This article describes how php uses cookies to control access authorization, and analyzes the principles and skills of Cookie-based access authorization, for more information about how php uses cookies to control access authorization, see the following example. Share it with you for your reference. The details are as follows:
The code is as follows:
<? Php
If (isset ($ _ POST ['name']) | isset ($ _ POST ['pass']) {
// If a form has been submitted
// Check the values in the form
If (empty ($ _ POST ['name']) {
Die ("Enter the user name! ");
}
If (empty ($ _ POST ['pass']) {
Die ("enter your password! ");
}
// Set Database variables
$ Host = "localhost ";
$ User = "root ";
$ Pass = "zq19890319 ";
$ Db = "cookie ";
// Open the 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 a record set is returned
If (mysql_num_rows ($ result) = 1 ){
// If one row of records is returned
// Indicates that the verification has passed
// Create a session, set a login tag to 1, and save the current user name in the cookie
Session_start ();
$ _ SESSION ['auth '] = 1;
Setcookie ("username", $ _ POST ['name'], time () + (84600*30 ));
Echo "user access authorized! ";
} Else {
Echo "incorrect user name or password! ";
}
// Release the record set
Mysql_free_result ($ result );
// Close the database
Mysql_close ($ connection );
}
Else {
// If no form is submitted, an HTML form is displayed.
?>
<? Php
}
?>
I hope this article will help you with php programming.