php图片上传类，目录自动分割、等比例缩略图 开发技术.zip

<?php /** * Filename: upload.php * @abstract 文件上传处理类 * * @copyright (c) 2012 www.yulonghu.com * @author 范家鹏 fanjiapeng@126.com * @version 3.0 - 2012.08.26 */ error_reporting(0); //屏蔽所有错误信息 define('UPLOAD_FILE_EMPTY', 101); //上传的附件、文件为空 define('UPLOAD_FILE_ILLEGAL', 102); //上传文件非法 define('UPLOAD_FILE_POSTFIX_ILLEGAL', 103); //上传文件格式非法 define('UPLOAD_FILE_SIZE_ILLEGAL', 104); //上传文件大小非法 define('UPLOAD_FILE_FAILURE', 105); //上传文件失败 define('UPLOAD_FILE_SIZE_TOOSMALL', 106); //图片像素太小 define('UPLOAD_FILE_LAYER', 107); //分割文件名宽度超出范围 define('UPLOAD_FILE_CREATE_DIR', 108); //创建目录没有权限 class upload { //默认配置 public $_config = array ( 'path' => 'upload', //上传物理地址前缀 'fileType' => 'image', //类型为图片 'cutting' => FALSE, //是否需要切图 'cutWidth' => 0, //默认等比例缩微切割宽度 'cutHeight' => 0, //默认等比例缩微切割高度 'allowType' => array(1 => 'gif', 2 => 'jpeg', 3 => 'png', 6 => 'bmp'), //可以上传的图片类型 'checkType' => TRUE, //是否检查图片格式 'checkSize' => TRUE, //是否检查图片大小 'maxSize' => 5120000, //上传最大值, 单位字节 'autoDir' => TRUE, //默认开启目录自动分割, 只上传原图有效 'cutLayer' => 2 //目录分割, 文件名宽度 ); //getimagesize + $_FILES值 public $getData = ''; private $dir_sep = DIRECTORY_SEPARATOR; //文件上传配置初始化 public function __construct ($config = array()) { if ($config && is_array($config)) { foreach ($this->_config as $k => $v) { if (isset($config[$k])) { $this->_config[$k] = $config[$k]; } } } unset($config); } //文件原图上传 public function put($arr_files = array()) { $this->getData = & $arr_files; if(!isset($this->getData['tmp_name']) || !isset($this->getData['name']) || empty($this->getData['tmp_name']) || empty($this->getData['name'])) { $this->halt(UPLOAD_FILE_EMPTY); } if(isset($this->getData['error']) && $this->getData['error']) { $this->halt(UPLOAD_FILE_FAILURE); } if(isset($this->getData['cutLayer']) && ($this->getData['cutLayer'] > 32 || $this->getData['cutLayer'] < 2)) { $this->halt(UPLOAD_FILE_FAILURE); } if(is_uploaded_file($this->getData['tmp_name'])) { $this->checkSafe(); $this->createNewPath($this->_config['autoDir'], $this->_config['cutLayer']); $this->createDir(); //图片或者文件都可以上传 return $this->doUpload() ? $this->getData : UPLOAD_FILE_FAILURE; } } /** * 文件上传开始 * * @param <string> tmp_name * @param <string> path, new_path * @return <boolean> */ private function doUpload() { if(move_uploaded_file($this->getData['tmp_name'], $this->getData['full_path'])) { return TRUE; } return FALSE; } /** * 判断上传文件大小是否合法 * * @param <number> size文件大小值 * @return <boolean> */ private function checkSize() { if($this->_config['checkSize'] && $this->getData['size'] > $this->_config['maxSize']) { return FALSE; } return TRUE; } /** * 取得文件名后缀 * * @param <string> name * @return <string> 返回后缀名称 */ private function getPostfix() { return strtolower(trim(substr(strrchr($this->getData['name'], '.'), 1, 10))); } /** * 检查文件是否为规定上传类型 * * @param <string> name * @return <boolean> */ private function checkFormat() { if($this->_config['checkType'] && !in_array($this->getPostfix(), $this->_config['allowType'])) { return FALSE; } return TRUE; } /** * 创建分隔目录 * * @param <string> path配置目录, new_path完整目录 */ private function createDir() { if(!file_exists($path = dirname($this->getData['full_path']))) { if(!@mkdir($path, 0777, TRUE)) { return UPLOAD_FILE_CREATE_DIR; } } } /** * $autoDir 如果为假, 目录分割功能关闭 * * @param <string> new_name, new_dir, new_path * @return <string> new_dir, new_path */ private function createNewPath($autoDir = TRUE, $cutLayer = 2) { $time = time(); $this->getData['new_name'] = md5($time . rand(1, 100)). '.' . $this->getPostfix(); $this->getData['new_dir'] = $this->dir_sep; if($autoDir) { $this->getData['new_dir'] = date('Ym', $time). $this->dir_sep; $this->getData['new_dir'] .= substr($this->getData['new_name'], 0, $cutLayer). $this->dir_sep; } $this->getData['full_path'] = $this->_config['path']. $this->dir_sep. $this->getData['new_dir'] . $this->getData['new_name']; } /** * 图片有效性检测 * * @param <string> fullPath 完整全路径地址 * @return <string> width图片宽度, height图片高度, img_type_number图片数字类型 */ private function checkSafe() { if(!$this->checkFormat()) { $this->halt(UPLOAD_FILE_POSTFIX_ILLEGAL); } if(!$this->checkSize()) { $this->halt(UPLOAD_FILE_SIZE_ILLEGAL); } $this->getImage(); } /** * 取得图片的长、宽、类型 * * @param <string> fullPath 完整全路径地址 */ private function getImage($fullPath = '') { if ($this->_config['fileType'] == 'image') { list($this->getData['width'], $this->getData['height'], $this->getData['img_type_number']) = getimagesize($fullPath ? $fullPath : $this->getData['tmp_name']); if(!in_array($this->getData['img_type_number'], @array_keys($this->_config['allowType']))) { $this->halt(UPLOAD_FILE_POSTFIX_ILLEGAL); } } } /** * 生成等比例缩微图thumb * * @param <string> $oldFileName 原始文件名 201107/08/08b44de34eb6f5460f374f8bd418b9bd.gif * @param <string> $newFileName 新文件名 201107/08/08b44de34eb6f5460f374f8bd418b9bd_thumb.gif * @param <string> $dirPath 把生成的新图片存放到另一个目录中 * * 注： 多切只需要传文件名即可, 不带后缀 * @param newThumbName 新文件名 thumb * @return <boolean> TRUE 成功, FALSE 失败 */ public function putThumb($oldFileName = '', $newFileName = 'thumb', $dirPath = '') { $filePath = $oldFileName ? $this->_config['path']. $this->dir_sep. $oldFileName : $this->getData['full_path']; if($filePath && $this->_config['fileType'] == 'image' && $this->_config['cutting'] && $this->_config['cutWidth'] && $this->_config['cutHeight'] && @file_exists($filePath)) { if(!isset($this->getData['width']) || !isset($this->getData['height'])) { $this->getImage($filePath); } if(!in_array($this->getData['img_type_number'], @array_keys($this->_config['allowType']))) { return UPLOAD_FILE_POSTFIX_ILLEGAL; } switch($this->getData['img_type_number']) { case 1: $im = imagecreatefromgif($filePath); break; case 2: $im = imagecreatefromjpeg($filePath); break; case 3: $im = imagecreatefrompng($filePath); break; } if(!$im) { return FALSE; } $this->_config['cutWidth'] > $this->getData['width'] && $this->_config['cutWidth'] = $this->getData['width']; $this->_config['cutHeight'] > $this->getData['height'] && $this->_config['cutHeight'] = $this->getData['height']; $width = $this->_config['cutWidth']; $height = $this->_config['cutHeight']; if ($this->_config['cutWidth'] && ($this->getData['width'] < $this->getData['height'])) { $width = ($this->_config['cutHeight'] / $this->getData['height']) * $this->getData['width']; } else {