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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 |
|---|---|
| 1257 | */ |
| 1258 | function wp_filter_comment($commentdata) { |
| 1259 | if ( isset($commentdata['user_ID']) ) |
| 1260 | $commentdata['user_id'] = apply_filters('pre_user_id', $commentdata['user_ID']); |
| 1261 | elseif ( isset($commentdata['user_id']) ) |
| 1262 | $commentdata['user_id'] = apply_filters('pre_user_id', $commentdata['user_id']); |
| 1263 | $commentdata['comment_agent'] = apply_filters('pre_comment_user_agent', ( isset( $commentdata['comment_agent'] ) ? $commentdata['comment_agent'] : '' ) ); |
| 1264 | $commentdata['comment_author'] = apply_filters('pre_comment_author_name', $commentdata['comment_author']); |
| 1265 | $commentdata['comment_content'] = apply_filters('pre_comment_content', $commentdata['comment_content']); |
| 1266 | $commentdata['comment_author_IP'] = apply_filters('pre_comment_user_ip', $commentdata['comment_author_IP']); |
| 1267 | $commentdata['comment_author_url'] = apply_filters('pre_comment_author_url', $commentdata['comment_author_url']); |
| 1268 | $commentdata['comment_author_email'] = apply_filters('pre_comment_author_email', $commentdata['comment_author_email']); |
| 1269 | $commentdata['filtered'] = true; |
| 1270 | return $commentdata; |
| 1271 | } |
| 1272 | |
| 1273 | /** |
| 1274 | * Whether comment should be blocked because of comment flood. |
| 1275 | * |