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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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2111 | } |
2112 |
|
2113 | /** |
2114 | * Filters the comment author's browser user agent before it is set. |
2115 | * |
2116 | * @since 1.5.0 |
2117 | * |
2118 | * @param string $comment_agent The comment author's browser user agent. |
2119 | */ |
2120 | $commentdata['comment_agent'] = apply_filters( 'pre_comment_user_agent', ( isset( $commentdata['comment_agent'] ) ? $commentdata['comment_agent'] : '' ) ); |
2121 | /** This filter is documented in wp-includes/comment.php */ |
2122 | $commentdata['comment_author'] = apply_filters( 'pre_comment_author_name', $commentdata['comment_author'] ); |
2123 | /** |
2124 | * Filters the comment content before it is set. |
2125 | * |
2126 | * @since 1.5.0 |
2127 | * |
2128 | * @param string $comment_content The comment content. |
2129 | */ |