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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 |
---|---|
1802 | } |
1803 |
|
1804 | /** |
1805 | * Filters the comment author's browser user agent before it is set. |
1806 | * |
1807 | * @since 1.5.0 |
1808 | * |
1809 | * @param string $comment_agent The comment author's browser user agent. |
1810 | */ |
1811 | $commentdata['comment_agent'] = apply_filters( 'pre_comment_user_agent', ( isset( $commentdata['comment_agent'] ) ? $commentdata['comment_agent'] : '' ) ); |
1812 | /** This filter is documented in wp-includes/comment.php */ |
1813 | $commentdata['comment_author'] = apply_filters( 'pre_comment_author_name', $commentdata['comment_author'] ); |
1814 | /** |
1815 | * Filters the comment content before it is set. |
1816 | * |
1817 | * @since 1.5.0 |
1818 | * |
1819 | * @param string $comment_content The comment content. |
1820 | */ |