thinkphp3.2.2有预览的多图上传
整体思路
1 封装文件上传和图片上传的类文件
2 视图中添加相关JS和表单提交
3 控制器中添加上传文件的相关代码
一 2个class 文件 请上传到/ThinkPHP/Library/Think/
UploadFile.class.php
<?php namespace Think; // +---------------------------------------------------------------------- // | ThinkPHP [ WE CAN DO IT JUST THINK IT ] // +---------------------------------------------------------------------- // | Copyright (c) 2009 http://thinkphp.cn All rights reserved. // +---------------------------------------------------------------------- // | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 ) // +---------------------------------------------------------------------- // | Author: liu21st <liu21st@gmail.com> // +---------------------------------------------------------------------- // $Id: UploadFile.class.php 2568 2012-01-10 12:15:45Z liu21st $ /** +------------------------------------------------------------------------------ * 文件上传类 +------------------------------------------------------------------------------ * @category ORG * @package ORG * @subpackage Net * @author liu21st <liu21st@gmail.com> * @version $Id: UploadFile.class.php 2568 2012-01-10 12:15:45Z liu21st $ +------------------------------------------------------------------------------ */ class UploadFile {//类定义开始 // 上传文件的最大值 public $maxSize = -1; // 是否支持多文件上传 public $supportMulti = true; // 允许上传的文件后缀 // 留空不作后缀检查 public $allowExts = array(); // 允许上传的文件类型 // 留空不做检查 public $allowTypes = array(); // 使用对上传图片进行缩略图处理 public $thumb = false; // 图库类包路径 public $imageClassPath = 'Think.UploadImage'; // 缩略图最大宽度 public $thumbMaxWidth; // 缩略图最大高度 public $thumbMaxHeight; // 缩略图前缀 public $thumbPrefix = 'thumb_'; public $thumbSuffix = ''; // 缩略图保存路径 public $thumbPath = ''; // 缩略图文件名 public $thumbFile = ''; // 是否移除原图 public $thumbRemoveOrigin = false; // 压缩图片文件上传 public $zipImages = false; // 启用子目录保存文件 public $autoSub = false; // 子目录创建方式 可以使用hash date public $subType = 'hash'; public $dateFormat = 'Ymd'; public $hashLevel = 1; // hash的目录层次 // 上传文件保存路径 public $savePath = ''; public $autoCheck = true; // 是否自动检查附件 // 存在同名是否覆盖 public $uploadReplace = false; // 上传文件命名规则 // 例如可以是 time uniqid com_create_guid 等 // 必须是一个无需任何参数的函数名 可以使用自定义函数 public $saveRule = ''; // 上传文件Hash规则函数名 // 例如可以是 md5_file sha1_file 等 public $hashType = 'md5_file'; // 错误信息 private $error = ''; // 上传成功的文件信息 private $uploadFileInfo ; /** +---------------------------------------------------------- * 架构函数 +---------------------------------------------------------- * @access public +---------------------------------------------------------- */ public function __construct($maxSize='',$allowExts='',$allowTypes='',$savePath='',$saveRule='') { if(!empty($maxSize) && is_numeric($maxSize)) { $this->maxSize = $maxSize; } if(!empty($allowExts)) { if(is_array($allowExts)) { $this->allowExts = array_map('strtolower',$allowExts); }else { $this->allowExts = explode(',',strtolower($allowExts)); } } if(!empty($allowTypes)) { if(is_array($allowTypes)) { $this->allowTypes = array_map('strtolower',$allowTypes); }else { $this->allowTypes = explode(',',strtolower($allowTypes)); } } if(!empty($saveRule)) { $this->saveRule = $saveRule; }else{ $this->saveRule = C('UPLOAD_FILE_RULE'); } $this->savePath = $savePath; } /** +---------------------------------------------------------- * 上传一个文件 +---------------------------------------------------------- * @access public +---------------------------------------------------------- * @param mixed $name 数据 * @param string $value 数据表名 +---------------------------------------------------------- * @return string +---------------------------------------------------------- * @throws ThinkExecption +---------------------------------------------------------- */ private function save($file) { $filename = $file['savepath'].$file['savename']; if(!$this->uploadReplace && is_file($filename)) { // 不覆盖同名文件 $this->error = '文件已经存在！'.$filename; return false; } // 如果是图像文件 检测文件格式 if( in_array(strtolower($file['extension']),array('gif','jpg','jpeg','bmp','png','swf')) && false === getimagesize($file['tmp_name'])) { $this->error = '非法图像文件'; return false; } if(!move_uploaded_file($file['tmp_name'], $this->autoCharset($filename,'utf-8','gbk'))) { $this->error = '文件上传保存错误！'; return false; } if($this->thumb && in_array(strtolower($file['extension']),array('gif','jpg','jpeg','bmp','png'))) { $image = getimagesize($filename); if(false !== $image) { //是图像文件生成缩略图 $thumbWidth = explode(',',$this->thumbMaxWidth); $thumbHeight = explode(',',$this->thumbMaxHeight); $thumbPrefix = explode(',',$this->thumbPrefix); $thumbSuffix = explode(',',$this->thumbSuffix); $thumbFile = explode(',',$this->thumbFile); $thumbPath = $this->thumbPath?$this->thumbPath:$file['savepath']; // 生成图像缩略图 import($this->imageClassPath); $realFilename = $this->autoSub?basename($file['savename']):$file['savename']; for($i=0,$len=count($thumbWidth); $i<$len; $i++) { $thumbname = $thumbPath.$thumbPrefix[$i].substr($realFilename,0,strrpos($realFilename, '.')).$thumbSuffix[$i].'.'.$file['extension']; UploadImage::thumb($filename,$thumbname,'',$thumbWidth[$i],$thumbHeight[$i],true); } if($this->thumbRemoveOrigin) { // 生成缩略图之后删除原图 unlink($filename); } } } if($this->zipImags) { // TODO 对图片压缩包在线解压 } return true; } /** +---------------------------------------------------------- * 上传所有文件 +---------------------------------------------------------- * @access public +---------------------------------------------------------- * @param string $savePath 上传文件保存路径 +---------------------------------------------------------- * @return string +---------------------------------------------------------- * @throws ThinkExecption +---------------------------------------------------------- */ public function upload($savePath ='') { //如果不指定保存文件名，则由系统默认 if(empty($savePath)) $savePath = $this->savePath; // 检查上传目录 if(!is_dir($savePath)) { // 检查目录是否编码后的 if(is_dir(base64_decode($savePath))) { $savePath = base64_decode($savePath); }else{ // 尝试创建目录 if(!mkdir($savePath)){ $this->error = '上传目录'.$savePath.'不存在'; return false; } } }else { if(!is_writeable($savePath)) { $this->error = '上传目录'.$savePath.'不可写'; return false; } } $fileInfo = array(); $isUpload = false; // 获取上传的文件信息 // 对$_FILES数组信息处理 $files = $this->dealFiles($_FILES); foreach($files as $key => $file) { //过滤无效的上传 if(!empty($file['name'])) { //登记上传文件的扩展信息 $file['key'] = $key; $file['extension'] = $this->getExt($file['name']); $file['savepath'] = $savePath; $file['savename'] = $this->getSaveName($file); // 自动检查附件 if($this->autoCheck) { if(!$this->check($file)) return false; } //保存上传文件 if(!$this->save($file)) return false; if(function_exists($this->hashType)) { $fun = $this->hashType; $file['hash'] = $fun($this->autoCharset($file['savepath'].$file['savename'],'utf-8','gbk')); } //上传成功后保存文件信息，供其他地方调用 unset($file['tmp_name'],$file['error']); $fileInfo[] = $file; $isUpload = true; } } if($isUpload) { $this->uploadFileInfo = $fileInfo; return true; }else { $this->error = '没有选择上传文件'; return false; } } //循环创建目录 lish 开放 /*function mk_dir($dir, $mode = 0755) { if (is_dir($dir) || @mkdir($dir,$mode)) return true; if (!mk_dir(dirname($dir),$mode)) return false; return @mkdir($dir,$mode); } */ public function mk_dir($dir, $mode = 0755) { if (is_dir($dir) || @mkdir($dir,$mode,true)) return true; if (!mk_dir(dirname($dir),$mode,true)) return false; return @mkdir($dir,$mode,true); } /** +---------------------------------------------------------- * 上传单个上传字段中的文件 支持多附件 +---------------------------------------------------------- * @access public +---------------------------------------------------------- * @param array $file 上传文件信息 * @param string $savePath 上传文件保存路径 +---------------------------------------------------------- * @return string +---------------------------------------------------------- * @throws ThinkExecption +---------------------------------------------------------- */ public function uploadOne($file,$savePath=''){ //如果不指定保存文件名，则由系统默认 if(empty($savePath)) $savePath = $this->savePath; // 检查上传目录 if(!is_dir($savePath)) { // 尝试创建目录 if(!mk_dir($savePath)){ $this->error = '上传目录'.$savePath.'不存在'; return false; } }else { if(!is_writeable($savePath)) { $this->error = '上传目录'.$savePath.'不可写'; return false; } } //过滤无效的上传 if(!empty($file['name'])) { $fileArray = array(); if(is_array($file['name'])) { $keys = array_keys($file); $count = count($file['name']); for ($i=0; $i<$count; $i++) { foreach ($keys as $key) $fileArray[$i][$key] = $file[$key][$i]; } }else{ $fileArray[] = $file; } $info = array(); foreach ($fileArray as $key=>$file){ //登记上传文件的扩展信息 $file['extension'] = $this->getExt($file['name']); $file['savepath'] = $savePath; $file['savename'] = $this->getSaveName($file); // 自动检查附件 if($this->autoCheck) { if(!$this->check($file)) return false; } //保存上传文件 if(!$this->save($file)) return false; if(function_exists($this->hashType)) { $fun = $this->hashType; $file['hash'] = $fun($this->autoCharset($file['savepath'].$file['savename'],'utf-8','gbk')); } unset($file['tmp_name'],$file['error']); $info[] = $file; } // 返回上传的文件信息 return $info; }else { $this->error = '没有选择上传文件'; return false; } } /** +---------------------------------------------------------- * 转换上传文件数组变量为正确的方式 +---------------------------------------------------------- * @access private +---------------------------------------------------------- * @param array $files 上传的文件变量 +---------------------------------------------------------- * @return array +---------------------------------------------------------- */ private function dealFiles($files) { $fileArray = array(); $n = 0; foreach ($files as $file){ if(is_array($file['name'])) { $keys = array_keys($file); $count = count($file['name']); for ($i=0; $i<$count; $i++) { foreach ($keys as $key) $fileArray[$n][$key] = $file[$key][$i]; $n++; } }else{ $fileArray[$n] = $file; $n++; } } return $fileArray; } /** +---------------------------------------------------------- * 获取错误代码信息 +---------------------------------------------------------- * @access public +---------------------------------------------------------- * @param string $errorNo 错误号码 +---------------------------------------------------------- * @return void +---------------------------------------------------------- * @throws ThinkExecption +---------------------------------------------------------- */ protected function error($errorNo) { switch($errorNo) { case 1: $this->error = '上传的文件超过了 php.ini 中 upload_max_filesize 选项限制的值'; break; case 2: $this->error = '上传文件的大小超过了 HTML 表单中 MAX_FILE_SIZE 选项指定的值'; break; case 3: $this->error = '文件只有部分被上传'; break; case 4: $this->error = '没有文件被上传'; break; case 6: $this->error = '找不到临时文件夹'; break; case 7: $this->error = '文件写入失败'; break; default: $this->error = '未知上传错误！'; } return ; } /** +---------------------------------------------------------- * 根据上传文件命名规则取得保存文件名 +---------------------------------------------------------- * @access private +---------------------------------------------------------- * @param string $filename 数据 +---------------------------------------------------------- * @return string +---------------------------------------------------------- */ private function getSaveName($filename) { $rule = $this->saveRule; if(empty($rule)) {//没有定义命名规则，则保持文件名不变 $saveName = $filename['name']; }else { if(function_exists($rule)) { //使用函数生成一个唯一文件标识号 $saveName = $rule().".".$filename['extension']; }else { //使用给定的文件名作为标识号 $saveName = $rule.".".$filename['extension']; } } if($this->autoSub) { // 使用子目录保存文件 $filename['savename'] = $saveName; $saveName = $this->getSubName($filename).'/'.$saveName; } return $saveName; } /** +---------------------------------------------------------- * 获取子目录的名称 +---------------------------------------------------------- * @access private +---------------------------------------------------------- * @param array $file 上传的文件信息 +---------------------------------------------------------- * @return string +---------------------------------------------------------- */ private function getSubName($file) { switch($this->subType) { case 'date': $dir = date($this->dateFormat,time()); break; case 'hash': default: $name = md5($file['savename']); $dir = ''; for($i=0;$i<$this->hashLevel;$i++) { $dir .= $name{$i}.'/'; } break; } if(!is_dir($file['savepath'].$dir)) { //mk_dir($file['savepath'].$dir); mkdir($file['savepath'].$dir,true); //自己改的 迎合php5.0 } return $dir; } /** +---------------------------------------------------------- * 检查上传的文件 +---------------------------------------------------------- * @access private +---------------------------------------------------------- * @param array $file 文件信息 +---------------------------------------------------------- * @return boolean +---------------------------------------------------------- */ private function check($file) { if($file['error']!== 0) { //文件上传失败 //捕获错误代码 $this->error($file['error']); return false; } //文件上传成功，进行自定义规则检查 //检查文件大小 if(!$this->checkSize($file['size'])) { $this->error = '上传文件大小不符！'; return false; } //检查文件Mime类型 if(!$this->checkType($file['type'])) { $this->error = '上传文件MIME类型不允许！'; return false; } //检查文件类型 if(!$this->checkExt($file['extension'])) { $this->error ='上传文件类型不允许'; return false; } //检查是否合法上传 if(!$this->checkUpload($file['tmp_name'])) { $this->error = '非法上传文件！'; return false; } return true; } // 自动转换字符集 支持数组转换 private function autoCharset($fContents, $from='gbk', $to='utf-8') { $from = strtoupper($from) == 'UTF8' ? 'utf-8' : $from; $to = strtoupper($to) == 'UTF8' ? 'utf-8' : $to; if (strtoupper($from) === strtoupper($to) || empty($fContents) || (is_scalar($fContents) && !is_string($fContents))) { //如果编码相同或者非字符串标量则不转换 return $fContents; } if (function_exists('mb_convert_encoding')) { return mb_convert_encoding($fContents, $to, $from); } elseif (function_exists('iconv')) { return iconv($from, $to, $fContents); } else { return $fContents; } } /** +---------------------------------------------------------- * 检查上传的文件类型是否合法 +---------------------------------------------------------- * @access private +---------------------------------------------------------- * @param string $type 数据 +---------------------------------------------------------- * @return boolean +---------------------------------------------------------- */ private function checkType($type) { if(!empty($this->allowTypes)) return in_array(strtolower($type),$this->allowTypes); return true; } /** +---------------------------------------------------------- * 检查上传的文件后缀是否合法 +---------------------------------------------------------- * @access private +---------------------------------------------------------- * @param string $ext 后缀名 +---------------------------------------------------------- * @return boolean +---------------------------------------------------------- */ private function checkExt($ext) { if(!empty($this->allowExts)) return in_array(strtolower($ext),$this->allowExts,true); return true; } /** +---------------------------------------------------------- * 检查文件大小是否合法 +---------------------------------------------------------- * @access private +---------------------------------------------------------- * @param integer $size 数据 +---------------------------------------------------------- * @return boolean +---------------------------------------------------------- */ private function checkSize($size) { return !($size > $this->maxSize) || (-1 == $this->maxSize); } /** +---------------------------------------------------------- * 检查文件是否非法提交 +---------------------------------------------------------- * @access private +---------------------------------------------------------- * @param string $filename 文件名 +---------------------------------------------------------- * @return boolean +---------------------------------------------------------- */ private function checkUpload($filename) { return is_uploaded_file($filename); } /** +---------------------------------------------------------- * 取得上传文件的后缀 +---------------------------------------------------------- * @access private +---------------------------------------------------------- * @param string $filename 文件名 +---------------------------------------------------------- * @return boolean +---------------------------------------------------------- */ private function getExt($filename) { $pathinfo = pathinfo($filename); return $pathinfo['extension']; } /** +---------------------------------------------------------- * 取得上传文件的信息 +---------------------------------------------------------- * @access public +---------------------------------------------------------- * @return array +---------------------------------------------------------- */ public function getUploadFileInfo() { return $this->uploadFileInfo; } /** +---------------------------------------------------------- * 取得最后一次错误信息 +---------------------------------------------------------- * @access public +---------------------------------------------------------- * @return string +---------------------------------------------------------- */ public function getErrorMsg() { return $this->error; } }
2 UploadImage.class.php
<?php namespace Think; // +---------------------------------------------------------------------- // | ThinkPHP [ WE CAN DO IT JUST THINK IT ] // +---------------------------------------------------------------------- // | Copyright (c) 2009 http://thinkphp.cn All rights reserved. // +---------------------------------------------------------------------- // | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 ) // +---------------------------------------------------------------------- // | Author: liu21st <liu21st@gmail.com> // +---------------------------------------------------------------------- // $Id: Image.class.php 2708 2012-02-06 04:10:11Z liu21st $ /** +------------------------------------------------------------------------------ * 图像操作类库 +------------------------------------------------------------------------------ * @category ORG * @package ORG * @subpackage Util * @author liu21st <liu21st@gmail.com> * @version $Id: Image.class.php 2708 2012-02-06 04:10:11Z liu21st $ +------------------------------------------------------------------------------ */ class UploadImage { /** +---------------------------------------------------------- * 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; } } /** +---------------------------------------------------------- * 为图片添加水印 +---------------------------------------------------------- * @static public +---------------------------------------------------------- * @param string $source 原文件名 * @param string $water 水印图片 * @param string $$savename 添加水印后的图片名 * @param string $alpha 水印的透明度 +---------------------------------------------------------- * @return void +---------------------------------------------------------- */ static public function water($source, $water, $savename=null, $alpha=80) { //检查文件是否存在 if (!file_exists($source) || !file_exists($water)) return false; //图片信息 $sInfo = self::getImageInfo($source); $wInfo = self::getImageInfo($water); //如果图片小于水印图片，不生成图片 if ($sInfo["width"] < $wInfo["width"] || $sInfo['height'] < $wInfo['height']) return false; //建立图像 $sCreateFun = "imagecreatefrom" . $sInfo['type']; $sImage = $sCreateFun($source); $wCreateFun = "imagecreatefrom" . $wInfo['type']; $wImage = $wCreateFun($water); //设定图像的混色模式 imagealphablending($wImage, true); //图像位置,默认为右下角右对齐 $posY = $sInfo["height"] - $wInfo["height"]; $posX = $sInfo["width"] - $wInfo["width"]; //生成混合图像 imagecopymerge($sImage, $wImage, $posX, $posY, 0, 0, $wInfo['width'], $wInfo['height'], $alpha); //输出图像 $ImageFun = 'Image' . $sInfo['type']; //如果没有给出保存文件名，默认为原图像名 if (!$savename) { $savename = $source; @unlink($source); } //保存图像 $ImageFun($sImage, $savename); imagedestroy($sImage); } function showImg($imgFile, $text='', $x='10', $y='10', $alpha='50') { //获取图像文件信息 //2007/6/26 增加图片水印输出，$text为图片的完整路径即可 $info = UploadImage::getImageInfo($imgFile); if ($info !== false) { $createFun = str_replace('/', 'createfrom', $info['mime']); $im = $createFun($imgFile); if ($im) { $ImageFun = str_replace('/', '', $info['mime']); //水印开始 if (!empty($text)) { $tc = imagecolorallocate($im, 0, 0, 0); if (is_file($text) && file_exists($text)) {//判断$text是否是图片路径 // 取得水印信息 $textInfo = Image::getImageInfo($text); $createFun2 = str_replace('/', 'createfrom', $textInfo['mime']); $waterMark = $createFun2($text); //$waterMark=imagecolorallocatealpha($text,255,255,0,50); $imgW = $info["width"]; $imgH = $info["width"] * $textInfo["height"] / $textInfo["width"]; //$y = ($info["height"]-$textInfo["height"])/2; //设置水印的显示位置和透明度支持各种图片格式 imagecopymerge($im, $waterMark, $x, $y, 0, 0, $textInfo['width'], $textInfo['height'], $alpha); } else { imagestring($im, 80, $x, $y, $text, $tc); } //ImageDestroy($tc); } //水印结束 if ($info['type'] == 'png' || $info['type'] == 'gif') { imagealphablending($im, FALSE); //取消默认的混色模式 imagesavealpha($im, TRUE); //设定保存完整的 alpha 通道信息 } Header("Content-type: " . $info['mime']); $ImageFun($im); @ImageDestroy($im); return; } //保存图像 $ImageFun($sImage, $savename); imagedestroy($sImage); //获取或者创建图像文件失败则生成空白PNG图片 $im = imagecreatetruecolor(80, 30); $bgc = imagecolorallocate($im, 255, 255, 255); $tc = imagecolorallocate($im, 0, 0, 0); imagefilledrectangle($im, 0, 0, 150, 30, $bgc); imagestring($im, 4, 5, 5, "no pic", $tc); UploadImage::output($im); return; } } /** +---------------------------------------------------------- * 生成缩略图 +---------------------------------------------------------- * @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 string $position 缩略图保存目录 * @param boolean $interlace 启用隔行扫描 +---------------------------------------------------------- * @return void +---------------------------------------------------------- */ static function thumb($image, $thumbname, $type='', $maxWidth=200, $maxHeight=50, $interlace=true) { // 获取原图信息 $info = UploadImage::getImageInfo($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); $scale = min($maxWidth / $srcWidth, $maxHeight / $srcHeight); // 计算缩放比例 if ($scale >= 1) { // 超过原图大小不再缩略 $width = $srcWidth; $height = $srcHeight; } else { // 缩略图尺寸 $width = (int) ($srcWidth * $scale); $height = (int) ($srcHeight * $scale); } // 载入原图 $createFun = 'ImageCreateFrom' . ($type == 'jpg' ? 'jpeg' : $type); $srcImg = $createFun($image); //创建缩略图 if ($type != 'gif' && function_exists('imagecreatetruecolor')) $thumbImg = imagecreatetruecolor($width, $height); else $thumbImg = imagecreate($width, $height); // 复制图片 if (function_exists("ImageCopyResampled")) imagecopyresampled($thumbImg, $srcImg, 0, 0, 0, 0, $width, $height, $srcWidth, $srcHeight); else imagecopyresized($thumbImg, $srcImg, 0, 0, 0, 0, $width, $height, $srcWidth, $srcHeight); 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); $imageFun($thumbImg, $thumbname); imagedestroy($thumbImg); imagedestroy($srcImg); return $thumbname; } return false; } /** +---------------------------------------------------------- * 把图像转换成字符显示 +---------------------------------------------------------- * @static * @access public +---------------------------------------------------------- * @param string $image 要显示的图像 * @param string $type 图像类型，默认自动获取 +---------------------------------------------------------- * @return string +---------------------------------------------------------- */ static function showASCIIImg($image, $string='', $type='') { $info = Image::getImageInfo($image); if ($info !== false) { $type = empty($type) ? $info['type'] : $type; unset($info); // 载入原图 $createFun = 'ImageCreateFrom' . ($type == 'jpg' ? 'jpeg' : $type); $im = $createFun($image); $dx = imagesx($im); $dy = imagesy($im); $i = 0; $out = '<span style="padding:0px;margin:0;line-height:100%;font-size:1px;">'; set_time_limit(0); for ($y = 0; $y < $dy; $y++) { for ($x = 0; $x < $dx; $x++) { $col = imagecolorat($im, $x, $y); $rgb = imagecolorsforindex($im, $col); $str = empty($string) ? '*' : $string[$i++]; $out .= sprintf('<span style="margin:0px;color:#%02x%02x%02x">' . $str . '</span>', $rgb['red'], $rgb['green'], $rgb['blue']); } $out .= "<br> "; } $out .= '</span>'; imagedestroy($im); return $out; } return false; } /** +---------------------------------------------------------- * 生成UPC-A条形码 +---------------------------------------------------------- * @static +---------------------------------------------------------- * @param string $type 图像格式 * @param string $type 图像格式 * @param string $lw 单元宽度 * @param string $hi 条码高度 +---------------------------------------------------------- * @return string +---------------------------------------------------------- */ static function UPCA($code, $type='png', $lw=2, $hi=100) { static $Lencode = array('0001101', '0011001', '0010011', '0111101', '0100011', '0110001', '0101111', '0111011', '0110111', '0001011'); static $Rencode = array('1110010', '1100110', '1101100', '1000010', '1011100', '1001110', '1010000', '1000100', '1001000', '1110100'); $ends = '101'; $center = '01010'; /* UPC-A Must be 11 digits, we compute the checksum. */ if (strlen($code) != 11) { die("UPC-A Must be 11 digits."); } /* Compute the EAN-13 Checksum digit */ $ncode = '0' . $code; $even = 0; $odd = 0; for ($x = 0; $x < 12; $x++) { if ($x % 2) { $odd += $ncode[$x]; } else { $even += $ncode[$x]; } } $code.= ( 10 - (($odd * 3 + $even) % 10)) % 10; /* Create the bar encoding using a binary string */ $bars = $ends; $bars.=$Lencode[$code[0]]; for ($x = 1; $x < 6; $x++) { $bars.=$Lencode[$code[$x]]; } $bars.=$center; for ($x = 6; $x < 12; $x++) { $bars.=$Rencode[$code[$x]]; } $bars.=$ends; /* Generate the Barcode Image */ if ($type != 'gif' && function_exists('imagecreatetruecolor')) { $im = imagecreatetruecolor($lw * 95 + 30, $hi + 30); } else { $im = imagecreate($lw * 95 + 30, $hi + 30); } $fg = ImageColorAllocate($im, 0, 0, 0); $bg = ImageColorAllocate($im, 255, 255, 255); ImageFilledRectangle($im, 0, 0, $lw * 95 + 30, $hi + 30, $bg); $shift = 10; for ($x = 0; $x < strlen($bars); $x++) { if (($x < 10) || ($x >= 45 && $x < 50) || ($x >= 85)) { $sh = 10; } else { $sh = 0; } if ($bars[$x] == '1') { $color = $fg; } else { $color = $bg; } ImageFilledRectangle($im, ($x * $lw) + 15, 5, ($x + 1) * $lw + 14, $hi + 5 + $sh, $color); } /* Add the Human Readable Label */ ImageString($im, 4, 5, $hi - 5, $code[0], $fg); for ($x = 0; $x < 5; $x++) { ImageString($im, 5, $lw * (13 + $x * 6) + 15, $hi + 5, $code[$x + 1], $fg); ImageString($im, 5, $lw * (53 + $x * 6) + 15, $hi + 5, $code[$x + 6], $fg); } ImageString($im, 4, $lw * 95 + 17, $hi - 5, $code[11], $fg); /* Output the Header and Content. */ Image::output($im, $type); } static function output($im, $type='png', $filename='') { header("Content-type: image/" . $type); $ImageFun = 'image' . $type; if (empty($filename)) { $ImageFun($im); } else { $ImageFun($im, $filename); } imagedestroy($im); } }
第二步 视图中增加简单代码
我的测试代码放在这里 /Application/Home/View/Index/index.html
<!doctype html> <html> <head> <meta charset="utf-8"> <title>多图片上传预览(原创)-jq22.com</title> <script src="http://libs.baidu.com/jquery/1.11.3/jquery.min.js"></script> <style> img { vertical-align: top; width:500px; }</style> </head> <body> <form enctype="multipart/form-data" action="__URL__/upload" method="post"> <input id="browse" name="photo[]" type="file" onchange="previewFiles()" multiple=""> <div id="preview"></div> <input type="submit" value="提交"> </form> </body> </html> <script> function previewFiles() { var preview = document.querySelector('#preview'); var files = document.querySelector('input[type=file]').files; function readAndPreview(file) { // Make sure `file.name` matches our extensions criteria if (/.(jpe?g|png|gif)$/i.test(file.name)) { var reader = new FileReader(); reader.addEventListener("load", function() { var image = new Image(); image.title = file.name; image.src = this.result; preview.appendChild(image); }, false); reader.readAsDataURL(file); } } if (files) { [].forEach.call(files, readAndPreview); } } </script> </body> </html>
第3 控制器的上传代码
/Application/Home/Controller/IndexController.class.php
<?php namespace HomeController; use ThinkController; class IndexController extends Controller { public function upload() { $upload = new ThinkUploadFile();// 实例化上传类 $upload->maxSize = 3000000 ;// 设置附件上传大小 C('UPLOAD_SIZE'); $upload->savePath = './Uploads/' . 'thumb/'; // 设置附件上传目录 $upload->allowExts = array('jpg', 'gif', 'png', 'jpeg'); // 设置附件上传类型 $upload->saveRule = 'uniqid'; $upload->uploadReplace = true; //是否存在同名文件是否覆盖 $upload->thumb = true; //是否对上传文件进行缩略图处理 $upload->thumbMaxWidth = '300,600'; //缩略图处理宽度 $upload->thumbMaxHeight = '200,400'; //缩略图处理高度 $upload->thumbPrefix = 'm_,s_'; //生产2张缩略图 $upload->thumbPath = './Uploads/' . 'thumb/' . date('Ymd', time()) . '/'; //缩略图保存路径 $upload->thumbRemoveOrigin = true; //上传图片后删除原图片 $upload->autoSub = true; //是否使用子目录保存图片 $upload->subType = 'date'; //子目录保存规则 $upload->dateFormat = 'Ymd'; //子目录保存规则为date时时间格式 if(!$upload->upload()){// 上传错误提示错误信息 $this->error($upload->getError()); } else { $info = $upload->getUploadFileInfo(); foreach($info as $file) { /*$model = M( 'web_img'); $picname = $file['savename']; $picname = explode('/', $picname); $url1 = $picname[0] . '/' . 'm_' . $picname[1]; $url2 = $picname[0] . '/' . 's_' . $picname[1]; $temp["face"] = $file['savepath'].$url2; //大缩略图 $temp["thumb"] = $file['savepath'].$url1; //小缩略图 $temp["Addtime"] = date("Y/m/d H:i:s"); //$save=$model->add($temp); * */ $save=1; } if($save){ $this->success('上传成功！'); } } } }
最后看下效果
