new host ,getting error ~_~

[linhhon2003]

that error i get when my forum go to new host
Fatal error: Allowed memory size of 8388608 bytes exhausted (tried to allocate 291883 bytes) in /home2/xxxxxxx/includes/functions.php(5166) : eval()'d code on line 83

What mean ??

[snakes1100]

Increase your memory_limit in php.ini and restart apache/iis