Help error on all sites that tunto online

[Daniel Braga]

Fatal error: Uncaught Error: Call to undefined function mysql_pconnect() in C:\xamppp\htdocs\system\database\drivers\mysql\mysql_driver.php:88 Stack trace: #0 C:\xamppp\htdocs\system\database\DB_driver.php(115): CI_DB_mysql_driver->db_pconnect() #1 C:\xamppp\htdocs\system\database\DB.php(137): CI_DB_driver->initialize() #2 C:\xamppp\htdocs\system\libraries\Loader.php(224): DB(Array, false) #3 C:\xamppp\htdocs\system\application\models\home_model.php(6): CI_Loader->database() #4 C:\xamppp\htdocs\system\libraries\Loader.php(184): home_model->__construct() #5 C:\xamppp\htdocs\system\application\controllers\home.php(7): CI_Loader->model('Home_model') #6 C:\xamppp\htdocs\system\codeigniter\CodeIgniter.php(236): Home->index() #7 C:\xamppp\htdocs\index.php(165): require_once('C:\\xamppp\\htdoc...') #8 {main} thrown in C:\xamppp\htdocs\system\database\drivers\mysql\mysql_driver.php on line 88