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Fatal error: Uncaught Error: Call to undefined function mysql_error() in D:\xampp\htdocs\reg\workshop_dec17\library\opendb.php:5 Stack trace: #0 D:\xampp\htdocs\reg\workshop_dec17\login.php(4): require_once() #1 {main} thrown in D:\xampp\htdocs\reg\workshop_dec17\library\opendb.php on line 5