A PHP Error was encountered

Severity: Notice

Message: Only variables should be assigned by reference

Filename: core/Loader.php

Line Number: 150

Fatal error: Uncaught Error: Call to undefined function mysql_connect() in /home/karirpad/public_html/system/database/drivers/mysql/mysql_driver.php:73 Stack trace: #0 /home/karirpad/public_html/system/database/DB_driver.php(115): CI_DB_mysql_driver->db_connect() #1 /home/karirpad/public_html/system/database/DB.php(148): CI_DB_driver->initialize() #2 /home/karirpad/public_html/system/core/Loader.php(346): DB(Array, NULL) #3 /home/karirpad/public_html/system/core/Loader.php(1171): CI_Loader->database() #4 /home/karirpad/public_html/system/core/Loader.php(152): CI_Loader->_ci_autoloader() #5 /home/karirpad/public_html/system/core/Controller.php(51): CI_Loader->initialize() #6 /home/karirpad/public_html/application/controllers/Ats.php(5): CI_Controller->__construct() #7 /home/karirpad/public_html/system/core/CodeIgniter.php(308): ats->__construct() #8 /home/karirpad/public_html/index.php(316): require_once('/home/karirpad/...') #9 {main} thrown in /home/karirpad/public_html/system/database/drivers/mysql/mysql_driver.php on line 73