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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 |
|---|---|
| 191 | // akismet_spam_count will be incremented later by comment_is_spam() |
| 192 | self::$last_comment_result = 'spam'; |
| 193 | |
| 194 | $discard = ( isset( $commentdata['akismet_pro_tip'] ) && $commentdata['akismet_pro_tip'] === 'discard' && self::allow_discard() ); |
| 195 | |
| 196 | do_action( 'akismet_spam_caught', $discard ); |
| 197 | |
| 198 | if ( $discard ) { |
| 199 | // akismet_result_spam() won't be called so bump the counter here |
| 200 | if ( $incr = apply_filters('akismet_spam_count_incr', 1) ) |
| 201 | update_option( 'akismet_spam_count', get_option('akismet_spam_count') + $incr ); |
| 202 | $redirect_to = isset( $_SERVER['HTTP_REFERER'] ) ? $_SERVER['HTTP_REFERER'] : get_permalink( $post ); |
| 203 | wp_safe_redirect( esc_url_raw( $redirect_to ) ); |
| 204 | die(); |
| 205 | } |
| 206 | } |
| 207 | |
| 208 | // if the response is neither true nor false, hold the comment for moderation and schedule a recheck |
| 209 | if ( 'true' != $response[1] && 'false' != $response[1] ) { |
| Line | Code |
| 877 | } |
| 878 | |
| 879 | // Only do this if it's the correct comment |
| 880 | if ( ! self::matches_last_comment( $comment ) ) { |
| 881 | self::log( "comment_is_spam mismatched comment, returning unaltered $approved" ); |
| 882 | return $approved; |
| 883 | } |
| 884 | |
| 885 | // bump the counter here instead of when the filter is added to reduce the possibility of overcounting |
| 886 | if ( $incr = apply_filters('akismet_spam_count_incr', 1) ) |
| 887 | update_option( 'akismet_spam_count', get_option('akismet_spam_count') + $incr ); |
| 888 | |
| 889 | return self::$last_comment_result; |
| 890 | } |
| 891 | |
| 892 | /** |
| 893 | * If Akismet is temporarily unreachable, we don't want to "spam" the blogger with |
| 894 | * moderation emails for comments that will be automatically cleared or spammed on |
| 895 | * the next retry. |