This file processes the submitted form data, validates it, and stores it in a session. Here's the code:\n<\/p>\n\n
\n\n\n\n\n \n \n Form Submission Result<\/title>\n<\/head>\n<body> <h1><a href="http://www.miracleart.cn/">国产av日韩一区二区三区精品,成人性爱视频在线观看,国产,欧美,日韩,一区,www.成色av久久成人,2222eeee成人天堂</a></h1>\n <h1>Form Submission Result<\/h1>\n\n <!-- Show Errors if any -->\n <?php\n if ($error_name) {\n echo \"<p>\n\n\n\n\n<hr>\n\n<h3>\n \n \n Step 3: Viewing Session Data (view_session.php)\n<\/h3>\n\n<p>This file displays session data stored on the server.<br>\n<\/p>\n\n<pre><?php session_start(); ?>\n<!DOCTYPE html>\n<html lang=\"en\">\n<head>\n <meta charset=\"UTF-8\">\n <meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\">\n <title>View Session Data<\/title>\n<\/head>\n<body>\n <h1>View Stored Session Data<\/h1>\n\n <?php\n if (isset($_SESSION['name'])) {\n echo \"<p><strong>Name:<\/strong> \" . $_SESSION['name'] . \"<\/p>\";\n echo \"<p><strong>Age:<\/strong> \" . $_SESSION['age'] . \"<\/p>\";\n echo \"<p><strong>Email:<\/strong> \" . $_SESSION['email'] . \"<\/p>\";\n echo \"<p><strong>Website:<\/strong> <a href='\" . $_SESSION['website'] . \"' target='_blank'>\" . $_SESSION['website'] . \"<\/a><\/p>\";\n echo \"<p><strong>Gender:<\/strong> \" . $_SESSION['gender'] . \"<\/p>\";\n echo \"<p><strong>Hobbies:<\/strong> \" . $_SESSION['hobbies'] . \"<\/p>\";\n echo \"<p><strong>Comments:<\/strong> \" . $_SESSION['comments'] . \"<\/p>\";\n } else {\n echo \"<p>No session data found!<\/p>\";\n }\n ?>\n\n <br><br>\n <a href=\"index.php\">Go Back<\/a>\n<\/body>\n<\/html>\n<\/pre>\n\n\n\n\n<hr>\n\n<h3>\n \n \n Step 4: Deleting Session Data (delete_session.php)\n<\/h3>\n\n<p>This file destroys the session data.<br>\n<\/p>\n\n<pre><?php\nsession_start();\nsession_unset(); \/\/ Remove all session variables\nsession_destroy(); \/\/ Destroy the session\n?>\n\n<!DOCTYPE html>\n<html lang=\"en\">\n<head>\n <meta charset=\"UTF-8\">\n <meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\">\n <title>Session Deleted<\/title>\n<\/head>\n<body>\n <h1>Session Data Deleted<\/h1>\n <p>All session data has been deleted successfully.<\/p>\n <br><br>\n <a href=\"index.php\">Go Back<\/a>\n<\/body>\n<\/html>\n<\/pre>\n\n\n\n\n<hr>\n\n<h3>\n \n \n Key Concepts Covered\n<\/h3>\n\n<ol>\n<li>\n<p><strong>Form Handling:<\/strong><\/p>\n\n<ul>\n<li>Fetching data using the GET method.<\/li>\n<li>Validating inputs with conditions and filters.<\/li>\n<li>Sanitizing inputs with htmlspecialchars().<\/li>\n<\/ul>\n<\/li>\n<li>\n<p><strong>Sessions:<\/strong><\/p>\n\n<ul>\n<li>Starting a session with session_start().<\/li>\n<li>Storing data in<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n<p>the $_SESSION array.<\/p><\/pre>\n<ul>\n<li>Viewing session data.<\/li>\n<li>Deleting session data using session_unset() and session_destroy().<\/li>\n<\/ul>\n\n\n<hr>\n\n<h3>\n \n \n Conclusion\n<\/h3>\n\n<p>This project demonstrates the basics of PHP form handling and session management. With these concepts, you can build more complex applications that handle user input securely and efficiently. Experiment with the code, and try extending it by adding features like database integration or more advanced validation.<\/p>\n\n<p>Happy coding! ?<\/p>\n\n\n \n\n \n "} </script> <meta http-equiv="Cache-Control" content="no-transform" /> <meta http-equiv="Cache-Control" content="no-siteapp" /> <script>var V_PATH="/";window.onerror=function(){ return true; };</script> </head> <body data-commit-time="2023-12-28T14:50:12+08:00" class="editor_body body2_2"> <link rel="stylesheet" type="text/css" href="/static/csshw/stylehw.css"> <header> <div id="377j5v51b" class="head"> <div id="377j5v51b" class="haed_left"> <div id="377j5v51b" class="haed_logo"> <a href="http://www.miracleart.cn/" title="" class="haed_logo_a"> <img src="/static/imghw/logo.png" alt="" class="haed_logoimg"> </a> </div> <div id="377j5v51b" class="head_nav"> <div id="377j5v51b" class="head_navs"> <a href="javascript:;" title="Community" class="head_nava head_nava-template1">Community</a> <div class="377j5v51b" 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class="phpgenera_Details_mainL1a">PHP Tutorial</a> <img src="/static/imghw/top_right.png" alt="" /> <span>Beginner&#s Guide to PHP Form Handling with Sessions</span> </div> <div id="377j5v51b" class="Articlelist_txts"> <div id="377j5v51b" class="Articlelist_txts_info"> <h1 class="Articlelist_txts_title">Beginner&#s Guide to PHP Form Handling with Sessions</h1> <div id="377j5v51b" class="Articlelist_txts_info_head"> <div id="377j5v51b" class="author_info"> <a href="http://www.miracleart.cn/member/1468491.html" class="author_avatar"> <img class="lazy" data-src="https://img.php.cn/upload/avatar/000/000/001/66ea815b78d13863.png" src="/static/imghw/default1.png" alt="Patricia Arquette"> </a> <div id="377j5v51b" class="author_detail"> <a href="http://www.miracleart.cn/member/1468491.html" class="author_name">Patricia Arquette</a> </div> </div> </div> <span id="377j5v51b" class="Articlelist_txts_time">Dec 04, 2024 pm 09:11 PM</span> </div> </div> <hr /> <div id="377j5v51b" class="article_main php-article"> <div id="377j5v51b" class="article-list-left detail-content-wrap content"> <ins class="adsbygoogle" style="display:block; text-align:center;" data-ad-layout="in-article" data-ad-format="fluid" data-ad-client="ca-pub-5902227090019525" data-ad-slot="3461856641"> </ins> <p><img src="/static/imghw/default1.png" data-src="https://img.php.cn/upload/article/000/000/000/173331787594346.jpg" class="lazy" alt="Beginner"></p> <p>If you're new to PHP and want to learn how to handle forms and work with session data, this guide is for you. We'll build a simple project where a user can submit a form, save the data in a session, view it, and delete it later. By the end of this tutorial, you'll understand the basics of PHP form handling, validation, sanitization, and sessions.</p> <hr> <h2> What is Form Handling in PHP? </h2> <p>Form handling refers to the process of capturing data submitted through an HTML form and processing it in a server-side language like PHP. This includes:</p> <ol> <li> <strong>Fetching the form data:</strong> Using methods like GET or POST.</li> <li> <strong>Validating the data:</strong> Ensuring the input meets specific criteria.</li> <li> <strong>Sanitizing the data:</strong> Cleaning the input to prevent security issues like XSS attacks.</li> <li> <strong>Storing or processing the data:</strong> Saving it in sessions, databases, or displaying it back to the user.</li> </ol> <hr> <h2> What Are Sessions in PHP? </h2> <p>Sessions are a way to store information (variables) across multiple pages for a single user. Unlike cookies, session data is stored on the server, making it more secure. To start using sessions in PHP, we use the session_start() function.</p> <hr> <h2> The Project: PHP Form with Session Handling </h2> <p>Our project involves the following features:</p> <ul> <li>A user fills out a form with personal information.</li> <li>The submitted data is validated and sanitized.</li> <li>Valid data is stored in a session.</li> <li>Users can view or delete the session data.</li> </ul> <hr> <h3> File Structure </h3> <p>Here's the structure of our project:<br> </p> <pre class="brush:php;toolbar:false">project-folder/ │ ├── index.php # Form page ├── submit.php # Form handling and session storage ├── view_session.php # Viewing session data ├── delete_session.php # Deleting session data </pre> <hr> <h3> Step 1: Creating the Form (index.php) </h3> <p>The index.php file contains a simple HTML form where users can input their details. Here's the code:<br> </p> <pre class="brush:php;toolbar:false"><?php session_start(); ?> <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>PHP Form with Session Handling</title> </head> <body> <h1>Submit Your Information</h1> <!-- Form Section for User Input --> <form method="get" action="submit.php"> <label for="name">Name:</label><br> <input type="text"> <hr> <h3> Step 2: Handling Form Submission (submit.php) </h3> <p>This file processes the submitted form data, validates it, and stores it in a session. Here's the code:<br> </p> <pre class="brush:php;toolbar:false"><?php session_start(); // Initialize error messages and data variables $error_name = ""; $error_age = ""; $error_email = ""; $error_website = ""; $name = $age = $email = $website = $gender = $comments = $hobbies = ""; // Sanitize and validate the form data if ($_SERVER["REQUEST_METHOD"] == "GET") { // Sanitize inputs $name = htmlspecialchars(trim($_GET['name'])); $age = htmlspecialchars(trim($_GET['age'])); $email = htmlspecialchars(trim($_GET['email'])); $website = htmlspecialchars(trim($_GET['website'])); $gender = isset($_GET['gender']) ? $_GET['gender'] : 'No gender selected.'; $hobbies = isset($_GET['hobbies']) ? $_GET['hobbies'] : ['No hobby selected.']; $comments = htmlspecialchars(trim($_GET['comments'])); // Validation checks if (empty($name)) { $error_name = "Name is required."; } if (empty($age) || !filter_var($age, FILTER_VALIDATE_INT) || $age <= 0) { $error_age = "Valid age is required."; } if (empty($email) || !filter_var($email, FILTER_VALIDATE_EMAIL)) { $error_email = "Valid email is required."; } if (empty($website) || !filter_var($website, FILTER_VALIDATE_URL)) { $error_website = "Valid website URL is required."; } // If no errors, store data in session if (empty($error_name) && empty($error_age) && empty($error_email) && empty($error_website)) { // Store data in session $_SESSION['name'] = $name; $_SESSION['age'] = $age; $_SESSION['email'] = $email; $_SESSION['website'] = $website; $_SESSION['gender'] = $gender; $_SESSION['hobbies'] = implode(", ", $hobbies); $_SESSION['comments'] = $comments; } } ?> <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Form Submission Result</title> </head> <body> <h1>Form Submission Result</h1> <!-- Show Errors if any --> <?php if ($error_name) { echo "<p> <hr> <h3> Step 3: Viewing Session Data (view_session.php) </h3> <p>This file displays session data stored on the server.<br> </p> <pre class="brush:php;toolbar:false"><?php session_start(); ?> <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>View Session Data</title> </head> <body> <h1>View Stored Session Data</h1> <?php if (isset($_SESSION['name'])) { echo "<p><strong>Name:</strong> " . $_SESSION['name'] . "</p>"; echo "<p><strong>Age:</strong> " . $_SESSION['age'] . "</p>"; echo "<p><strong>Email:</strong> " . $_SESSION['email'] . "</p>"; echo "<p><strong>Website:</strong> <a href='" . $_SESSION['website'] . "' target='_blank'>" . $_SESSION['website'] . "</a></p>"; echo "<p><strong>Gender:</strong> " . $_SESSION['gender'] . "</p>"; echo "<p><strong>Hobbies:</strong> " . $_SESSION['hobbies'] . "</p>"; echo "<p><strong>Comments:</strong> " . $_SESSION['comments'] . "</p>"; } else { echo "<p>No session data found!</p>"; } ?> <br><br> <a href="index.php">Go Back</a> </body> </html> </pre> <hr> <h3> Step 4: Deleting Session Data (delete_session.php) </h3> <p>This file destroys the session data.<br> </p> <pre class="brush:php;toolbar:false"><?php session_start(); session_unset(); // Remove all session variables session_destroy(); // Destroy the session ?> <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Session Deleted</title> </head> <body> <h1>Session Data Deleted</h1> <p>All session data has been deleted successfully.</p> <br><br> <a href="index.php">Go Back</a> </body> </html> </pre> <hr> <h3> Key Concepts Covered </h3> <ol> <li> <p><strong>Form Handling:</strong></p> <ul> <li>Fetching data using the GET method.</li> <li>Validating inputs with conditions and filters.</li> <li>Sanitizing inputs with htmlspecialchars().</li> </ul> </li> <li> <p><strong>Sessions:</strong></p> <ul> <li>Starting a session with session_start().</li> <li>Storing data in</li> </ul> </li> </ol> <p>the $_SESSION array.</p></pre> <ul> <li>Viewing session data.</li> <li>Deleting session data using session_unset() and session_destroy().</li> </ul> <hr> <h3> Conclusion </h3> <p>This project demonstrates the basics of PHP form handling and session management. With these concepts, you can build more complex applications that handle user input securely and efficiently. Experiment with the code, and try extending it by adding features like database integration or more advanced validation.</p> <p>Happy coding! ?</p> <p>The above is the detailed content of Beginner&#s Guide to PHP Form Handling with Sessions. For more information, please follow other related articles on the PHP Chinese website!</p> </div> </div> <div id="377j5v51b" class="wzconShengming_sp"> <div id="377j5v51b" class="bzsmdiv_sp">Statement of this Website</div> <div>The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. 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