存档：
upload1.html(单文件上传)
1 <html> 2 ????<head> 3 ????????<title>单个文件上传</title> 4 ????</head> 5 ????<body> 6 ????????<form action="upload.php" method="post" enctype="multipart/form-data"> 7 ????????????<input type="hidden" name="MAX_FILE_SIZE" value="1000000"> 8 ????????????选择文件:<input type="file" name="myfile"> 9 ????????????<input type="submit" value="上传文件">10 ????????</form>11 ????</body>12 </html>
upload2.html(多文件上传)
1 <html> 2 ????<head> 3 ????????<title>多文件上传</title> 4 ????</head> 5 ????<body> 6 ????????<form action="upload.php" method="post" enctype="multipart/form-data"> 7 ????????????<input type="hidden" name="MAX_FILE_SIZE" value="1000000"> 8 ????????????选择文件1:<input type="file" name="myfile[]"><br> 9 ????????????选择文件2:<input type="file" name="myfile[]"><br>10 ????????????选择文件3:<input type="file" name="myfile[]"><br>11 ????????????<input type="submit" value="上传文件">12 ????????</form>13 ????</body>14 </html>
upload.php
1 <?php 2 ????require "fileupload.class.php"; 3 ????$up=new FileUpload; 4 ????$up ->set(‘path‘,‘./newpath/‘) 5 ????????->set(‘size‘,1000000) 6 ????????->set(‘allowtype‘,array(‘gif‘,‘jpg‘,‘png‘)) 7 ????????->set(‘israndname‘,false); 8 ????if($up->upload(‘myfile‘)){ 9 ????????print_r($up->getFileName());10 ????}11 ????else{12 ????????print_r($up->getErrorMsg());13 ????}14 ?>fileupload.class.php
?1 <?php ?2 ????class FileUpload{ ?3 ????????private $path="./uploads"; ?4 ????????private $allowtype=array(‘jpg‘,‘gif‘,‘png‘); ?5 ????????private $maxsize=1000000; ?6 ????????private $israndname=true; ?7 ????????private $originName; ?8 ????????private $tmpFileName; ?9 ????????private $fileType; 10 ????????private $fileSize; 11 ????????private $newFileName; 12 ????????private $errorNum=0; 13 ????????private $errorMess=""; 14 ?????????15 ????????function set($key,$val){ 16 ????????????$key=strtolower($key); 17 ????????????if(array_key_exists($key,get_class_vars(get_class($this)))){ 18 ????????????????$this->setOption($key,$val); 19 ????????????} 20 ????????????return $this; 21 ????????} 22 ?????????23 ????????function upload($fileField){ 24 ????????????$return=true; 25 ????????????if(!$this->checkFilePath()){ 26 ????????????????$this->errorMess=$this->getError(); 27 ????????????????return false; 28 ????????????} 29 ????????????$name=$_FILES[$fileField][‘name‘]; 30 ????????????$tmp_name=$_FILES[$fileField][‘tmp_name‘]; 31 ????????????$size=$_FILES[$fileField][‘size‘]; 32 ????????????$error=$_FILES[$fileField][‘error‘]; 33 ????????????if(is_Array($name)){ 34 ????????????????$errors=array(); 35 ????????????????for($i=0;$i<count($name);$i++){ 36 ????????????????????if($this->setFiles($name[$i],$tmp_name[$i],$size[$i],$error[$i])){ 37 ????????????????????????if(!$this->checkFileSize()||!$this->checkFileType()){ 38 ????????????????????????????$errors[]=$this->getError(); 39 ????????????????????????????$return=false; 40 ????????????????????????} 41 ????????????????????} 42 ????????????????????else{ 43 ????????????????????????$errors[]=$this->getError(); 44 ????????????????????????$return=false; 45 ????????????????????} 46 ????????????????????if(!$return){ 47 ????????????????????????$this->setFiles(); 48 ????????????????????} 49 ????????????????} 50 ????????????????if($return){ 51 ????????????????????$fileNames=array(); 52 ????????????????????for($i=0;$i<count($name);$i++){ 53 ????????????????????????if($this->setFiles($name[$i],$tmp_name[$i],$size[$i],$error[$i])){ 54 ????????????????????????????$this->setNewFileName(); 55 ????????????????????????????if(!$this->copyFile()){ 56 ????????????????????????????????$errors[]=$this->getError(); 57 ????????????????????????????????$return=false; 58 ????????????????????????????} 59 ????????????????????????????$fileNames[]=$this->newFileName; 60 ????????????????????????} 61 ????????????????????} 62 ????????????????????$this->newFileName=$fileNames; 63 ????????????????} 64 ????????????????$this->errorMess=$errors; 65 ????????????????return $return; 66 ????????????} 67 ????????????else{ 68 ????????????????if($this->setFiles($name,$tmp_name,$size,$error)){ 69 ????????????????????if($this->checkFileSize()&&$this->checkFileType()){ 70 ????????????????????????$this->setNewFileName(); 71 ????????????????????????if($this->copyFile()){ 72 ????????????????????????????return true; 73 ????????????????????????} 74 ????????????????????????else{ 75 ????????????????????????????$return=false; 76 ????????????????????????} 77 ????????????????????} 78 ????????????????????else{ 79 ????????????????????????$return=false; 80 ????????????????????} 81 ????????????????} 82 ????????????????else{ 83 ????????????????????$return=false; 84 ????????????????} 85 ????????????????if(!$return){ 86 ????????????????????$this->errorMess=$this->getError(); 87 ????????????????} 88 ????????????????return $return; 89 ????????????} 90 ????????} 91 ?????????92 ????????public function getFileName(){ 93 ????????????return $this->newFileName; 94 ????????} 95 ?????????96 ????????public function getErrorMsg(){ 97 ????????????return $this->errorMess; 98 ????????} 99 ????????100 ????????private function getError(){101 ????????????$str="上传文件<font color=‘red‘>{$this->originName}</font>时出错:";102 ????????????switch($this->errorNum){103 ????????????????case 4:104 ????????????????????$str.="没有文件被上传";105 ????????????????????break;106 ????????????????case 3:107 ????????????????????$str.="文件只有部分被上传";108 ????????????????????break;109 ????????????????case 2:110 ????????????????????$str.="上传的文件大小超过了HTML表单中MAX_FILE_SIZE选项指定的值";111 ????????????????????break;112 ????????????????case 1:113 ????????????????????$str.="上传的文件超过了php.ini中的upload_max_filesize选定限制的值";114 ????????????????????break;115 ????????????????case -1:116 ????????????????????$str.="未允许类型";117 ????????????????????break;118 ????????????????case -2:119 ????????????????????$str.="文件过大,上传的文件不能超过{$this->maxsize}个字节";120 ????????????????????break;121 ????????????????case -3:122 ????????????????????$str.="上传失败";123 ????????????????????break;124 ????????????????case -4:125 ????????????????????$str.="建立存放上传文件目录失败,请重新指定上传目录";126 ????????????????????break;127 ????????????????case -5:128 ????????????????????$str.="必须指定上传文件的路径";129 ????????????????????break;130 ????????????????default:131 ????????????????????$str.="未知错误";132 ????????????????????//break;133 ????????????}134 ????????????return $str.‘<br>‘;135 ????????}136 ????????137 ????????private function setFiles($name="",$tmp_name="",$size=0,$error=0){138 ????????????$this->setOption(‘errorNum‘,$error);139 ????????????if($error){140 ????????????????return false;141 ????????????}142 ????????????$this->setOption(‘originName‘,$name);143 ????????????$this->setOption(‘tmpFileName‘,$tmp_name);144 ????????????$aryStr=explode(".",$name);145 ????????????$this->setOption(‘fileType‘,strtolower($aryStr[count($aryStr)-1]));146 ????????????$this->setOption(‘fileSize‘,$size);147 ????????????return true;148 ????????}149 ????????150 ????????private function setOption($key,$val){151 ????????????$this->$key=$val;152 ????????}153 ????????154 ????????private function setNewFileName(){155 ????????????if($this->israndname){156 ????????????????$this->setOption(‘newFileName‘,$this->proRandName());157 ????????????}158 ????????????else{159 ????????????????$this->setOption(‘newFileName‘,$this->originName);160 ????????????}161 ????????}162 ????????163 ????????private function checkFileType(){164 ????????????if(in_array(strtolower($this->fileType),$this->allowtype)){165 ????????????????return true;166 ????????????}167 ????????????else{168 ????????????????$this->setOption(‘errorNum‘,-1);169 ????????????????return false;170 ????????????}171 ????????}172 ????????173 ????????private function checkFileSize(){174 ????????????if($this->fileSize>$this->maxsize){175 ????????????????$this->setOption(‘errorNum‘,-2);176 ????????????????return false;177 ????????????}178 ????????????else{179 ????????????????return true;180 ????????????}181 ????????}182 ????????183 ????????private function checkFilePath(){184 ????????????if(empty($this->path)){185 ????????????????$this->setOption(‘errorNum‘,-5);186 ????????????????return false;187 ????????????}188 ????????????if(!file_exists($this->path)||!is_writable($this->path)){189 ????????????????if(!@mkdir($this->path,0755)){190 ????????????????????$this->setOption(‘errorNum‘,-4);191 ????????????????????return false;192 ????????????????}193 ????????????}194 ????????????return true;195 ????????}196 ????????197 ????????private function proRandName(){198 ????????????$fileName = date(‘YmdHis‘)."_".rand(100,999);199 ????????????return $fileName.‘.‘.$this->fileType;200 ????????}201 ????????202 ????????private function copyFile(){203 ????????????if(!$this->errorNum){204 ????????????????$path=rtrim($this->path,‘/‘).‘/‘;205 ????????????????$path.=$this->newFileName;206 ????????????????if(@move_uploaded_file($this->tmpFileName,$path)){207 ????????????????????return true;208 ????????????????}209 ????????????????else{210 ????????????????????$this->setOption(‘errorNum‘,-3);211 ????????????????????return false;212 ????????????????}213 ????????????}214 ????????????else{215 ????????????????return false;216 ????????????}217 ????????}218 ????}219 ?>结果如下：
php实现文件上传
原文地址：https://www.cnblogs.com/ECJTUACM-873284962/p/8408786.html