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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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1903 |
|
1904 | /** |
1905 | * Filters the comment moderation email subject. |
1906 | * |
1907 | * @since 1.5.2 |
1908 | * |
1909 | * @param string $subject Subject of the comment moderation email. |
1910 | * @param int $comment_id Comment ID. |
1911 | */ |
1912 | $subject = apply_filters( 'comment_moderation_subject', $subject, $comment_id ); |
1913 |
|
1914 | /** |
1915 | * Filters the comment moderation email headers. |
1916 | * |
1917 | * @since 2.8.0 |
1918 | * |
1919 | * @param string $message_headers Headers for the comment moderation email. |
1920 | * @param int $comment_id Comment ID. |
1921 | */ |