anshul upadhyay

<?php if( function_exists( ‘cptch_display_captcha_custom’ ) ) { echo “<input type=’hidden’ name=’cntctfrm_contact_action’ value=’true’ />”; echo cptch_display_captcha_custom(); } ?>

i have used above line in my form. How to make it required.
Form should not submitted if it is wrong.

I am using plugin but my form is submitted without filling captcha

my google code is ga(‘send’, { ‘hitType’: ‘pageview’, ‘page’: ‘/email/subscribed/’, ‘title’: ‘Email Subscribe Success’ });