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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.
This hook occurs 2 times in this file.
| Line | Code |
|---|---|
| 51 | } |
| 52 | $s = trim( $s ); |
| 53 | if ( strlen( $s ) < 2 ) |
| 54 | die; // require 2 chars for matching |
| 55 | $results = $wpdb->get_col( "SELECT t.name FROM $wpdb->term_taxonomy AS tt INNER JOIN $wpdb->terms AS t ON tt.term_id = t.term_id WHERE tt.taxonomy = 'post_tag' AND t.name LIKE ('%". $s . "%')" ); |
| 56 | echo join( $results, "\n" ); |
| 57 | die; |
| 58 | break; |
| 59 | default : |
| 60 | do_action( 'wp_ajax_' . $_GET['action'] ); |
| 61 | die('0'); |
| 62 | break; |
| 63 | endswitch; |
| 64 | endif; |
| 65 | |
| 66 | $id = isset($_POST['id'])? (int) $_POST['id'] : 0; |
| 67 | switch ( $action = $_POST['action'] ) : |
| 68 | case 'delete-comment' : |
| 69 | check_ajax_referer( "delete-comment_$id" ); |
| Line | Code |
| 1031 | $x = new WP_Ajax_Response(); |
| 1032 | $x->add( array( |
| 1033 | 'what' => $what, |
| 1034 | 'data' => $html |
| 1035 | )); |
| 1036 | $x->send(); |
| 1037 | |
| 1038 | break; |
| 1039 | default : |
| 1040 | do_action( 'wp_ajax_' . $_POST['action'] ); |
| 1041 | die('0'); |
| 1042 | break; |
| 1043 | endswitch; |
| 1044 | ?> |
| 1045 | |