How to pass value in php page

When we create dynamic websites, we often use the method of passing values to the page to transfer information. Below we will introduce to you how to pass values on pages in PHP.

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##Method 1: require_once

When you access b.php you will get: hello world!

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

Method 3: Form submission:

Method 4: SESSION session.

　（SESSION is a global variable. As long as it is declared, it is available on all pages without closing the webpage or before the SESSION cycle. POST and GET will be available as long as PHP is executed. Will be released immediately)

Method 5: cookie.

The cookie is stored on the client (also a global variable), and the 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 you need to use it, you need to query it in the database, which consumes a lot of resources.

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