(1064) Error:You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 13

Your Query: update tbl_order set str_firstname ='mysql_result(,0,str_firstname)', str_lastname ='mysql_result(,0,str_lastname)', str_email ='mysql_result(,0,str_email)', dtt_dob ='mysql_result(,0,dtt_dob)', str_sex ='mysql_result(,0,str_sex)', txt_address ='mysql_result(,0,txt_address)', str_city ='mysql_result(,0,str_city)', str_state ='mysql_result(,0,str_state)', str_pin ='mysql_result(,0,str_pin)', int_country_id ='mysql_result(,0,int_country_id)', str_phone ='mysql_result(,0,str_phone)', str_mphone ='mysql_result(,0,str_mphone)' where int_order_id=