php upload files and upload files for simple authentication (error message format (security equipment), size, whether http upload)

<body> 
? < PHP
 / * * 
* validation error 
* If there is error, it returns an error, if yes, it returns null 
* / 
function the Check ( $ File ) {
     // 1: Verify wrong 
    IF ( $ File [ 'error'] = 0! ) {
         Switch ( $ file [ 'error' ]) {
             Case . 1:
                 return 'php.ini file size exceeds the maximum allowed, the maximum value is:'. the ini_get ( 'the upload_max_filesize' ) ;
             Case 2:
                 return 'file size exceeds the maximum permissible form' ;
             Case . 3:
                 return'Only part of the file to upload' ;
             Case 4:
                 return 'no file upload' ;
             Case 6:
                 return 'can not find the temporary file' ;
             Case 7:
                 return 'file write failed' ;
             default :
                 return 'unknown error' ; 
        } 
    } 
    // 2. verify the form 
　　　// Step 1: create finfo resource 
    $ info = finfo_open (FILEINFO_MIME_TYPE); 
     // Step two: finfo resource files and compare the
     $ MIME = finfo_file ( $ info , $ file [ 'tmp_name']); 
　　 // third step, comparing the legality
     $ the allow = Array ( 'Image / JPEG', 'Image / PNG', 'Image / GIF');     // allow categories 
    IF ! ( The in_array ( $ MIME , $ the allow )) {
         return 'only upload'. The implode ( ',', $ the allow ) 'format' ; 
    } 
    // 3, verify the size of 
    $ size = 123456789 ;
     IF ( $ File [ 'size']> $ size ) {
         return 'file size can not exceed'. number_format ( $ size /1024,1).'K ' ;
    }
    //4. Verify is http upload 
    IF (! Is_uploaded_file ( $ File [ 'tmp_name' ]))
         return 'is not a HTTP POST file upload <br>' ; 

    return  null ;   // no error 
} 

// form submission 
IF (! Empty ( $ _POST )) {
     // upload error during error is displayed 
    IF ( $ error = Check ( $ _FILES [ 'face' ])) {
         echo  $ error ; 
    } the else {
         // file upload, upload files to save to the day of the folder 
        $ FolderName = DATE( 'Ym of-D');         // folder name 
        $ FolderPath = "./ uploads / { $ FolderName }";     // folder path 
        IF (! Is_dir ( $ FolderPath ))
             mkdir ( $ FolderPath );
         $ filename = of uniqid ( '', to true .) The strrchr ( $ _FILES [ 'face'] [ 'name'], ''.);     // file name 
        $ filepath = " $ FolderPath / $ filename ";    // file path 
        IF ( move_uploaded_file ( $ _FILES['face']['tmp_name'],$filepath))
            echo "上传成功,路径是：{$foldername}/{$filename}";
        else
            echo '上传失败<br>';
    }

}
?>
<form method="post" action="" enctype='multipart/form-data'>
    <input type="file" name="face">
    <input type="submit" name="button" value="上传">
</form>
</body>

operation result

Prevention and treatment need to open the file camouflage fileinfo.dll extension in php.ini, open function after fileinfo extension, you can use the finfo_ *.

php upload files and upload files for simple authentication (error message format (security equipment), size, whether http upload)

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