How to save form information to array in php

Saving form information to an array in PHP is a very useful operation, which allows us to process form data more efficiently. Below we will explain in detail how to save form data into an array.

First, on the front-end page, we need to use HTML forms to collect information scattered on the page. After collecting the form data, we need to send it to the backend PHP script for processing. In PHP scripts, we can use the super global variable $_POST to collect form data.

For example, we have a form that collects user registration information. In HTML code, you can write like this:

<form method="POST" action="signup.php">
    <label for="username">用户名：</label>
    <input type="text" name="username" id="username">

    <label for="email">电子邮箱：</label>
    <input type="text" name="email" id="email">

    <label for="password">密码：</label>
    <input type="password" name="password" id="password">

    <input type="submit" value="注册">
</form>

Here we use a form with three input boxes for filling in username, email address and password. When the user fills out the form, clicking the signup button will submit the form data to a script called signup.php. In this script, you can use the $_POST variable to receive form data.

For example, in a script named signup.php, you can write this to process form data:

<?php
    // 处理提交的表单数据
    $username = $_POST[&#39;username&#39;];
    $email = $_POST[&#39;email&#39;];
    $password = $_POST[&#39;password&#39;];

    // 将表单数据保存到数组中
    $user_info = array(
        &#39;username&#39; => $username,
        'email' => $email,
        'password' => $password
    );

    // 打印保存的数组信息
    print_r($user_info);
?>

In the above code, use the $_POST variable to obtain the form data filled in by the user, respectively. for username, email and password. Then, we use an array to save this data. Here, we define a $user_info array, which contains the information filled in by the user.

For the above code, if we print out the $user_info array, we will get results similar to the following:

Array (
    [username] => user123
    [email] => user123@domain.com
    [password] => 123456
)

The above is the basic operation of saving form information to the array. In actual applications, this process may be more complex, requiring more form data validation and filtering operations to ensure that the final saved array data is correct.

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