How to pass values ​​between different pages in php

php methods to implement value transfer between different pages: 1. Use require_once to implement; 2. Use form submission to implement; 3. Use SESSION sessions to implement; 4. Use COOKIE to implement.

The method is as follows:

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Method one: require_once

//Page a:
    
//Page b:
    

Method 2: Carrying parameters and passing values ​​when jumping through the page

//Page a:

    点我跳到b.php
//Page b:

Method 3: Form submission

  
  

//2.php：

Method 4: SESSION session

(SESSION is a global variable. As long as it is declared, it is available on all pages until the web page is closed or the cycle of SESSION is not reached, and POST and GET will be released immediately as soon as PHP is executed)

Method five: cookies.

Cookie is stored on the client (also a global variable), and session is stored on the server. This is the only difference between the two.

Method 6: Store in the database and then retrieve it

The advantage is: it can be stored for a long time.

The disadvantage is that every time it needs to be used, it needs to be queried in the database, which consumes a lot of resources.

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