I used PHP to encapsulate a mysql class in the DB database.

I used PHP to encapsulate a mysql class in the DB database.

 Conn = mysql_connect (DB_HOST, DB_USER, DB_PASS) or die ("connect failed ". mysql_error (); // select the database mysql_select_db (DB_DATABASENAME, $ this-> conn); // SET the encoding format mysql_query ("set names utf8 "); // var_dump ($ conn); $ this-> tablename = $ tablename;} // Set the SQL statement private function setsql ($ SQL) {$ this-> SQL = $ SQL;} // set the condition statement public function where ($ where) {$ this-> where = "where ". $ where; return $ this;} // Press the specified field public function field ($ keyword) {$ this-> fieldname = $ keyword; return $ this ;} // Set the connection query table public function table ($ table1, $ table2, $ field, $ bool) {$ this-> tablename = "$ table1 left join $ table2 ON $ table1. $ field $ bool $ table2. $ field"; // print_r ($ this-> tablename ); return $ this;} // set the public function addtable ($ table1, $ table2, $ field, $ bool) {$ this-> tablename. = "left join $ table2 ON $ table1. $ field $ bool $ table2. $ field"; // print_r ($ this-> tablename); return $ this ;} // Set the connection query table # SELECT * FROM [wx_order left join wx_shopcar ON orders = wx_order.oid and wx_order.uid = left join wx_goods ON orders = orders] WHERE wx_order.oid = 1 and wx_order.uid = 3 public function settable ($ SQL) {$ this-> tablename = $ SQL; // print_r ($ this-> tablename); return $ this ;}// query all databases and output the public function select () in an array () {/*** query all data in the database **/$ arr = array (); // execute the SQL statement $ result = mysql_query ("select ". $ this-> fieldname. "from ". $ this-> tablename. $ this-> where, $ this-> conn); while ($ row = mysql_fetch_assoc ($ result) {array_push ($ arr, $ row);} return $ arr ;} // search for the specified field data public function find () {// execute the SQL statement $ result = mysql_query ("select ". $ this-> fieldname. "from ". $ this-> tablename. $ this-> where, $ this-> conn); $ result = mysql_fetch_assoc ($ result); return $ result;} // add data to the database public function add ($ data) {$ keysql = ''; $ valuesql =''; foreach ($ data as $ key => $ value) {$ keysql. = ", '$ key"'; $ valuesql. = ", '$ value'" ;}$ keysql = substr ($ keysql, 1); $ valuesql = substr ($ valuesql, 1 ); $ result = mysql_query ("insert "'. $ this-> tablename. "'($ keysql) VALUES ($ valuesql)"); $ id = mysql_insert_id (); // print_r ("insert "'. $ this-> tablename. "'($ keysql) VALUES ($ valuesql)"); return $ id;} // modify the database content public function save ($ data) {$ keysql = ''; $ valuesql = ''; foreach ($ data as $ key => $ value) {$ keysql. = ", '$ key' =' $ value'";} $ keysql = substr ($ keysql, 1); // print_r ($ keysql); // echo"
"; $ Result = mysql_query (" UPDATE "'. $ this-> tablename. "'set ". $ keysql. $ this-> where); // print_r ("UPDATE "'. $ this-> tablename. "'set ". $ keysql. $ this-> where); return $ result ;}## delete data public function delete () {$ result = mysql_query ("delete from $ this-> tablename $ this-> where "); // print_r ("delete from $ this-> tablename $ this-> where"); return $ result ;}/ *** mysql_fetch_row: returns the fields in a single column [0] => "111" * mysql_fetch_field: obtains the field information. . [0] => ['name'] => object * mysql_fetch_array returns array data. [0] => "asasds" ['name'] => */?>

From: http://my.oschina.net/Peron/blog/552601