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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); |