mysql - Download automatically a file(.sql) in wwwroot using PHP -

mysql - Download automatically a file(.sql) in wwwroot using PHP -

so far here i've tried can download sql file empty

//test.php <?php header("content-type: application/octet-stream"); header('content-disposition: attachment; filename=wordpress_db1.sql'); ?>

here root folder like

i want download wordpress_db1.sql file when run test.php empty on it. how can prepare this? thanks!

setting headers doesn't read file. can name file want in attachment. have emit file:

readfile('wordpress_db1.sql');

php mysql