PHP致命错误:在第148行的index.php中调用未定义的函数display_sess_msg()

PHP Fatal error: Call to undefined function display_sess_msg() in index.php on line 148

I have a strange problem, this error occurs on one of my servers, on the other the script work

The error of 148 is this: <?=display_sess_msg ();?>

td  valign="top" align="right"><font color="#D0601C"><?=display_sess_msg();?></font></td>

admin/includes/funcs_cur.inc.php

    function display_sess_msg()
{
        if($_SESSION['sess_msg']!=''){
                echo '<div class="redcolor">';
                echo "<br>".$_SESSION['sess_msg'];
                unset($_SESSION['sess_msg']);
                echo "</div>";
        }
}

The weird and I'm not finding documentation is that the call is made this way <?=display_sess_msg() without the use of $. Would anyone can say why this works in Funio and does not work on my Debian server.

Thank you

On your server where the error occurred must have been a change in php.ini

Either check that in php.ini

short_open_tag = On

and restart apache or try using

<?php display_sess_msg (); ?>