If you receive such error in the error logs or in the browser please follow the steps below.

For non suexec/suphp servers

Create a .htaccess file under the diretcory and add the code below

php_flag short_open_tag X

For suexec/suphp servers

Copy the server’s php.ini file under the diretcory and find for short_open_tag. Open the php.ini file and change it to

short_open_tag = X

Note :: The solution is valid only if you find the error due to line in your php/html file.
HTML Code:

<?xml version=”1.0″ encoding=”iso-8859-1″?>
OR
<?xml version=”1.0″ encoding=”UTF-8″?>