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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 |
|---|---|
| 25 | if ( file_exists( $include ) ) |
| 26 | require( $include ); |
| 27 | else |
| 28 | require( ABSPATH . 'wp-content/themes/default/comments.php'); |
| 29 | |
| 30 | endif; |
| 31 | } |
| 32 | |
| 33 | function wp_new_comment( $commentdata ) { |
| 34 | $commentdata = apply_filters('preprocess_comment', $commentdata); |
| 35 | |
| 36 | $commentdata['comment_post_ID'] = (int) $commentdata['comment_post_ID']; |
| 37 | $commentdata['user_ID'] = (int) $commentdata['user_ID']; |
| 38 | |
| 39 | $commentdata['comment_author_IP'] = $_SERVER['REMOTE_ADDR']; |
| 40 | $commentdata['comment_agent'] = $_SERVER['HTTP_USER_AGENT']; |
| 41 | |
| 42 | $commentdata['comment_date'] = current_time('mysql'); |
| 43 | $commentdata['comment_date_gmt'] = current_time('mysql', 1); |