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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 |
|---|---|
| 205 | // Everyone else's comments will be checked. |
| 206 | if ( check_comment($comment_author, $comment_author_email, $comment_author_url, $comment_content, $comment_author_IP, $comment_agent, $comment_type) ) |
| 207 | $approved = 1; |
| 208 | else |
| 209 | $approved = 0; |
| 210 | if ( wp_blacklist_check($comment_author, $comment_author_email, $comment_author_url, $comment_content, $comment_author_IP, $comment_agent) ) |
| 211 | $approved = 'spam'; |
| 212 | } |
| 213 | |
| 214 | $approved = apply_filters('pre_comment_approved', $approved); |
| 215 | return $approved; |
| 216 | } |
| 217 | |
| 218 | function check_comment_flood_db( $ip, $email, $date ) { |
| 219 | global $wpdb; |
| 220 | if ( $lasttime = $wpdb->get_var("SELECT comment_date_gmt FROM $wpdb->comments WHERE comment_author_IP = '$ip' OR comment_author_email = '$email' ORDER BY comment_date DESC LIMIT 1") ) { |
| 221 | $time_lastcomment = mysql2date('U', $lasttime); |
| 222 | $time_newcomment = mysql2date('U', $date); |
| 223 | $flood_die = apply_filters('comment_flood_filter', false, $time_lastcomment, $time_newcomment); |