PHP uses cookies to control access authorization methods, Phpcookie Access Authorization _php Tutorial

PHP uses cookies to control access authorization methods, Phpcookie access authorization

This example describes how PHP uses cookies to control access authorization. Share to everyone for your reference. Specific as follows:

Copy CodeThe code is as follows: <?php
if (isset ($_post[' name ')) | | Isset ($_post[' pass ')) {
If a form has been submitted
Detect required values in a form
if (Empty ($_post[' name '])) {
Die ("Please enter user name! ");
}
if (Empty ($_post[' pass '))) {
Die ("Please enter the password!") ");
}
Setting Database variables
$host = "localhost";
$user = "root";
$pass = "zq19890319";
$db = "Cookie";
Open connection
$connection = mysql_connect ($host, $user, $pass) or die ("Unable to connect!");
Select a database
mysql_select_db ($db) or Die ("Unable to select database!");
Create a query
$query = "SELECT * from users WHERE name = '". $_post[' name ']. "' and pass = SHA1 (' ". $_post[' Pass ')." ";
Execute a query
$result = mysql_query ($query) or Die ("Error in Query: $query.". Mysql_error ());
Whether there is a recordset returned
if (mysql_num_rows ($result) = = 1) {
If a row of records returns
Indicates that validation has passed
Create a session, set a login flag to 1, and save the current user name in a cookie
Session_Start ();
$_session[' auth '] = 1;
Setcookie ("username", $_post[' name '], time () + (84600*30));
echo "User access is authorized! ";
}else{
echo "Wrong user name or password! ";
}
Release recordset
Mysql_free_result ($result);
Close the database
Mysql_close ($connection);
}
else{
If there is no form submission, an HTML form is displayed
?>

<?php
}
?>

I hope this article is helpful to everyone's PHP programming.

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