-6, $black, $this->fontType, $text[1]);
	 if($this->toFile) {
	 if (file_exists($this->annexFolder."/".$this->markFolder."/".$newName)) @unlink($this->annexFolder."/".$this->markFolder."/".$newName);
	 ImageJPEG($newImg,$this->annexFolder."/".$this->markFolder."/".$newName);
	 return $this->annexFolder."/".$this->markFolder."/".$newName;
	 } else {
	 ImageJPEG($newImg);
	 }
	 ImageDestroy($newImg);
	 ImageDestroy($img);
	 return $newName;
	 }
	}
	?>
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　水印　　上传图片　　略缩图　
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