標籤：1.0 put lang 添加 func tco web服務 location zhang
伺服器端的會話技術(通訊協議)
坐地鐵:
深圳通
拿手機刷
cookie( 儲存在 用戶端的瀏覽器裡面的資料 )
session( 儲存在 web伺服器裡面的資料 )
如何使用cookie?
1.設定/登出cookie（建立cookie.php）
<?php/*array( ‘user‘ => ‘ghostwu‘ )*/// function setCookie(c_name,value,expiredays) // 變數名，值，到期天數setcookie( "user", "zhangsan" );//設定成功if( isset( $_GET[‘act‘] ) && $_GET[‘act‘] == ‘logout‘){ //time(): 擷取到當前的時間戳記 setcookie( "user", "", time() - 1 );//清空user的值，並使它到期}?> <a href="?act=logout">登出</a>
2.取出cookie（建立cookie2.php）
<?php /* php裡面的所有cookie都是儲存在超級全域變數 $_COOKIE 裡面 $_COOKIE是儲存在瀏覽器的類數組 */ // print_r( $_COOKIE ); // echo $_COOKIE[‘user‘]; if( !empty( $_COOKIE[‘user‘] ) ){ echo $_COOKIE[‘user‘]; }?>
3.一個設定cookie的登入頁面（建立login.php）
登入成功時候用cookie儲存使用者名稱與密碼
setcookie( "name", $userName ); /
setcookie( "pwd", $userPwd );
<!DOCTYPE html><html lang="en"><head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <meta http-equiv="X-UA-Compatible" content="ie=edge"> <title>Document</title> <link href="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet"> <style> .reg-form { margin-top: 100px; } </style></head><body><!-- 連結資料庫 --> <?phprequire( ‘./mysql.class.php‘ );//連結資料庫的類檔案，請參考本系列上一節?><!-- html文本 --> <div class="container"> <div class="row"> <div class="tip"></div> <form class="form-horizontal reg-form" role="form" method="post"> <div class="form-group"> <label for="firstname" class="col-md-2 control-label">使用者名稱:</label> <div class="col-md-6"> <input type="text" class="form-control" id="user" name="user" placeholder="請輸入使用者名稱"> </div> </div> <div class="form-group"> <label for="lastname" class="col-md-2 control-label">密碼</label> <div class="col-md-6"> <input type="password" name="pwd" class="form-control" id="pwd" placeholder="請輸入密碼"> </div> </div> <div class="form-group"> <div class="col-sm-offset-2 col-sm-10"> <button type="submit" class="btn btn-primary">登入</button> </div> </div> </form> </div> </div><!-- PHP文本 --> <?phpif( !empty( $_POST[‘user‘] ) && !empty( $_POST[‘pwd‘] ) ){ //判斷使用者名稱密碼非空 $userName = $_POST[‘user‘]; $userPwd = $_POST[‘pwd‘]; $sql = "SELECT * FROM user_info WHERE user_name = ‘$userName‘ AND user_pwd = ‘$userPwd‘"; $res = mysql_query( $sql ); //查詢使用者名稱密碼 if( $res && mysql_num_rows( $res ) ){ //如果查詢成功，並且帳號密碼正確 setcookie( "name", $userName ); //設定cookie setcookie( "pwd", $userPwd ); header("Location:success.php"); //設定完跳轉到success.php頁面?> <!-- <script> window.location.href = ‘./success.html‘; </script> --><?php }else { //登入不成功，重新載入頁面 header("Location:login.php");?> <!-- <script> window.location.href = ‘./error.html‘; </script> --><?php }}?></body></html>
4.使用儲存的cookie --->登入成功頁面（建立success.php）
<!DOCTYPE html><html lang="en"><head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <meta http-equiv="X-UA-Compatible" content="ie=edge"> <title>Document</title></head><body> <?php if( empty( $_COOKIE[‘name‘] ) ){ //是否有使用者名稱 header("Location:login.php"); // 沒有使用者名稱則跳到登入頁面 } //這裡要添加一條判斷 資料庫查詢使用者名稱與密碼是否正確 //判斷方法與登入頁面相同，如果使用者名稱密碼錯誤，跳去登入頁面 //點擊登出頁面：使cookie到期 if( isset( $_GET[‘act‘] ) && $_GET[‘act‘] == ‘logout‘ ){ setcookie( ‘name‘, ‘‘, time() - 1 ); //登出cookie header("Location:login.php"); //登出後跳轉到登入頁面 } ?> <h3>歡迎您<!-- 把cookie儲存的使用者名稱取出來 --><?php echo !empty($_COOKIE[‘name‘]) ? $_COOKIE[‘name‘] : ‘‘; ?> !登入</h3> | <!-- 登出按鈕 --><a href="?act=logout">登出</a></body></html>
如何使用session?
1.設定/登出session（建立session.php）
<?php /* 要使用session, 必須先要用session_start() 開啟session web伺服器上會建立一個類數組$_SESSION */ session_start(); $_SESSION[‘name‘] = ‘zhangsan‘; if( isset( $_GET[‘act‘] ) && $_GET[‘act‘] == ‘logout‘ ){ //刪除某個數組的一項，或者刪除一個變數 unset( $_SESSION[‘name‘] ); }?><a href="?act=logout">登出</a>
2.取出session（建立session2.php）
<?php session_start(); if( !empty( $_SESSION[‘name‘] ) ){ echo $_SESSION[‘name‘]; }?>
3.一個設定session的登入頁面（建立login2.php）
<!DOCTYPE html><html lang="en"><head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <meta http-equiv="X-UA-Compatible" content="ie=edge"> <title>Document</title> <link href="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet"> <style> .reg-form { margin-top: 100px; } </style></head><body> <?php session_start();require( ‘./mysql.class.php‘ );?> <div class="container"> <div class="row"> <div class="tip"></div> <form class="form-horizontal reg-form" role="form" method="post"> <div class="form-group"> <label for="firstname" class="col-md-2 control-label">使用者名稱:</label> <div class="col-md-6"> <input type="text" class="form-control" id="user" name="user" placeholder="請輸入使用者名稱"> </div> </div> <div class="form-group"> <label for="lastname" class="col-md-2 control-label">密碼</label> <div class="col-md-6"> <input type="password" name="pwd" class="form-control" id="pwd" placeholder="請輸入密碼"> </div> </div> <div class="form-group"> <div class="col-sm-offset-2 col-sm-10"> <button type="submit" class="btn btn-primary">登入</button> </div> </div> </form> </div> </div><?phpif( !empty( $_POST[‘user‘] ) && !empty( $_POST[‘pwd‘] ) ){ $userName = $_POST[‘user‘]; $userPwd = $_POST[‘pwd‘]; $sql = "SELECT * FROM user_info WHERE user_name = ‘$userName‘ AND user_pwd = ‘$userPwd‘"; $res = mysql_query( $sql ); if( $res && mysql_num_rows( $res ) ){ $_SESSION[‘name‘] = $userName; $_SESSION[‘pwd‘] = $userPwd; header("Location:success2.php");?> <!-- <script> window.location.href = ‘./success.html‘; </script> --><?php }else { header("Location:login2.php");?> <!-- <script> window.location.href = ‘./error.html‘; </script> --><?php }}?></body></html>
4.使用儲存的session --->登入成功頁面（建立succeed2.php）
<!DOCTYPE html><html lang="en"><head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <meta http-equiv="X-UA-Compatible" content="ie=edge"> <title>Document</title></head><body> <?php session_start(); //開啟session require("./mysql.class.php");//連結資料庫的類檔案，請參考本系列上一節?><?php if( empty( $_SESSION[‘name‘] ) ){//判斷使用者名稱是否為空白 header("Location:login2.php"); } else if ( !empty( $_SESSION[‘name‘] ) ){//使用者名稱非空 $sql = "SELECT * FROM user_info WHERE user_name = ‘{$_SESSION[‘name‘]}‘ AND user_pwd = ‘{$_SESSION[‘pwd‘]}‘"; $res = $mysql->query( $sql ); if( !( $res && mysql_num_rows( $res ) ) ){//使用者名稱密碼正確 header("Location:login2.php"); } } if( isset( $_GET[‘act‘] ) && $_GET[‘act‘] == ‘logout‘ ){//是否登出 unset( $_SESSION[‘name‘] ); //移除使用者名稱 header("Location:login2.php"); } ?> <h3>歡迎您<?php echo !empty( $_SESSION[‘name‘] ) ? $_SESSION[‘name‘] : ‘‘; ?>! 登入測試人員中樞</h3> <a href="?act=logout">登出</a> </body></html>
5.在註冊頁面註冊成功的時候儲存session --->註冊頁面（建立reg.php）
<!DOCTYPE html><html lang="en"><head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <meta http-equiv="X-UA-Compatible" content="ie=edge"> <title>Document</title> <link href="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet"> <style> .reg-form { margin-top: 100px; } </style></head><body> <?php session_start();require( ‘./mysql.class.php‘ );?> <div class="container"> <div class="row"> <div class="tip"></div> <form class="form-horizontal reg-form" role="form" method="post"> <div class="form-group"> <label for="firstname" class="col-md-2 control-label">使用者名稱:</label> <div class="col-md-6"> <input type="text" class="form-control" id="user" name="user" placeholder="請輸入使用者名稱"> </div> </div> <div class="form-group"> <label for="lastname" class="col-md-2 control-label">密碼</label> <div class="col-md-6"> <input type="password" name="pwd" class="form-control" id="pwd" placeholder="請輸入密碼"> </div> </div> <div class="form-group"> <div class="col-sm-offset-2 col-sm-10"> <button type="submit" class="btn btn-primary">註冊</button> </div> </div> </form> </div> </div> <?phpif( !empty( $_POST[‘user‘] ) && !empty( $_POST[‘pwd‘] ) ){ $userName = $_POST[‘user‘]; $userPwd = $_POST[‘pwd‘]; $sql = ‘SELECT * FROM user_info WHERE user_name = "‘ . $userName . ‘"‘; $res = mysql_query( $sql ); if( $res && mysql_num_rows( $res ) ){ //使用者名稱存在 ?> <script> document.querySelector(".tip").innerHTML = ‘你輸入的使用者名稱已經存在‘; </script> <?php }else { //使用者名稱， 開始註冊了 $sql = "INSERT INTO user_info ( user_name, user_pwd ) VALUES( ‘$userName‘, ‘$userPwd‘ )"; $res = mysql_query( $sql ); if( $res !== false ){ $_SESSION[‘name‘] = $userName; $_SESSION[‘pwd‘] = $userPwd; ?> <script> document.querySelector(".tip").innerHTML = ‘使用者名稱註冊成功‘; </script> <?php }else { ?> <script> document.querySelector(".tip").innerHTML = ‘使用者名稱註冊失敗‘; </script> <?php } }}?></body></html>
前端小白之每天學習記錄----php（7）session與cookie
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