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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )
apply_filters( "hook_name", "what_to_filter" )
.Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
Line | Code |
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1645 |
|
1646 | /** |
1647 | * Filter the comment moderation email headers. |
1648 | * |
1649 | * @since 2.8.0 |
1650 | * |
1651 | * @param string $message_headers Headers for the comment moderation email. |
1652 | * @param int $comment_id Comment ID. |
1653 | */ |
1654 | $message_headers = apply_filters( 'comment_moderation_headers', $message_headers, $comment_id ); |
1655 |
|
1656 | foreach ( $emails as $email ) { |
1657 | @wp_mail( $email, wp_specialchars_decode( $subject ), $notify_message, $message_headers ); |
1658 | } |
1659 |
|
1660 | return true; |
1661 | } |
1662 | endif; |
1663 |
|