php实现文件上传
Posted Angel_Kitty
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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：
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