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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 |
|---|---|
| 133 | ping_status = '$ping_status', |
| 134 | comment_status = '$comment_status' |
| 135 | WHERE ID = $ID"; |
| 136 | |
| 137 | $result = $wpdb->query($sql); |
| 138 | $rows_affected = $wpdb->rows_affected; |
| 139 | |
| 140 | wp_set_post_cats('', $ID, $post_category); |
| 141 | |
| 142 | do_action('edit_post', $ID); |
| 143 | |
| 144 | return $rows_affected; |
| 145 | } |
| 146 | |
| 147 | function wp_get_post_cats($blogid = '1', $post_ID = 0) { |
| 148 | global $wpdb; |
| 149 | |
| 150 | $sql = "SELECT category_id |
| 151 | FROM $wpdb->post2cat |