您好,登錄后才能下訂單哦!
小編給大家分享一下PHP實現(xiàn)簡易用戶登錄系統(tǒng),相信大部分人都還不怎么了解,因此分享這篇文章給大家參考一下,希望大家閱讀完這篇文章后大有收獲,下面讓我們一起去了解一下吧!
PHP簡易用戶登錄系統(tǒng),供大家參考,具體內(nèi)容如下
最近剛剛看到PHP連接數(shù)據(jù)庫的實例,于是做了一個簡易的用戶系統(tǒng)
直接上代碼
連接數(shù)據(jù)庫:connect.php
<?php $servername = "localhost"; $username = "formbd"; $password = "formbd"; $dbname = "form"; // 創(chuàng)建連接 $conn = new mysqli($servername, $username, $password, $dbname); // 檢測連接 if ($conn->connect_error) { die("連接失敗: " . $conn->connect_error); } ?>
用戶注冊前端頁面:reg.html
<!doctype html> <html lang="en"> <head> <meta charset="UTF-8"> <title>用戶注冊頁面</title> </head> <body> <form action="reg.php" method="post"> <p>用戶名:<input type="text" name="name"></p> <p>密 碼: <input type="text" name="password"></p> <p><input type="submit" name="submit" value="注冊"> <a href="login.html" ><input type="button" name="login" value="已有賬號,返回登錄"></a> </p> </form> </body> </html>
注冊后端處理:reg.php
<?php header("Content-Type: text/html; charset=utf8"); if(!isset($_POST['submit'])){ exit("錯誤執(zhí)行"); }//判斷是否有submit操作 $name=$_POST['name'];//post獲取表單里的name $user_password=$_POST['password'];//post獲取表單里的password include('connect.php');//鏈接數(shù)據(jù)庫 $q="insert into user(id,username,password) values (null,'$name','$user_password')";//向數(shù)據(jù)庫插入表單傳來的值的sql $sql = "select * from user where username = '$name'"; if (($conn->query($sql))==$name) { echo '用戶名已存在'; $result = $conn->query($sql); /*echo " <script> setTimeout(function(){window.location.href='reg.html';},1000); </script> ";*/ } else { $conn->query($q); echo "注冊成功"; echo " <script> setTimeout(function(){window.location.href='login.html';},1000); </script> "; } $conn->close();//關(guān)閉數(shù)據(jù)庫 ?>
用戶登錄前端頁面:login.html
<!doctype html> <html lang="en"> <head> <meta charset="UTF-8"> <title>登陸</title> </head> <body> <form name="login" action="login.php" method="post"> <p>用戶名<input type=text name="name"></p> <p>密 碼<input type=password name="password"></p> <p><input type="submit" name="submit" value="登錄"> <a href="reg.html" ><input type="button" name="reg" value="注冊"></a> </p> </form> </body> </html>
登錄后端處理:login.php
<?PHP header("Content-Type: text/html; charset=utf8"); if(!isset($_POST["submit"])){ exit("錯誤執(zhí)行"); }//檢測是否有submit操作 include('connect.php');//鏈接數(shù)據(jù)庫 $name = $_POST['name'];//post獲得用戶名表單值 $passowrd = $_POST['password'];//post獲得用戶密碼單值 if ($name && $passowrd){//如果用戶名和密碼都不為空 $sql = "select * from user where username = '$name' and password='$passowrd'";//檢測數(shù)據(jù)庫是否有對應(yīng)的username和password的sql $result = $conn->query($sql);//執(zhí)行sql $rows=$result->fetch_assoc();//返回一個數(shù)值 if($rows){//0 false 1 true header("refresh:0;url=success.php");//如果成功跳轉(zhuǎn)至success.php頁面 exit; }else{ echo "用戶名或密碼錯誤"; echo " <script> setTimeout(function(){window.location.href='login.html';},1000); </script> ";//如果錯誤使用js 1秒后跳轉(zhuǎn)到登錄頁面重試; } }else{//如果用戶名或密碼有空 echo "表單填寫不完整"; echo " <script> setTimeout(function(){window.location.href='login.html';},1000); </script>"; //如果錯誤使用js 1秒后跳轉(zhuǎn)到登錄頁面重試; } $conn->close();//關(guān)閉數(shù)據(jù)庫 ?>
登錄成功后:success.php
PS:功能未完善
<?php include 'connect.php'; session_start(); //聲明變量 $username = isset($_SESSION['nmae']) ? $_SESSION['name'] : ""; ?>
<!doctype html> <html lang="en"> <head> <meta charset="UTF-8"> <title>登陸成功</title> </head> <body> 歡迎光臨 <?php echo $username;?> <?php ?> </body> </html>
以上是“PHP實現(xiàn)簡易用戶登錄系統(tǒng)”這篇文章的所有內(nèi)容,感謝各位的閱讀!相信大家都有了一定的了解,希望分享的內(nèi)容對大家有所幫助,如果還想學(xué)習(xí)更多知識,歡迎關(guān)注億速云行業(yè)資訊頻道!
免責(zé)聲明:本站發(fā)布的內(nèi)容(圖片、視頻和文字)以原創(chuàng)、轉(zhuǎn)載和分享為主,文章觀點不代表本網(wǎng)站立場,如果涉及侵權(quán)請聯(lián)系站長郵箱:is@yisu.com進行舉報,并提供相關(guān)證據(jù),一經(jīng)查實,將立刻刪除涉嫌侵權(quán)內(nèi)容。