Let's talk about how to change the form submission method from POST to GET in PHP

With the increasing development of the Internet, the use of forms has become an essential skill for network development. In the development process, the choice of form submission method is very important, and in the process of using the form, GET and POST are the two most widely used form submission methods. However, in some specific usage scenarios, we need to change the default form submission method to meet some special requirements. This article will introduce how to change the way A.PHP submits the form from POST to GET.

The difference between GET and POST submission methods

GET and POST are the two most commonly used submission methods in the HTTP protocol. There are the following differences between them:

# The data submitted by ##GET will be appended to the URL and appear in the form of
1. query string, while the data submitted by POST will be sent in the form of an HTTP message and included in the request body.
The data submitted by GET has a length limit, and different browsers and servers have different length limit settings; while the data submitted by POST has no length limit (although there are certain restrictions in actual situations).
2. The GET request will put the form data in the URL, which may be intercepted by malware or hackers, causing security issues, while the POST request is relatively safe.

Therefore, when choosing a form submission method, you need to consider factors such as data security, data length, and data transmission method. In some special scenarios, it is necessary to choose the appropriate submission method according to specific needs.

Change the A.PHP form submission method to GET

Suppose we have an A.PHP page that contains a form that uses the POST submission method to submit data to B.PHP for processing , and receive the processing results. Now we want to change the A.PHP form submission method to GET. How to achieve this?

Modify the form submission method

First, we need to modify the form submission method in A.PHP and change it from POST to GET. The following is a form using the POST submission method:

<form action="B.PHP" method="post">
  <input type="text" name="name">
  <input type="submit" value="提交">
</form>

In order to change the submission method to GET, we only need to set the

method attribute to get:

<form action="B.PHP" method="get">
  <input type="text" name="name">
  <input type="submit" value="提交">
</form>

In this way, when the user clicks the submit button of the form, the form data will be submitted to B.PHP in GET mode instead of POST mode.

Modify the server receiving method

Since we changed the form submission method from POST to GET, the way B.PHP receives data also needs to be modified accordingly.

In POST mode, B.PHP's code for processing form data is usually like this:

$name = $_POST['name'];

And in GET mode, we need to use

$_GET to receive Form data:

$name = $_GET['name'];

So that the form data can be received correctly in GET mode.

Enhance data security

It should be noted that when using the GET method to send form data, the data will appear in the URL. Therefore, if the data contains some sensitive information, it needs to be handled with caution.

In order to enhance data security, some technical means can be used to encrypt the URL to prevent sensitive data from being maliciously intercepted. Commonly used encryption technologies include MD5, SHA, etc.

Summary

In network development, the use of forms will inevitably involve the choice of form submission methods. GET and POST are two commonly used submission methods, each with their own advantages and disadvantages. Of course, in specific scenarios, we can also modify the form submission method according to specific needs to achieve a more flexible data transmission method.

This article introduces how to change the A.PHP form submission method from POST to GET, making the code more flexible and adaptable to different needs. At the same time, we also remind you to pay attention to data security and protect user information from being attacked by criminals.

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