preg_match(): Compilation failed: regular expression is too large

Hello!

Severity: Warning --> preg_match(): Compilation failed: regular expression is too large at offset 48136 /system/database/DB_query_builder.php 2336

Lines:

PHP Code:

for ($ci = 0, $cc = count($conditions); $ci < $cc; $ci++)
                {
                    if (($op = $this->_get_operator($conditions[$ci])) === FALSE
                        OR ! preg_match('/^(\(?)(.*)('.preg_quote($op, '/').')\s*(.*(?<!\)))?(\)?)$/i', $conditions[$ci], $matches))
                    {
                        continue;
                    }