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?? ??
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- PHP(?? 7.4 ??)
- MySQL(?? MariaDB)
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- VS Code? ?? ?? ???
1??: ?? ??
- ?? ??(?: XAMPP)? ?????.
- Apache ? MySQL ???? ?????.
- ? ?? ????(XAMPP? htdocs)? ???? todo_app??? ? ??? ????.
2??: ?????? ??
- phpMyAdmin? ???.
- todo_app??? ? ??????? ????.
- ?? ???? ????? ?? SQL ??? ?????.
sql CREATE TABLE tasks ( id INT AUTO_INCREMENT PRIMARY KEY, task VARCHAR(255) NOT NULL, created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP );
3??: HTML ????? ??
todo_app ??? index.php ??? ??? ?? HTML? ?????.
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>To-Do List App</title> <link rel="stylesheet" href="styles.css"> </head> <body> <div> <hr> <h2> Step 4: Handle Adding Tasks </h2> <p>Create a new file called <em>add_task.php</em> and add the following code:<br> </p> <pre class="brush:php;toolbar:false"><?php if ($_SERVER['REQUEST_METHOD'] === 'POST') { $task = $_POST['task']; // Connect to the database $conn = new mysqli("localhost", "root", "", "todo_app"); // Insert the task into the database $stmt = $conn->prepare("INSERT INTO tasks (task) VALUES (?)"); $stmt->bind_param("s", $task); $stmt->execute(); $stmt->close(); $conn->close(); // Redirect back to the main page header("Location: index.php"); exit(); } ?>
5??: ?? ?? ??
delete_task.php?? ? ??? ????.
<?php if (isset($_GET['id'])) { $id = $_GET['id']; // Connect to the database $conn = new mysqli("localhost", "root", "", "todo_app"); // Delete the task from the database $stmt = $conn->prepare("DELETE FROM tasks WHERE id = ?"); $stmt->bind_param("i", $id); $stmt->execute(); $stmt->close(); $conn->close(); // Redirect back to the main page header("Location: index.php"); exit(); } ?>
6??: ?? CSS ??(?? ??)
?? ??? styles.css ??? ??? ? ???? ?????.
body { font-family: Arial, sans-serif; background-color: #f9f9f9; color: #333; margin: 0; padding: 0; } .container { width: 50%; margin: 50px auto; background: #fff; padding: 20px; box-shadow: 0 0 10px rgba(0, 0, 0, 0.1); border-radius: 8px; } h1 { text-align: center; } form { display: flex; justify-content: space-between; margin-bottom: 20px; } form input { flex: 1; padding: 10px; margin-right: 10px; border: 1px solid #ccc; border-radius: 4px; } form button { padding: 10px 20px; background-color: #28a745; color: white; border: none; border-radius: 4px; cursor: pointer; } form button:hover { background-color: #218838; } ul { list-style-type: none; padding: 0; } ul li { display: flex; justify-content: space-between; padding: 10px; border-bottom: 1px solid #ddd; } ul li a { color: #dc3545; text-decoration: none; }
7??: ?????? ??
- ????? ?? http://localhost/todo_app/index.php? ?????.
- ?? ??? ???? ???? ?????. ?
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??? ??? ?? ??????. PHP??? ???? ?????. ??? IEEE754 ?? ??? ??? ???? ??? ??? ???? ??? ? ?? ????. 1.0.1 ?? 0.2? ?? ??? ??? ?? ?? ???? ???? ??? ???? ?? ??????. 2. ?? ??? ??? ??? ?? abs ($ a- $ b)? ?? == ?? ??? ???????.

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