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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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1870 |
|
1871 | /** |
1872 | * Filters the comment moderation email subject. |
1873 | * |
1874 | * @since 1.5.2 |
1875 | * |
1876 | * @param string $subject Subject of the comment moderation email. |
1877 | * @param int $comment_id Comment ID. |
1878 | */ |
1879 | $subject = apply_filters( 'comment_moderation_subject', $subject, $comment_id ); |
1880 |
|
1881 | /** |
1882 | * Filters the comment moderation email headers. |
1883 | * |
1884 | * @since 2.8.0 |
1885 | * |
1886 | * @param string $message_headers Headers for the comment moderation email. |
1887 | * @param int $comment_id Comment ID. |
1888 | */ |