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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 |
---|---|
1691 | } |
1692 |
|
1693 | /** |
1694 | * Filter the comment author's browser user agent before it is set. |
1695 | * |
1696 | * @since 1.5.0 |
1697 | * |
1698 | * @param int $comment_agent The comment author's browser user agent. |
1699 | */ |
1700 | $commentdata['comment_agent'] = apply_filters( 'pre_comment_user_agent', ( isset( $commentdata['comment_agent'] ) ? $commentdata['comment_agent'] : '' ) ); |
1701 | /** This filter is documented in wp-includes/comment.php */ |
1702 | $commentdata['comment_author'] = apply_filters( 'pre_comment_author_name', $commentdata['comment_author'] ); |
1703 | /** |
1704 | * Filter the comment content before it is set. |
1705 | * |
1706 | * @since 1.5.0 |
1707 | * |
1708 | * @param int $comment_content The comment content. |
1709 | */ |