直入主題，先看php校正登入名稱和密碼是否正確的代碼：
<?php $servername = "伺服器名"; $username = "賬戶名"; $password = "密碼"; $dbname = "資料庫名";?><?php // Session需要先啟動。 session_start(); //判斷uname和pwd是否賦值 if(isset($_POST['uname']) && isset($_POST['pwd'])){ $name = $_POST['uname']; $pwd = $_POST['pwd']; //串連資料庫 $conn = new mysqli($servername, $username, $password, $dbname); if ($conn->connect_error) { die("Connection failed: " . $conn->connect_error); } //驗證內容是否與資料庫的記錄吻合。 $sql = "SELECT * FROM test_students_all WHERE (student_name='$name') AND (password='$pwd')"; //執行上面的sql語句並將結果集賦給result。 $result = $conn->query($sql); //判斷結果集的記錄數是否大於0 if ($result->num_rows > 0) { $_SESSION['user_account'] = $name; // 輸出每行資料 while($row = $result->fetch_assoc()) { echo '<p>' . $row['student_nbr'] . '<br/>' . $row['student_name'] . '(' . $row['sex'] . ')' . '<br/>' . $row['class'] . '<br/>' . $row['major'].'</p>'; // <p><img src="student_images/CLASS/STUDENT_NBR.jpg" /></p> echo '<p><img src="student_images/' . $row['class'] . '/' . $row['student_nbr'] . '.jpg" /></p>'; } } else { echo "沒有您要的資訊"; } $conn->close(); }?><!DOCTYPE html><html lang="en"><head> <meta charset="UTF-8"> <title>登入校正</title></head><body> <p> <?php // isset(xx) 測試xx是否設定了 if(isset($_SESSION['user_account'])){ echo '你好，' . $_SESSION['user_account']; } else{ echo '遊客'; } //$conn->close(); ?> </p> <form method="POST"> <input type="text" name="uname" placeholder="使用者名稱" /> <br /> <input type="password" name="pwd" placeholder="密碼" /> <br /> <input type="submit"> </form></body></html>
效果圖：
以上就是本文的全部內容，希望對大家學習php程式設計有所協助。
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