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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.
This hook occurs 2 times in this file.
| Line | Code |
|---|---|
| 1042 | * Filter the comment author's name cookie before it is set. |
| 1043 | * |
| 1044 | * When this filter hook is evaluated in wp_filter_comment(), |
| 1045 | * the comment author's name string is passed. |
| 1046 | * |
| 1047 | * @since 1.5.0 |
| 1048 | * |
| 1049 | * @param string $author_cookie The comment author name cookie. |
| 1050 | */ |
| 1051 | $comment_author = apply_filters( 'pre_comment_author_name', $_COOKIE['comment_author_' . COOKIEHASH] ); |
| 1052 | $comment_author = wp_unslash($comment_author); |
| 1053 | $comment_author = esc_attr($comment_author); |
| 1054 | $_COOKIE['comment_author_' . COOKIEHASH] = $comment_author; |
| 1055 | } |
| 1056 | |
| 1057 | if ( isset( $_COOKIE['comment_author_email_' . COOKIEHASH] ) ) { |
| 1058 | /** |
| 1059 | * Filter the comment author's email cookie before it is set. |
| 1060 | * |
| Line | Code |
| 1978 | /** |
| 1979 | * Filter the comment author's browser user agent before it is set. |
| 1980 | * |
| 1981 | * @since 1.5.0 |
| 1982 | * |
| 1983 | * @param int $comment_agent The comment author's browser user agent. |
| 1984 | */ |
| 1985 | $commentdata['comment_agent'] = apply_filters( 'pre_comment_user_agent', ( isset( $commentdata['comment_agent'] ) ? $commentdata['comment_agent'] : '' ) ); |
| 1986 | /** This filter is documented in wp-includes/comment.php */ |
| 1987 | $commentdata['comment_author'] = apply_filters( 'pre_comment_author_name', $commentdata['comment_author'] ); |
| 1988 | /** |
| 1989 | * Filter the comment content before it is set. |
| 1990 | * |
| 1991 | * @since 1.5.0 |
| 1992 | * |
| 1993 | * @param int $comment_content The comment content. |
| 1994 | */ |
| 1995 | $commentdata['comment_content'] = apply_filters( 'pre_comment_content', $commentdata['comment_content'] ); |
| 1996 | /** |