Front-end small White's daily learning record----PHP (7) Session and Cookie

Server-side session technology (communication Protocol)

By subway:
Shenzhen Tong
Get the phone brush.

Cookies (data stored in the client's browser)
Session (data stored in the Web server)

How do I use cookies?

1. Set/unregister cookies (new cookie.php)

<?php/*array (' user ' = ' ghostwu ') *///function Setcookie (c_name,value,expiredays)                      //variable name, value, Expiration days Setcookie ( "User", "Zhangsan");//Set Success if (Isset ($_get[' act ') && $_get[' act '] = = ' logout ') {    //time (): Gets the current    timestamp Setcookie ("User", "", Time ()-1);//Clears the user's value and expires it}?>  <a href= "? act=logout" > Logout </a>

2. Remove the cookie (new cookie2.php)

<?php        /* All cookies inside php are stored in the Super global variable $_cookie        $_cookie is a class array stored in the browser    *    //Print_r ($_cookie) ;    echo $_cookie[' user ';    if (!empty ($_cookie[' user ')) {        echo $_cookie[' user '];    }? >

3. A login page for setting cookies (new login.php)

Use cookie to save username and password when login is successful

Setcookie ("name", $userName); /

Setcookie ("pwd", $USERPWD);

<! DOCTYPE html>
　　
4. Use the saved cookie---> Login Success page (new success.php)
<! DOCTYPE html>
How do I use the session?
1. Set/Logoff session(new session. php)
   <?php        /* To use the session, you must first open the session with Session_Start ()               An array of classes is created on the Web server $_session    *    / Session_Start ();    $_session[' name '] = ' zhangsan ';    if (Isset ($_get[' act ')) && $_get[' act '] = = ' Logout '  ) {        //delete an item of an array, or delete a variable        unset ($_session[ ' name ']);    }? ><a href= "? act=logout" > Logout </a>
2. Remove session(new session2.php)
<?php    session_start ();    if (!empty ($_session[' name ')) {        echo $_session[' name '];    }? >
   3. One setting     session   Login page for   (new login2.php)   
<! DOCTYPE html>
   4.  Use saved      Session     ---> Login Success page  (new succeed2.php)   
<! DOCTYPE html>
   5. Save the session ---> registration page (new reg.php) when the registration page is registered successfully   
<! DOCTYPE html>
　　
　　
Front-end small White's daily learning record----PHP (7) Session and Cookie