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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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1796 | } |
1797 |
|
1798 | /** |
1799 | * Filters the comment author's browser user agent before it is set. |
1800 | * |
1801 | * @since 1.5.0 |
1802 | * |
1803 | * @param string $comment_agent The comment author's browser user agent. |
1804 | */ |
1805 | $commentdata['comment_agent'] = apply_filters( 'pre_comment_user_agent', ( isset( $commentdata['comment_agent'] ) ? $commentdata['comment_agent'] : '' ) ); |
1806 | /** This filter is documented in wp-includes/comment.php */ |
1807 | $commentdata['comment_author'] = apply_filters( 'pre_comment_author_name', $commentdata['comment_author'] ); |
1808 | /** |
1809 | * Filters the comment content before it is set. |
1810 | * |
1811 | * @since 1.5.0 |
1812 | * |
1813 | * @param string $comment_content The comment content. |
1814 | */ |