How to call methods in php to transfer data

With the development of Web development technology, more and more websites are developed and run using HTML5 and PHP. HTML5 serves as the display framework of the page, while PHP serves as the back-end processing language to realize data interaction and processing. . In this process, the interaction between HTML and PHP is very important. HTML realizes the transmission and exchange of data by calling PHP methods. Then this article will introduce how HTML implements data transfer methods and application scenarios by calling PHP methods.

1. How HTML calls PHP methods

HTML calls PHP methods, generally using the GET or POST method to pass data to the PHP code through URL or form.

1. GET method

Add parameters in the URL to pass data, for example:

<a href="test.php?name=Tom&age=18">点击测试</a>

In PHP code, you can obtain data through the $_GET method:

<?php
$name = $_GET[&#39;name&#39;];
$age = $_GET[&#39;age&#39;];
echo "我的名字是" . $name . "，年龄是" . $age;
?>

2. POST method

Transfer data to the PHP code through the form, for example:

<form action="test.php" method="post">
    <label for="name">姓名:</label>
    <input type="text" name="name" id="name">
    <br>
    <label for="age">年龄:</label>
    <input type="number" name="age" id="age">
    <br>
    <input type="submit" value="提交">
</form>

In the PHP code, you can pass $_POST Method to obtain data:

<?php
$name = $_POST[&#39;name&#39;];
$age = $_POST[&#39;age&#39;];
echo "我的名字是" . $name . "，年龄是" . $age;
?>

2. Application scenarios for calling PHP methods

HTML has a wide range of application scenarios for calling PHP methods, mainly including the following aspects:

1. Form verification

Before the form is submitted, the information in the form needs to be verified, such as user name and password, email and mobile phone number, etc. This needs to be achieved by calling the PHP method in HTML.

2. Data processing

After the user submits the form, the data needs to be processed into a unified format, such as HTML formatting of text information, formatting of numbers, etc. , can be achieved through PHP method.

3. Database Operation

When operations need to be performed on the database, such as registration, login, data addition, modification and deletion, etc., this is achieved by calling PHP methods through HTML. Pass the user's operations to PHP for processing.

4. E-mail sending

When you need to send some information from the website to the user's mailbox by email, you can use PHP's email sending method to achieve this.

5. File Upload

When you need to upload a file, you can call the PHP method in HTML to pass the uploaded file to PHP for processing.

6. Third-party interface call

When you need to call a third-party API interface, you can call the PHP method in HTML to pass the user's request to PHP, and then PHP Call third-party interfaces through CURL and other methods to return the results to the user.

Summary

This article introduces how HTML can realize data transmission methods and application scenarios by calling PHP methods. By calling PHP methods through HTML, data verification, processing, database operations, email sending, Functions such as file upload and third-party interface calling provide richer and more flexible application methods for Web development.

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