[Php] 3. student management system-View Users

[Php] 3. student management system-View Users & lt ;? Phpinclude_once & #39; stuService. class. php & #39; session_start (); $ name $ _ SESSION [& #39; student_name & #39;]; if ($ name & quot ;) {[php] 3. student management system-View Users

 Getpagecount ($ pagesize); if (! Empty ($ _ GET ['pagenow']) {$ pagenow = $ _ GET ['pagenow'];} $ stulist = $ service-> getstulist ($ pagesize, $ pagenow);?>
 Student achievement management system  

Stuservice class

 Execute_dql ($ SQL); $ row = mysqli_fetch_row ($ res); if ($ row) {$ num = $ row [0];} mysqli_free_result ($ res ); $ mysql-> close_connect (); return $ num;} // query all students public function getstulist ($ pagesize, $ pagenow) based on the size of each page and the current page) {$ mysql = new mysql (DB_HOST, DB_USER, DB_PASSWORD, DB_NAME); $ SQL = "select * from student limit ". ($ pagenow-1) * $ pagesize. ", $ pagesize"; $ res = $ mysql-> execute_dql ($ SQL); $ arr = array (); $ I = 0; w Hile ($ row = mysqli_fetch_assoc ($ res) {$ arr [$ I ++] = $ row;} mysqli_free_result ($ res); $ mysql-> close_connect (); return $ arr;} // obtain the total number of pages public function getpagecount ($ pagesize) {$ mysql = new mysql (DB_HOST, DB_USER, DB_PASSWORD, DB_NAME ); $ SQL = "select count (stu_id) from student"; $ res = $ mysql-> execute_dql ($ SQL); $ I = 0; $ row = mysqli_fetch_row ($ res ); if ($ row) {$ rowcount = $ row [0];} $ pagecount = ceil ($ rowcount/$ pages Ize); // return the next integer not less than value. if the value has a decimal part, it is entered. Mysqli_free_result ($ res); $ mysql-> close_connect (); return $ pagecount;} // obtain the corresponding public function getstu ($ name) based on the student name) {$ stu = new student (); $ mysql = new mysql (DB_HOST, DB_USER, DB_PASSWORD, DB_NAME); $ SQL = "select * from student where stu_name = '". $ name. "'"; $ res = $ mysql-> execute_dql ($ SQL); if ($ row = mysqli_fetch_assoc ($ res )) {$ stu-> setStu_id ($ row ['Stu _ id']); $ stu-> setStu_name ($ row ['Stu _ name']); $ stu-> se TStu_password ($ row ['Stu _ password']);} mysqli_free_result ($ res); $ mysql-> close_connect (); return $ stu ;} // Obtain userpublic function getstubyid ($ id) {$ stu = new student (); $ mysql = new mysql (DB_HOST, DB_USER, DB_PASSWORD, DB_NAME) based on the id number ); $ SQL = "select * from student where stu_id = '". $ id. "'"; $ res = $ mysql-> execute_dql ($ SQL); if ($ row = mysqli_fetch_assoc ($ res )) {$ stu-> setStu_id ($ row ['Stu _ id']); $ stu-> setStu _ Name ($ row ['Stu _ name']); $ stu-> setStu_password ($ row ['Stu _ password']);} mysqli_free_result ($ res ); $ mysql-> close_connect (); return $ stu;} // modify the public function update (student $ stu) in the database based on the obtained object {$ mysql = new mysql (DB_HOST, DB_USER, DB_PASSWORD, DB_NAME); $ SQL = "update student set stu_name = '". $ stu-> getStu_name (). "', stu_password = '". $ stu-> getStu_password (). "'Where stu_id = ". $ stu-> getStu_id (); $ B = $ mysql-> Execute_dml ($ SQL); // if ($ B = 1) // {// return true; //} return $ B ;} // delete user public function delete (student $ stu) {$ mysql = new mysql (DB_HOST, DB_USER, DB_PASSWORD, DB_NAME); $ SQL = "delete from student where stu_id = ". $ stu-> getStu_id (). ";"; $ B = $ mysql-> execute_dml ($ SQL); return $ B ;}}?>

Mysql class

 Link = new mysqli ($ this-> db_host, $ this-> db_user, $ this-> db_password, $ this-> db_name); // if (! $ This-> link) {// die ("connection failed ". mysql_error (); // mysql_select_db ($ this-> dbname, $ this-> link);} // run the SQL statement to obtain the result set, query statement public function execute_dql ($ SQL) {$ res = $ this-> query ($ SQL) or die (mysqli_error ($ this); return $ res ;} // execute SQLdml statement insert, update, and delete public function execute_dml ($ SQL) {$ B = $ this-> query ($ SQL) or die (mysqli_error ($ this )); if (! $ B) {return 0;} else {if ($ this-> affected_rows> 0) // if the number of rows affected by the receipt is greater than 0 {return 1; // OK} else {return 2; // no rows have been affected} // close the connection to public function close_connect () {if (! Empty ($ this) $ this-> close () ;}}?>

Student class

 stu_id;        }          /**         * @return the $stu_name         */        public function getStu_name()        {            return $this->stu_name;        }          /**         * @return the $stu_password         */        public function getStu_password()        {            return $this->stu_password;        }          /**         * @param field_type $stu_id         */        public function setStu_id($stu_id)        {            $this->stu_id = $stu_id;        }          /**         * @param field_type $stu_name         */        public function setStu_name($stu_name)        {            $this->stu_name = $stu_name;        }          /**         * @param field_type $stu_password         */        public function setStu_password($stu_password)        {            $this->stu_password = $stu_password;        }    }    ?>    

Config. php configuration database

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