PHP fileinfo is undefined function
Have a look at your php.ini file and check that the fileinfo.soor php_fileinfo.dll is activated (depending on your platform and version). There should be a line similar to extension=fileinfo.so in your php.ini file
undefined-function
Undefined function mysql_connect() [duplicate]
In case, you are using PHP7 already, the formerly deprecated functions mysql_* were removed entirely, so you should update your code using the PDO-functions or mysqli_* functions instead. If that’s not possible, as a workaround, I created a small PHP include file, that recreates the old mysql_* functions with mysqli_*()-functions: fix_mysql.inc.php