When I run the code from the lesson and click on the "submit" button it opens the PHP file. How I can POST the data to the PHP f

Answer 1

code please

Answer 2

i suggest you start the html course to fully understand that

Answer 3

with html
#php is an external file also use
#action="url_to.php"
<form method="POST">
<input type="text" name="variable">
<input type="submit">
</form>