Question

In wordpress’s function.php the functions are written to check validate fields, return errors and if no errors, send email.

so in separate page template, it has <form action="" method="post"> so how to call functions from function.php?

Is it <form action="form-progress()" method="post"> ?

Any guide or insight will be appreciated.

Answer 1

Well actually what you can do is this:

if(!$_POST) :
echo '
<form method="post" action="[your-same-page]">
[your-form-goes-here]
</form>';
else :
form_progress();
endif;

this way, when your user clicks submit, it will enter the else part and check the form.

If you want to verify required fields or something:

if(!$_POST || required_fields( $_POST ) != true ) :
echo '
<form method="post" action="[your-same-page]">
[your-form-goes-here]
</form>';
else :
form_progress();
endif;

I hope this is what you were asking!