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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 |
|---|---|
| 2157 | |
| 2158 | /** |
| 2159 | * Filters the comment moderation email subject. |
| 2160 | * |
| 2161 | * @since 1.5.2 |
| 2162 | * |
| 2163 | * @param string $subject Subject of the comment moderation email. |
| 2164 | * @param int $comment_id Comment ID. |
| 2165 | */ |
| 2166 | $subject = apply_filters( 'comment_moderation_subject', $subject, $comment_id ); |
| 2167 | |
| 2168 | wp_mail( $email, wp_specialchars_decode( $subject ), $notify_message, $message_headers ); |
| 2169 | |
| 2170 | if ( $switched_locale ) { |
| 2171 | restore_previous_locale(); |
| 2172 | } |
| 2173 | } |
| 2174 | |
| 2175 | return true; |