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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 |
|---|---|
| 609 | * Filters the comment author's email cookie before it is set. |
| 610 | * |
| 611 | * When this filter hook is evaluated in wp_filter_comment(), |
| 612 | * the comment author's email string is passed. |
| 613 | * |
| 614 | * @since 1.5.0 |
| 615 | * |
| 616 | * @param string $author_email_cookie The comment author email cookie. |
| 617 | */ |
| 618 | $comment_author_email = apply_filters( 'pre_comment_author_email', $_COOKIE[ 'comment_author_email_' . COOKIEHASH ] ); |
| 619 | $comment_author_email = wp_unslash( $comment_author_email ); |
| 620 | $comment_author_email = esc_attr( $comment_author_email ); |
| 621 | |
| 622 | $_COOKIE[ 'comment_author_email_' . COOKIEHASH ] = $comment_author_email; |
| 623 | } |
| 624 | |
| 625 | if ( isset( $_COOKIE[ 'comment_author_url_' . COOKIEHASH ] ) ) { |
| 626 | /** |
| 627 | * Filters the comment author's URL cookie before it is set. |
| Line | Code |
| 2133 | * |
| 2134 | * @since 1.5.0 |
| 2135 | * |
| 2136 | * @param string $comment_author_ip The comment author's IP address. |
| 2137 | */ |
| 2138 | $commentdata['comment_author_IP'] = apply_filters( 'pre_comment_user_ip', $commentdata['comment_author_IP'] ); |
| 2139 | /** This filter is documented in wp-includes/comment.php */ |
| 2140 | $commentdata['comment_author_url'] = apply_filters( 'pre_comment_author_url', $commentdata['comment_author_url'] ); |
| 2141 | /** This filter is documented in wp-includes/comment.php */ |
| 2142 | $commentdata['comment_author_email'] = apply_filters( 'pre_comment_author_email', $commentdata['comment_author_email'] ); |
| 2143 | |
| 2144 | $commentdata['filtered'] = true; |
| 2145 | |
| 2146 | return $commentdata; |
| 2147 | } |
| 2148 | |
| 2149 | /** |
| 2150 | * Determines whether a comment should be blocked because of comment flood. |
| 2151 | * |