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235 lines
5.9 KiB
235 lines
5.9 KiB
<?php
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class FileUpload {
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private $filepath; //指定上传文件保存的路径
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private $allowtype=array('gif', 'jpg', 'png', 'jpeg'); //充许上传文件的类型
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private $maxsize=1000000; //允上传文件的最大长度 1M
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private $israndname=true; //是否随机重命名, true false不随机,使用原文件名
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private $originName; //源文件名称
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private $tmpFileName; //临时文件名
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private $fileType; //文件类型
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private $fileSize; //文件大小
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private $newFileName; //新文件名
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private $errorNum=0; //错误号
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private $errorMess=""; //用来提供错误报告
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//用于对上传文件初使化
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//1. 指定上传路径, 2,充许的类型, 3,限制大小, 4,是否使用随机文件名称
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//让用户可以不用按位置传参数,后面参数给值不用将前几个参数也提供值
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function __construct($options=array()){
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foreach($options as $key=>$val){
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$key=strtolower($key);
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//查看用户参数中数组的下标是否和成员属性名相同
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if(!in_array($key,get_class_vars(get_class($this)))){
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continue;
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}
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$this->setOption($key, $val);
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}
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}
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private function getError(){
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$str="上传文件<font color='red'>{$this->originName}</font>时出错:";
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switch($this->errorNum){
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case 4: $str .= "没有文件被上传"; break;
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case 3: $str .= "文件只被部分上传"; break;
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case 2: $str .= "上传文件超过了HTML表单中MAX_FILE_SIZE选项指定的值"; break;
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case 1: $str .= "上传文件超过了php.ini 中upload_max_filesize选项的值"; break;
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case -1: $str .= "末充许的类型"; break;
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case -2: $str .= "文件过大,上传文件不能超过{$this->maxSize}个字节"; break;
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case -3: $str .= "上传失败"; break;
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case -4: $str .= "建立存放上传文件目录失败,请重新指定上传目录"; break;
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case -5: $str .= "必须指定上传文件的路径"; break;
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default: $str .= "末知错误";
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}
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return $str.'<br>';
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}
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//用来检查文件上传路径
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private function checkFilePath(){
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if(empty($this->filepath)) {
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$this->setOption('errorNum', -5);
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return false;
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}
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if(!file_exists($this->filepath) || !is_writable($this->filepath)){
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if(!@mkdir($this->filepath, 0755)){
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$this->setOption('errorNum', -4);
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return false;
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}
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}
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return true;
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}
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//用来检查文件上传的大小
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private function checkFileSize() {
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if($this->fileSize > $this->maxsize){
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$this->setOPtion('errorNum', '-2');
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return false;
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}else{
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return true;
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}
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}
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//用于检查文件上传类型
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private function checkFileType() {
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if(in_array(strtolower($this->fileType), $this->allowtype)) {
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return true;
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}else{
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$this->setOption('errorNum', -1);
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return false;
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}
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}
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//设置上传后的文件名称
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private function setNewFileName(){
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if($this->israndname){
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$this->setOption('newFileName', $this->proRandName());
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} else {
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$this->setOption('newFileName', $this->originName);
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}
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}
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//设置随机文件名称
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private function proRandName(){
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$fileName=date("YmdHis").rand(100,999);
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return $fileName.'.'.$this->fileType;
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}
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private function setOption($key, $val){
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$this->$key=$val;
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}
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//用来上传一个文件
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function uploadFile($fileField){
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$return=true;
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//检查文件上传路径
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if(!$this->checkFilePath()){
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$this->errorMess=$this->getError();
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return false;
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}
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$name=$_FILES[$fileField]['name'];
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$tmp_name=$_FILES[$fileField]['tmp_name'];
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$size=$_FILES[$fileField]['size'];
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$error=$_FILES[$fileField]['error'];
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if(is_Array($name)){
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$errors=array();
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for($i=0; $i<count($name); $i++){
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if($this->setFiles($name[$i], $tmp_name[$i], $size[$i], $error[$i])){
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if(!$this->checkFileSize() || !$this->checkFileType()){
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$errors[]=$this->getError();
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$return=false;
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}
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}else{
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$error[]=$this->getError();
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$return=false;
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}
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if(!$return)
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$this->setFiles();
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}
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if($return){
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$fileNames=array();
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for($i=0; $i<count($name); $i++){
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if($this->setFiles($name[$i], $tmp_name[$i], $size[$i], $error[$i])){
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$this->setNewFileName();
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if(!$this->copyFile()){
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$errors=$this->getError();
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$return=false;
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}else{
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$fileNames[]=$this->newFileName;
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}
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}
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}
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$this->newFileName=$fileNames;
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}
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$this->errorMess=$errors;
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return $return;
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} else {
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if($this->setFiles($name, $tmp_name, $size, $error)){
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if($this->checkFileSize() && $this->checkFileType()){
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$this->setNewFileName();
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if($this->copyFile()){
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return true;
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}else{
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$return=false;
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}
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}else{
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$return=false;
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}
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}else{
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$return=false;
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}
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if(!$return)
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$this->errorMess=$this->getError();
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return $return;
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}
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}
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private function copyFile(){
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if(!$this->errorNum){
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$filepath=rtrim($this->filepath, '/').'/';
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$filepath.=$this->newFileName;
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if(@move_uploaded_file($this->tmpFileName, $filepath)) {
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return true;
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}else{
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$this->setOption('errorNum', -3);
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return false;
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}
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}else{
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return false;
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}
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}
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//设置和$_FILES有关的内容
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private function setFiles($name="", $tmp_name='', $size=0, $error=0){
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$this->setOption('errorNum', $error);
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if($error){
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return false;
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}
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$this->setOption('originName', $name);
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$this->setOption('tmpFileName', $tmp_name);
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$arrStr=explode('.', $name);
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$this->setOption('fileType', strtolower($arrStr[count($arrStr)-1]));
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$this->setOption('fileSize', $size);
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return true;
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}
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//用于获取上传后文件的文件名
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function getNewFileName(){
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return $this->newFileName;
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}
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//上传如果失败,则调用这个方法,就可以查看错误报告
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function getErrorMsg() {
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return $this->errorMess;
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}
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}
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