Contact Form 7 spam block

contact-form-7-spam-block.php

<?php

// wpcf7_validate + _textarea* or _text* etc
add_filter( 'wpcf7_validate_textarea*', 'textarea_confirmation_validation_filter', 20, 2 );
function textarea_confirmation_validation_filter( $result, $tag ) {
  // your-message much match what the tag name has been set 
  if ( 'your-message' == $tag->name ) {  
    $your_message = isset( $_POST['your-message'] ) ? trim( $_POST['your-message'] ) : '';	
	if ( preg_match('/href|google|lottery|seo|http|latex|gloves|youtube|instagram|monetize|invest|\$|\@|www\./i', $your_message ) ){
		$result->invalidate( $tag, "Your message contains invalid words that are not allowed, please rephrase. only put your email address in the email section, No website links or any of these words: href, google, seo, http, latex, gloves, youtube, instagram, monetize, invest, $" );
	}
	
  }
  return $result;
}