PHP User authentication PHP database-based user authentication code

share a PHP user-authenticated code, Based on the information stored in the database for user authentication, there is a need for friends to refer to it. PHP Implementation of user authentication of an example code, we refer to the next. Code: !--? php/*** database-based Browser authentication * edit by bbs.it-home.org*/funct Ion Authenticate_user () {header (' Www-authenticate:basic realm= ' Secret Stash "'); Header ("http/1.0 401 Unauthorized"); Exit } if (! isset ($_server[' Php_auth_user '))) {Authenticate_user (); } else {mysql_pconnect ("localhost", "authenticator", "secret") or Die ("failed to connect to database server!"); mysql_select_db ("Java2s") or Die ("failed to connect to database!"); $query = "Select Username, pswd from user WHERE username= ' $_server[php_auth_user] ' and pswd=md5 (' $_server[php_au TH_PW] "; $result = mysql_query ($query); If nothing is found, continue to display the password input prompt if (mysql_num_rows ($result) = = 0) {authenticate_user (); } }?-->

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