1.阿里云基本函數

/*** 把本地變量的內容到文件* 簡單上傳,上傳指定變量的內存值作為object的內容*/ public function putObject($imgPath,$object) { $content = file_get_contents($imgPath); // 把當前文件的內容獲取到傳入文件中$options = array();try {$this->ossClient->putObject($this->bucket, $object, $content, $options);} catch (OssException $e) {return $e->getMessage();}return TRUE; }/*** 上傳指定的本地文件內容*/ public function uploadFile($imgPath,$object) //$_FILES['img']['tmp_name'] {$filePath = $imgPath;$options = array();try {$this->ossClient->uploadFile($this->bucket, $object, $filePath, $options);} catch (OssException $e) {return $e->getMessage();}return TRUE; }// 刪除對象 public function deleteObject($object) {try {$this->ossClient->deleteObject($this->bucket, $object);} catch (OssException $e) {return $e->getMessage();}return TRUE; }// 判斷對象是否存在 public function doesObjectExist($object) {try {$result = $this->ossClient->doesObjectExist($this->bucket, $object);} catch (OssException $e) {return $e->getMessage();}return $result; }// 批量刪除對象 public function deleteObjects($objects) {try {$this->ossClient->deleteObjects($this->bucket, $objects);} catch (OssException $e) {return $e->getMessage();}return TRUE; }/*** 獲取object的內容** @param OssClient $ossClient OssClient實例* @param string $bucket 存儲空間名稱* @return null*/ public function getObject($object) {$options = array();try {$content = $this->ossClient->getObject($this->bucket, $object, $options);} catch (OssException $e) {return $e->getMessage();}// file_get_contentsreturn $content; }

2.基本配置與輔助函數

public $ossClient,$bucket; private $configinfo = array('maxSize' => -1, // 上傳文件的最大值'supportMulti' => true, // 是否支持多文件上傳'allowExts' => array(), // 允許上傳的文件后綴 留空不作后綴檢查'allowTypes' => array(), // 允許上傳的文件類型 留空不做檢查'thumb' => false, // 使用對上傳圖片進行縮略圖處理'imageClassPath' => 'ORG.Util.Image', // 圖庫類包路徑'thumbMaxWidth' => '',// 縮略圖最大寬度'thumbMaxHeight' => '',// 縮略圖最大高度'thumbPrefix' => 'thumb_',// 縮略圖前綴'thumbSuffix' => '','thumbPath' => '',// 縮略圖保存路徑'thumbFile' => '',// 縮略圖文件名'thumbExt' => '',// 縮略圖擴展名'thumbRemoveOrigin' => false,// 是否移除原圖'zipImages' => false,// 壓縮圖片文件上傳'autoSub' => false,// 啟用子目錄保存文件'subType' => 'hash',// 子目錄創建方式 可以使用hash date custom'subDir' => '', // 子目錄名稱 subType為custom方式后有效'dateFormat' => 'Ymd','hashLevel' => 1, // hash的目錄層次'savePath' => '',// 上傳文件保存路徑'autoCheck' => true, // 是否自動檢查附件'uploadReplace' => false,// 存在同名是否覆蓋'saveRule' => 'uniqid',// 上傳文件命名規則'hashType' => 'md5_file',// 上傳文件Hash規則函數名); // 錯誤信息 private $error = ''; // 上傳成功的文件信息 private $uploadFileInfo ;public function __get($name){if(isset($this->configinfo[$name])) {return $this->configinfo[$name];}return null; }public function __set($name,$value){if(isset($this->configinfo[$name])) {$this->configinfo[$name] = $value;} }public function __isset($name){return isset($this->configinfo[$name]); }/*** 架構函數* @access public* @param array $config 上傳參數*/ public function __construct($config=array()) {if(is_array($config)) {$this->config = array_merge($this->config,$config);}$this->bucket = C('OSS_TEST_BUCKET');$this->ossClient = new OssClient(C('OSS_ACCESS_ID'), C('OSS_ACCESS_KEY'), C('OSS_ENDPOINT'), false); }

3.主函數

/*** 上傳所有文件* @access public* @param string $savePath 上傳文件保存路徑* @return string*/ public function upload($savePath ='') {//如果不指定保存文件名，則由系統默認if(empty($savePath)) {$savePath = $this->savePath;}$fileInfo = array();$isUpload = false;// 獲取上傳的文件信息// 對$_FILES數組信息處理$files = $this->dealFiles($_FILES);foreach($files as $key => $file) {//過濾無效的上傳if(!empty($file['name'])) {//登記上傳文件的擴展信息if(!isset($file['key'])) $file['key'] = $key;$file['extension'] = $this->getExt($file['name']);$file['savepath'] = $savePath;$file['savename'] = $this->getSaveName($file);// 自動檢查附件if($this->autoCheck) {if(!$this->check($file))return false;}//保存上傳文件if(!$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'));}//上傳成功后保存文件信息，供其他地方調用unset($file['tmp_name'],$file['error']);$fileInfo[] = $file;$isUpload = true;}}if($isUpload) {$this->uploadFileInfo = $fileInfo;return true;}else {$this->error = '沒有選擇上傳文件';return false;} }

4.核心處理函數

/*** 上傳一個文件* @access public* @param mixed $name 數據* @param string $value 數據表名* @return string*/ private function save($file) {$filename = $file['savepath'].$file['savename'];if(!$this->uploadReplace && $this->doesObjectExist($filename)) {// 不覆蓋同名文件$this->error = '文件已經存在！'.$filename;return false;}// 如果是圖像文件 檢測文件格式if( in_array(strtolower($file['extension']),array('gif','jpg','jpeg','bmp','png','swf'))) {$info = getimagesize($file['tmp_name']);if(false === $info || ('gif' == strtolower($file['extension']) && empty($info['bits']))){$this->error = '非法圖像文件';return false; }}if(!$this->putObject($file['tmp_name'], $this->autoCharset($filename,'utf-8','gbk'))) {$this->error = '文件上傳保存錯誤！';return false;}if($this->thumb && in_array(strtolower($file['extension']),array('gif','jpg','jpeg','bmp','png'))) {$image = getimagesize(C('OSS_IMG_URL').'/'.$filename);if(false !== $image) {//是圖像文件生成縮略圖$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:dirname($filename).'/';$thumbExt = $this->thumbExt ? $this->thumbExt : $file['extension']; //自定義縮略圖擴展名// 生成圖像縮略圖import($this->imageClassPath);for($i=0,$len=count($thumbWidth); $i<$len; $i++) {if(!empty($thumbFile[$i])) {$thumbname = $thumbFile[$i];}else{$prefix = isset($thumbPrefix[$i])?$thumbPrefix[$i]:$thumbPrefix[0];$suffix = isset($thumbSuffix[$i])?$thumbSuffix[$i]:$thumbSuffix[0];$thumbname = $prefix.basename($filename,'.'.$file['extension']).$suffix;}$this->thumb(C('OSS_IMG_URL').'/'.$filename,$thumbPath.$thumbname.'.'.$thumbExt,'',$thumbWidth[$i],$thumbHeight[$i],true); }if($this->thumbRemoveOrigin) {// 生成縮略圖之后刪除原圖$this->deleteObject($filename);}}}if($this->zipImags) {// TODO 對圖片壓縮包在線解壓}return true; }/*** 生成縮略圖* @static* @access public* @param string $image 原圖* @param string $type 圖像格式* @param string $thumbname 縮略圖文件名* @param string $maxWidth 寬度* @param string $maxHeight 高度* @param string $position 縮略圖保存目錄* @param boolean $interlace 啟用隔行掃描* @return void*/ public function thumb($image, $thumbname, $type='', $maxWidth=200, $maxHeight=50, $interlace=true) {// 獲取原圖信息$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);$scale = min($maxWidth / $srcWidth, $maxHeight / $srcHeight); // 計算縮放比例if ($scale >= 1) {// 超過原圖大小不再縮略$width = $srcWidth;$height = $srcHeight;} else {// 縮略圖尺寸$width = (int) ($srcWidth * $scale);$height = (int) ($srcHeight * $scale);}// 載入原圖$createFun = 'ImageCreateFrom' . ($type == 'jpg' ? 'jpeg' : $type);if(!function_exists($createFun)) {return false;}$srcImg = $createFun($image);//創建縮略圖if ($type != 'gif' && function_exists('imagecreatetruecolor'))$thumbImg = imagecreatetruecolor($width, $height);else$thumbImg = imagecreate($width, $height);//png和gif的透明處理 by luofei614if('png'==$type){imagealphablending($thumbImg, false);//取消默認的混色模式（為解決陰影為綠色的問題）imagesavealpha($thumbImg,true);//設定保存完整的 alpha 通道信息（為解決陰影為綠色的問題） }elseif('gif'==$type){$trnprt_indx = imagecolortransparent($srcImg);if ($trnprt_indx >= 0) {//its transparent$trnprt_color = imagecolorsforindex($srcImg , $trnprt_indx);$trnprt_indx = imagecolorallocate($thumbImg, $trnprt_color['red'], $trnprt_color['green'], $trnprt_color['blue']);imagefill($thumbImg, 0, 0, $trnprt_indx);imagecolortransparent($thumbImg, $trnprt_indx);}}// 復制圖片if (function_exists("ImageCopyResampled"))imagecopyresampled($thumbImg, $srcImg, 0, 0, 0, 0, $width, $height, $srcWidth, $srcHeight);elseimagecopyresized($thumbImg, $srcImg, 0, 0, 0, 0, $width, $height, $srcWidth, $srcHeight);// 對jpeg圖形設置隔行掃描if ('jpg' == $type || 'jpeg' == $type)imageinterlace($thumbImg, $interlace);imagePNG($thumbImg,'Uploads/file.png'); // 中轉站// 生成圖片$this->putObject('Uploads/file.png',$thumbname);imagedestroy($thumbImg);imagedestroy($srcImg);return $thumbname;}return false; }

5.輔助函數

/*** 轉換上傳文件數組變量為正確的方式* @access private* @param array $files 上傳的文件變量* @return array*/private function dealFiles($files) {$fileArray = array();$n = 0;foreach ($files as $key=>$file){if(is_array($file['name'])) {$keys = array_keys($file);$count = count($file['name']);for ($i=0; $i<$count; $i++) {$fileArray[$n]['key'] = $key;foreach ($keys as $_key){$fileArray[$n][$_key] = $file[$_key][$i];}$n++;}}else{$fileArray[$key] = $file;}}return $fileArray;}/*** 檢查上傳的文件* @access private* @param array $file 文件信息* @return boolean*/private function check($file) {if($file['error']!== 0) {//文件上傳失敗//捕獲錯誤代碼$this->error($file['error']);return false;}//文件上傳成功，進行自定義規則檢查//檢查文件大小if(!$this->checkSize($file['size'])) {$this->error = '上傳文件大小不符！';return false;}//檢查文件Mime類型if(!$this->checkType($file['type'])) {$this->error = '上傳文件MIME類型不允許！';return false;}//檢查文件類型if(!$this->checkExt($file['extension'])) {$this->error ='上傳文件類型不允許';return false;}//檢查是否合法上傳if(!$this->checkUpload($file['tmp_name'])) {$this->error = '非法上傳文件！';return false;}return true;}// 自動轉換字符集 支持數組轉換private function autoCharset($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))) {//如果編碼相同或者非字符串標量則不轉換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;}}/*** 檢查上傳的文件類型是否合法* @access private* @param string $type 數據* @return boolean*/private function checkType($type) {if(!empty($this->allowTypes))return in_array(strtolower($type),$this->allowTypes);return true;}/*** 檢查上傳的文件后綴是否合法* @access private* @param string $ext 后綴名* @return boolean*/private function checkExt($ext) {if(!empty($this->allowExts))return in_array(strtolower($ext),$this->allowExts,true);return true;}/*** 檢查文件大小是否合法* @access private* @param integer $size 數據* @return boolean*/private function checkSize($size) {return !($size > $this->maxSize) || (-1 == $this->maxSize);}/*** 檢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);}/*** 取得上傳文件的后綴* @access private* @param string $filename 文件名* @return boolean*/private function getExt($filename) {$pathinfo = pathinfo($filename);return $pathinfo['extension'];}/*** 取得上傳文件的信息* @access public* @return array*/public function getUploadFileInfo() {return $this->uploadFileInfo;}/*** 取得最后一次錯誤信息* @access public* @return string*/public function getErrorMsg() {return $this->error;}

總結：與普通上傳的區別在于，它是全部通過阿里云的oss接口來處理文件保存的。普通上傳是把本地文件移動到服務器上，而它則是把文件移動到阿里云服務器上。
縮略圖思路，
a.上傳圖片至服務器
b.獲取圖片進行處理
c.上傳處理好的圖片至服務器
d.根據配置，刪除或者不刪除服務器的原圖（OSS）

imagePNG($thumbImg,'Uploads/file.png'); // 中轉站 // 生成圖片 $this->putObject('Uploads/file.png',$thumbname); unlink('Uploads/file.png'); imagedestroy($thumbImg);

轉載于:https://www.cnblogs.com/jiqing9006/p/5412347.html

總結

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