oscommerce - PHP Parse error: syntax error, unexpected T_STRING -

i'm working in oscommerece , getting in error log

php parse error: syntax error, unexpected t_string in public_html/includes/classes/seo.class.php(2206) : eval()'d code on line 1

maybe remove <?php, ?> tags, seo.class.php seems run input through eval()

mixed eval(string $code)

the code mustn't wrapped in opening , closing php tags...