This article mainly introduces the variable Sessions in PHP. Interested friends can refer to it. I hope it will be helpful to everyone.
Before you can store user information in a PHP session, you must first start the session.
Comments: session_start()
The function must be located before the tag:
<?php session_start(); ?> <html> <body> </body> </html>
#Storing and retrieving Session variables
The correct way to store and retrieve session variables is to use PHP$_SESSION Variable:
<?php session_start(); // store session data $_SESSION['views']=1; ?> <html> <body> <?php //retrieve session data echo "Pageviews=". $_SESSION['views']; ?> </body> </html>
If you want to delete some session data, you can use the unset() or session_destroy() function.
unset() function is used to release the specified session variable:
<?php session_start(); if(isset($_SESSION['views'])) unset($_SESSION['views']); ?>
session_destroy() function: ##
<?php session_destroy(); ?>
Comments:
session_destroy( )
The session will be reset and you will lose all stored session data.
E-mail Prevent injection
##FILTER_SANITIZE_EMAIL filter from string Remove illegal characters from email
FILTER_VALIDATE_EMAIL Filter validates the value of email address
Related recommendations:
HTMl5 storage methods sessionStorage and localStorage detailed explanation
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