dbda

usingSystem;usingSystem.Collections.Generic;usingSystem.Linq;usingSystem.Text;usingSystem.Threading.Tasks;namespacesingle-column mode {//single-row mode//control a class can instantiate only one object//class Test//General Class//{ //public string name; //} //Data Access Classes classDbda { Public stringhost; Public stringdatabase; //a static member that is used to store the object of the class Public StaticDBDA db =NULL; //let the class not be instantiated PrivateDbda (

to the order table and order content table 7. Click View account to view the account balance of the user. The operation code is as follows: 1. First, create a login page: loginpage. php 2. On the login processing page: dengluchuli. php Session_start ();$ Uid = $ _ POST ["uid"];$ Pwd = $ _ POST ["pwd"];Require_once "./DBDA. class. php ";$ Db = new DBDA ();$ SQL = "select * from login where username = '{$ u

//Test t2 = new test (); the - //Dbda db = Dbda. Duixiang (); Wu //db.host = "localhost"; - //Dbda db1 = Dbda. Duixiang (); About $ - //Delegate - //parameterization of the method -Suibian s =China ; A +s + = America;//+ = is the binding method

Access the database using PHP -- Implement the paging function and multi-condition query function, and access data Paging 1. Implement Paging Require_once "./DBDA. class. php"; // load the encapsulation file of the database metadata classRequire_once "page. class. php"; // load the encapsulated file of the paging class$ Db = new DBDA ();$ SQL = "select count (*) from car ";$ Arr = $ db-> query ($ szts );$ P

Tags: PHP display for function interface es2017 option exit minPHP Implementation message Board function: 1 First login page: 2 Login page After completion to enter the login processing page, that is, the above submitted to the messloginchuli.php Session_Start (); // login to connect the included pages and open the session .$uid = $_post["UID"];$pwd = $_post["pwd"];Require_once "./dbda.class.php";$db = new Dbda ();$sql = "Select password from Yu

Login Loginchuli:Session_Start ();Include (".. /dbda.class.php ");$db = new Dbda ();$uid = $_post["U"];$pwd = $_post["P"];$sql = "Select password from login where username= ' {$uid} '";$MM = $db->strquery ($sql);if ($mm = = $pwd $pwd! = ""){$_session["UID"]= $uid;echo "OK";}Else{echo "NO";}MainSession_Start ();Include (".. /dbda.class.php ");$db = new Dbda ();?>$AGWC = Array ();if (!empty ($_session["

Program{static void Main (string[] args){Test T1 = new test ();Test t2 = new Test ();DBDA db = Dbda. Duixiang ();Db.host = "localhost";Dbda db1 = Dbda. Duixiang ();CommissionedParameterization of the methodSuibian s = China;s + = America; + = is the binding method = minus a methodEventEvents are a special kind of dele

; //construct method to let the class not be instantiated PrivateDbda () {}//provide a way to create objects, control only one object Public StaticDbda Duixiang ()//because I can't make objects, I use static . { if(db = =NULL) {db=NewDbda (); } returnDB; } } classProgram {Static voidMain (string[] args) {DBDA db=Dbda. Duixiang (); Db.host="localho

Asynchronization, that is, you must complete the above before proceeding to the followingAsync: false,Url: "load. php ",Data: {pcode: pcode },Type: "POST ",DataType: "JSON ",Success: function (data ){Var str = "";// Traverse the array and put it into sjFor (var k in data ){Str = str + "}$ ("# Shi" pai.html (str );}});}// Loading zone informationFunction LoadQu (){// Obtain the parent codeVar pcode = $ ("# shi"). val ();// Query data based on the parent code$. Ajax ({// Asynchronous cancellation

Use PHP to connect to the database to implement the message board function. PHP implements the message board function: 1 first, the login page: $ Uid = $ _ POST ["uid"];$ Pwd = $ _ POST ["pwd"];Require_once "./DBDA. class. php ";$ Db = new DBDA ();$ SQL = "select password from yuangong where username = '{$ uid }'";$ Arr = $ db-> query ($ SQL, 0 );// Var_dump ($ arr [0] [0]);If ($ arr [0] [0] = $ pwd ! Empty

path. The result of the youdao dictionary returns the file name (computer terminology) echo dirname (" DBDA. class. php "); // get the folder directory display in the path. var_dump (pathinfo ("DBDA. class. php "); // obtain the path information display array (4) {[" dirname "] => string (1 )". "[" basename "] => string (14)" DBDA. class. php "[" extension "] =>

1, the Connection database query data display in the page2. Submit the primary key value that needs to change the data to the processing page3, the processing page through the primary key value to find the value of the Count column in the data, the value of the Count column and 1 copied to the Count column4. An explicit result on another pageYou can copy and paste the run:Database tablesResult diagram:Main PageInclude ("DBDA.class.php");$db = new Dbda

Use php and ajax to write a three-level linkage between provinces, cities, and cities to implement regional drop-down selection,To achieve three levels of interaction on this page, we need to create three php files. The first php file is imported into the jQuery file, which is embedded with JavaScript. The second php file is a php processing page, introduce the encapsulated database files. The third PHP file is the encapsulated database files. the first php JavaScript file 2. The second p

MySQL database encapsulation and paging query, mysql database Paging // My database name is house Class DBDA {Public $ host = "localhost ";Public $ uid = "root ";Public $ pwd = "root ";Public $ dbname = "house "; Public function Query ($ SQL, $ type = 1) // Two parameters. The second parameter indicates the default value. {$ Db = new mysqli ($ this-> host, $ this-> uid, $ this-> pwd, $ this-> dbname ); $ Result = $ db-> query ($ SQL );If ($ type = "1

: //Build a file that encapsulates the class DBDA.class.php Class dbda//defines a class with the class name Dbda { Public $host = " localhost ";//4 a more commonly used parameter: server address Public $uid =" root ";//user name Public $PDW =" 666 ";//password Public $dbname =" Toupiao ";// Database name //encapsulation Method //1. Method of returning a two-dimensional array /** * Give an SQL state

I. Displaying the user's information between different pagesTwo. Control Login1. Login Page2. Login Processing pageSession_Start ();Include ("DBDA.class.php");$db = new Dbda ();$uid = $_post["UID"];$pwd = $_post["pwd"];$sql = "Select pwd from users where uid= ' {$uid} '"; Password is determined by user name$attr = $db->query ($sql);$mm = $attr [0][0]; Remove passwordif (!empty ($pwd) $pwd = = $mm){$_session["UID"] = $uid; If the login is successful,