The comment_email WordPress PHP filter allows you to modify the comment author’s email for display purposes. Be cautious when using this filter to protect the email address from email harvesters.
Usage
add_filter('comment_email', 'your_custom_function', 10, 2);
function your_custom_function($comment_author_email, $comment) {
// your custom code here
return $comment_author_email;
}
Parameters
$comment_author_email(string) – The comment author’s email address.$comment(WP_Comment) – The comment object.
More information
See WordPress Developer Resources: comment_email
Examples
Obfuscate Email Addresses
Replace the email address with a placeholder to prevent email harvesting.
add_filter('comment_email', 'obfuscate_email_addresses', 10, 2);
function obfuscate_email_addresses($comment_author_email, $comment) {
return '[email protected]';
}
Append Domain Name
Append your domain name to the comment author’s email address.
add_filter('comment_email', 'append_domain_name', 10, 2);
function append_domain_name($comment_author_email, $comment) {
return $comment_author_email . '@yourdomain.com';
}
Remove Email TLD
Remove the top-level domain (TLD) from the comment author’s email address.
add_filter('comment_email', 'remove_email_tld', 10, 2);
function remove_email_tld($comment_author_email, $comment) {
$parts = explode('@', $comment_author_email);
return $parts[0] . '@';
}
Replace Specific Domain
Replace a specific domain in the comment author’s email address with another domain.
add_filter('comment_email', 'replace_specific_domain', 10, 2);
function replace_specific_domain($comment_author_email, $comment) {
return str_replace('old-domain.com', 'new-domain.com', $comment_author_email);
}
Uppercase Email Addresses
Convert the comment author’s email address to uppercase.
add_filter('comment_email', 'uppercase_email_addresses', 10, 2);
function uppercase_email_addresses($comment_author_email, $comment) {
return strtoupper($comment_author_email);
}