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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 |
|---|---|
| 98 | } |
| 99 | return $id; |
| 100 | } |
| 101 | |
| 102 | function wp_filter_comment($commentdata) { |
| 103 | $commentdata['user_id'] = apply_filters('pre_user_id', $commentdata['user_ID']); |
| 104 | $commentdata['comment_agent'] = apply_filters('pre_comment_user_agent', $commentdata['comment_agent']); |
| 105 | $commentdata['comment_author'] = apply_filters('pre_comment_author_name', $commentdata['comment_author']); |
| 106 | $commentdata['comment_content'] = apply_filters('pre_comment_content', $commentdata['comment_content']); |
| 107 | $commentdata['comment_author_IP'] = apply_filters('pre_comment_user_ip', $commentdata['comment_author_IP']); |
| 108 | $commentdata['comment_author_url'] = apply_filters('pre_comment_author_url', $commentdata['comment_author_url']); |
| 109 | $commentdata['comment_author_email'] = apply_filters('pre_comment_author_email', $commentdata['comment_author_email']); |
| 110 | $commentdata['filtered'] = true; |
| 111 | return $commentdata; |
| 112 | } |
| 113 | |
| 114 | function wp_allow_comment($commentdata) { |
| 115 | global $wpdb; |
| 116 | extract($commentdata); |