Variable Sessions in PHP

This article mainly introduces the variable Sessions in PHP, the interested friend's reference, hope to be helpful to everybody.

Before you store user information in a PHP session, you must first start the session.

notes: The session_start () function must precede the

<?php session_start ();?>


Storing and retrieving session variables

The correct way to store and retrieve session variables is to use the PHP$_session variable:


 

 
  
 
   
<?phpsession_start ();//store session data$_session[' views ']=1;? >
 
 
  

 


Destroy session

If you want to delete some session data, you can use the unset () or Session_destroy () function.

The unset () function is used to release the specified session variable:


 

 
  
 
   
<?phpsession_start (); if (Isset ($_session[' views ")) unset ($_session[' views ']);? >
 
  

 
The session is completely destroyed by calling the Session_destroy () function:


 

 
  
 
   
<?phpsession_destroy ();? >
 
  

 
notes: Session_destroy () resets the session and you will lose all stored session data. 

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Filter_validate_email Filter Verify the value of the e-mail address