The difference between get and post and the code implementation of message board

One 、 Form Introduction

1、 Introduction to the form

You can get the information of the client （ data ）, Forms have a variety of controls , Input box 、 Check box 、 Button, etc . The function of forms ： Interactive functions

How forms work ： Browse a page with a form , Fill in the necessary information , Then click a submit button , Enter the data in the form Line validation , If the specified requirements are not met , Prompt that the verification failed , If the corresponding requirements are met , Submit the data to the server , Count Put the data into the database .

2、 The structure of the form

grammar ：

<form attribute =” Property value “>

Control

</form>

3、 Properties of the form

（1）name Distinguished name of the form （ If a page has multiple forms , Identify which form data you are submitting by the form identification name ）

（2）action

action="XXX.php" Process the data

action="" The program that processes the data in the form is the current document