The following PHP code is fully working when placed in the theme’s functions.php file or in a plugin. This checks the email address provided against a list of free email providers to better ensure that the only submissions you receive are using a company email address. It’s isolated to only be applied to email fields with the form field name of “company-email”.<\/p>\n
That said, this can be easily modified to do whatever validation needs to be done. Just change out the function that returns true\/false based on a condition, change the form field name it’s looking for, swap out the fail message, and change the form field that it’s applied to.<\/p>\n
Also, I hope the developer of Contact Form 7 knows how great he is for making this sort of thing possible.<\/p>\n","protected":false},"excerpt":{"rendered":" The following PHP code is fully working when placed in the theme’s functions.php file or in a plugin. This checks the email address provided against a list of free email providers to better ensure that the only submissions you receive are using a company email address. It’s isolated to only be applied to email fields […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"episode_type":"","audio_file":"","podmotor_file_id":"","podmotor_episode_id":"","cover_image":"","cover_image_id":"","duration":"","filesize":"","filesize_raw":"","date_recorded":"","explicit":"","block":"","itunes_episode_number":"","itunes_title":"","itunes_season_number":"","itunes_episode_type":"","jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[1],"tags":[],"class_list":["post-136","post","type-post","status-publish","format-standard","hentry","category-news"],"yoast_head":"\n\/\/ Add custom validation for CF7 form fields
\nfunction is_company_email($email){ \/\/ Check against list of common public email providers & return true if the email provided doesn't match one of them
\nif(
\npreg_match('\/@gmail.com\/i', $email) ||
\npreg_match('\/@hotmail.com\/i', $email) ||
\npreg_match('\/@live.com\/i', $email) ||
\npreg_match('\/@msn.com\/i', $email) ||
\npreg_match('\/@aol.com\/i', $email) ||
\npreg_match('\/@yahoo.com\/i', $email) ||
\npreg_match('\/@inbox.com\/i', $email) ||
\npreg_match('\/@gmx.com\/i', $email) ||
\npreg_match('\/@me.com\/i', $email)
\n){
\nreturn false; \/\/ It's a publicly available email address
\n}else{
\nreturn true; \/\/ It's probably a company email address
\n}
\n}
\nfunction custom_email_validation_filter($result,$tag){
\n$type = $tag['type'];
\n$name = $tag['name'];
\nif($name == 'company-email'){ \/\/ Only apply to fields with the form field name of \"comany-email\"
\n$the_value = $_POST[$name];
\nif(!is_company_email($the_value)){ \/\/ Isn't a company email address (it matched the list of free email providers)
\n$result['valid'] = false;
\n$result['reason'][$name] = 'You need to provide an email address that isn\\'t hosted by a free provider.
\nPlease contact us directly if this isn\\'t possible.';
\n}
\n}
\nreturn $result;
\n}
\nadd_filter('wpcf7_validate_email','custom_email_validation_filter', 10, 2); \/\/ Email field
\nadd_filter('wpcf7_validate_email*', 'custom_email_validation_filter', 10, 2); \/\/ Req. Email field<\/code><\/p>\n