致命錯誤：調用未定義功能finfo_open（）

Question

//checks size of uploaded image on server side 
if($_FILES['userfile']['size'] < $maxsize) { 

    //checks whether uploaded file is of image type 
    //if(strpos(mime_content_type($_FILES['userfile']['tmp_name']),"image")===0) { 
    $finfo=finfo_open(FILEINFO_MIME_TYPE); 
    if(strpos(finfo_file($finfo, $_FILES['userfile']['tmp_name']),"image")===0) { 

     // prepare the image for insertion 
     $imgData =addslashes (file_get_contents($_FILES['userfile']['tmp_name'])); 

     // put the image in the db... 
     // database connection 
     mysql_connect($host, $user, $pass) OR DIE (mysql_error()); 

     // select the db 
     mysql_select_db ($db) OR DIE ("Unable to select db".mysql_error()); 

我已經嘗試改變在php.ini中搜索php_fileinfo.dll 找到這個：

;extension=php_fileinfo.dll

刪除;從前面保存文件並關閉。重新啓動Apache服務器。但仍然收到致命錯誤行$ finfo = finfo_open（FILEINFO_MIME_TYPE）;如圖所示，我的php版本是5.6.8。

Answer 1

嗯，你應該發送第二個參數給finfo_open函數發送魔術文件。請閱讀http://php.net/manual/es/function.finfo-open.php