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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 |
|---|---|
| 559 | * Filters the comment author's name cookie before it is set. |
| 560 | * |
| 561 | * When this filter hook is evaluated in wp_filter_comment(), |
| 562 | * the comment author's name string is passed. |
| 563 | * |
| 564 | * @since 1.5.0 |
| 565 | * |
| 566 | * @param string $author_cookie The comment author name cookie. |
| 567 | */ |
| 568 | $comment_author = apply_filters( 'pre_comment_author_name', $_COOKIE['comment_author_' . COOKIEHASH] ); |
| 569 | $comment_author = wp_unslash($comment_author); |
| 570 | $comment_author = esc_attr($comment_author); |
| 571 | $_COOKIE['comment_author_' . COOKIEHASH] = $comment_author; |
| 572 | } |
| 573 | |
| 574 | if ( isset( $_COOKIE['comment_author_email_' . COOKIEHASH] ) ) { |
| 575 | /** |
| 576 | * Filters the comment author's email cookie before it is set. |
| 577 | * |
| Line | Code |
| 1832 | /** |
| 1833 | * Filters the comment author's browser user agent before it is set. |
| 1834 | * |
| 1835 | * @since 1.5.0 |
| 1836 | * |
| 1837 | * @param string $comment_agent The comment author's browser user agent. |
| 1838 | */ |
| 1839 | $commentdata['comment_agent'] = apply_filters( 'pre_comment_user_agent', ( isset( $commentdata['comment_agent'] ) ? $commentdata['comment_agent'] : '' ) ); |
| 1840 | /** This filter is documented in wp-includes/comment.php */ |
| 1841 | $commentdata['comment_author'] = apply_filters( 'pre_comment_author_name', $commentdata['comment_author'] ); |
| 1842 | /** |
| 1843 | * Filters the comment content before it is set. |
| 1844 | * |
| 1845 | * @since 1.5.0 |
| 1846 | * |
| 1847 | * @param string $comment_content The comment content. |
| 1848 | */ |
| 1849 | $commentdata['comment_content'] = apply_filters( 'pre_comment_content', $commentdata['comment_content'] ); |
| 1850 | /** |