Replace a blank email form field with a email address

[system]

Hi,
I’m new to PHP and trying to replace an email address form field if left blank with a default email address.

[php]<?php if(get_field('cemail')) { ?>

<?php $email = (get_field('cemail')); if($email!=""){ echo 'email address' ; } ?> [/php]

[astonecipher]

I don’t know where you are learning PHP, but you should probably find a new source.

Don’t know what get_field is for.