PHP Snippet to implement the contact form redirection

thank-you.php

add_action( 'wp_footer', 'redirect_cf7' );

function redirect_cf7() {
?>
<script type="text/javascript">
document.addEventListener( 'wpcf7mailsent', function( event ) {
   if ( '1460' == event.detail.contactFormId ) { // Sends sumissions on form 1460 to the custom thank you page
    location = 'https://example.com/thank-you/';
}
}, false ); 
</script>
<?php