The below config will cause "Internal Server Error" from Nginx 0.8.41: ``` location ~ ^/(?P<table>\w+)/(?P<id>\d+)/?$ { set_form_input $columns; set_form_input $values; array_split ',' $values to=$array; array_map_op set_quote_sql_str $array; array_join ',' $array to=$sql_args; echo $sql_args; } ``` Removing the array_map_op line allows it to complete successfully. Test with: ``` curl -d "columns=username,password&values=joe,secret" http://localhost/users/1 ```