This means what all POSIX Regex Functions will not work.
PHP-Fusion core still contains posix regex functions.
The solution is to upgrade to PCRE Functions.
Here how to upgrade POSIX to PCRE:
$a = eregi('<[^>]*object*"?[^>]*>',$i);
$a = preg_match('/<[^>]*object*"?[^>]*>/',$i);
All you need to do is to add / before and / after POSIX pattern.
eregi => preg_match
ereg => preg_match
ereg_replace => preg_replace
eregi_ replace => preg_replace
Note what PCRE by default is case-sensitive, to make it case-insensitive add i flag:
$a = preg_match('/<[^>]*object*"?[^>]*>/i',$i);
PCRE is also faster then POSIX.