Warning: mysqli_select_db() expects parameter 1 to be mysqli, string given in /home/elcomer/public_html/funciones.php on line 20

Fatal error: Uncaught Error: Call to undefined function mysql_query() in /home/elcomer/public_html/boletin.php:4 Stack trace: #0 {main} thrown in /home/elcomer/public_html/boletin.php on line 4