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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 |
|---|---|
| 511 | $approved = apply_filters('pre_comment_approved', $approved); |
| 512 | |
| 513 | $result = $wpdb->query("INSERT INTO $wpdb->comments |
| 514 | (comment_post_ID, comment_author, comment_author_email, comment_author_url, comment_author_IP, comment_date, comment_date_gmt, comment_content, comment_approved, comment_agent, comment_type, user_id) |
| 515 | VALUES |
| 516 | ('$comment_post_ID', '$author', '$email', '$url', '$user_ip', '$now', '$now_gmt', '$comment', '$approved', '$user_agent', '$comment_type', '$user_id') |
| 517 | "); |
| 518 | |
| 519 | $comment_id = $wpdb->insert_id; |
| 520 | do_action('comment_post', $comment_id, $approved); |
| 521 | |
| 522 | if ( 'spam' !== $approved ) { // If it's spam save it silently for later crunching |
| 523 | if ( '0' == $approved ) |
| 524 | wp_notify_moderator($comment_id); |
| 525 | |
| 526 | if ( get_settings('comments_notify') && $approved ) |
| 527 | wp_notify_postauthor($comment_id, $comment_type); |
| 528 | } |
| 529 | |