自定义MVC框架之工具类-文件上传类

截止目前已经改造了3个类:

ubuntu:通过封装验证码类库一步步安装php的gd扩展

自定义MVC框架之工具类-分页类的封装

该文件上传类功能如下：

1，允许定制上传的文件类型，文件mime信息，文件大小

2，自由定制文件名是随机还是保持原来的文件名

3，谨慎的检查，友好的错误提示，精确定位文件上传哪一步出问题

测试结果：

ghostwu@ghostwu:~/php/senior_php/upload$ tree
.
├── 19502QV8-.jpg
├── Upload
│   ├── ghostwu_5a94beb3b2690.jpg
│   ├── ghostwu_5a94c727a1f1a.php
│   └── ghostwu_5a94c740615dc.html
├── upload.html
└── upload.php

upload.php:

 <meta charset="utf-8" />
 <?php

 class Upload {
     //上传路径
     private $path = './Upload';
     //允许的文件类型
     private $allowFileType = [ 'jpg', 'png', 'jpeg', 'wbmp', 'gif' ];
     //允许的mime信息
     private $allowMime = [ 'image/jpeg', 'image/gif', 'image/png', 'image/wbmp' ];
     //允许的最大文件大小
     private $maxSize = 2048000;
     //运行随机文件名
     private $enableRandName = true;
     //文件前缀
     private $prefix = 'ghostwu_';

     //错误号
     private $errorNo;
     //错误信息
     private $errorInfo;

     //文件原来的名称
     private $originName;
     //新的文件名称
     private $newName;
     //文件后缀
     private $suffix;
     //文件大小
     private $size;
     //文件mime信息
     private $mime;
     //临时文件名
     private $tmpName;

     public function __construct( $fileInfo = [] ){
         foreach ($fileInfo as $k => $v ) {
             $this->setProperty( $k, $v );
         }
     }

     //设置成员属性
     public function setProperty( $k, $v ){
         $property = array_keys( get_class_vars( __CLASS__ ) );
         if( in_array( $k, $property ) ){
             $this->$k = $v;
         }
     }    

     public function __get( $key ) {
         if( $key == 'errorNo' ) {
             return $this->errorNo;
         }else if ( $key == 'errorInfo' ) {
             return $this->getErrorInfo();
         }
     }

     protected function getErrorInfo(){
         $info = '';
         switch( $this->errorNo ){
             case 1000:
                 $info = '没有设置上传路径';
                 break;
             case 1001:
                 $info = '上传路径不存在，或者没有写权限';
                 break;
             case 1002:
                 $info = '文件大小超过限制';
                 break;
             case 1003:
                 $info = '文件的mime信息不在允许范围内';
                 break;
             case 1004:
                 $info = '不允许上传这种类型的文件';
                 break;
             case 1006:
                 $info = '文件不是通过表单上传的';
                 break;
             case 1007:
                 $info = '文件移动失败';
                 break;
             case 1:
                 $info = '文件超出php.ini设置的大小';
                 break;
             case 2:
                 $info = '超出html表单设置的大小';
                 break;
             case 3:
                 $info = '文件只有部分被上传';
                 break;
             case 4:
                 $info = '没有文件被上传';
                 break;
             case 6:
                 $info = '找不到临时文件';
                 break;
             case 7:
                 $info = '文件写入失败';
                 break;
         }

         return $info;
     }

     protected function check(){
         if( !file_exists( $this->path ) || !is_dir( $this->path ) ){
             return mkdir( $this->path, 0777, true );
         }
         if( !is_writable( $this->path ) ){
             return chmod( $this->path, 0777 );
         }
         return true;
     }

     public function upload( $name ){
         //判断是否设置了上传路径
         if( empty( $this->path ) ) {
             $this->setProperty( 'errorNo', 1000 );
             return false;
         }
         //判断路径是否存在，可写
         if( !$this->check() ) {
             $this->setProperty( 'errorNo', 1001 );
             return false;
         }
         //判断上传文件是否错误，提取原文件信息
         $errorno = $_FILES[$name]['error'];
         if( $errorno ) {
             $this->setProperty( 'errorNo', $errorno );
             return false;
         }else {
             $this->getFileInfo( $name );
         }
         //判断文件是否符合上传要求(大小,后缀,mime)
         if( !$this->checkSize()
             || !$this->checkMime()
             || !$this->checkSuffix() ) {
             return false;
         }
         //生成新的文件名
         $this->newName = $this->createNewName();
         //判断是否为上传文件
         if( is_uploaded_file( $this->tmpName ) ) {
             if( move_uploaded_file( $this->tmpName, $this->path . '/' . $this->newName ) ){
                 return $this->path . '/' . $this->newName;
             }else {
                 $this->setProperty( 'errorNo', 1007 );
                 return false;
             }
         }else {
             $this->setProperty( 'errorNo', 1006 );
             return false;
         }
     }

     protected function createNewName(){
         if ( $this->enableRandName ) {
             $name = $this->prefix . uniqid() . '.' . $this->suffix;
         }else {
             $name = $this->prefix . $this->originName;
         }
         return $name;
     }

     protected function getFileInfo( $name ){
         $this->originName = $_FILES[$name]['name'];
         $this->mime = $_FILES[$name]['type'];
         print_r( $this->mime );
         $this->tmpName = $_FILES[$name]['tmp_name'];
         $this->size = $_FILES[$name]['size'];
         $this->suffix = pathinfo( $this->originName )['extension'];
     }

     protected function checkSize(){
         if( $this->size > $this->maxSize ) {
             $this->setProperty( 'errorNo', 1002 );
             return false;
         }
         return true;
     }

     protected function checkMime(){
             print_r( $this->allowMime );
         if( !in_array( $this->mime, $this->allowMime ) ) {
             $this->setProperty( 'errorNo', 1003 );
             return false;
         }
         return true;
     }

     protected function checkSuffix(){
         if( !in_array( $this->suffix, $this->allowFileType ) ) {
             $this->setProperty( 'errorNo', 1004 );
             return false;
         }
         return true;
     }

 }

 $upload = new Upload( [ 'maxSize' => 204800 ] );
 $upload->setProperty( 'allowFileType', ['jpg','jpeg', 'gif', 'php', 'html'] );
 $upload->setProperty( 'allowMime', [ 'image/jpeg', 'image/gif', 'image/wbmp', 'application/x-php', 'text/html'  ] );

 $upload->upload( 'photo' );

 echo $upload->errorNo . '<br/>';
 echo $upload->errorInfo . '<br/>';

 ?>

upload.html

 <!DOCTYPE html>
 <html>
         <head>
                 <meta charset="utf-8" />
                 <meta name="viewport" content="width=device-width" />
                 <title>文件上传-by ghostwu</title>
         </head>
         <body>
             <form action="upload.php" method="post" enctype="multipart/form-data" >
                 <input type="file" name="photo" id="photo" />
                 <input type="submit" name="upload" id="upload" value="上传" />
             </form>
         </body>
 </html>