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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 |
|---|---|
| 370 | $r .= "' );\" class='deletemeta' tabindex='6' value='".attribute_escape(__( 'Delete' ))."' /></td>"; |
| 371 | $r .= "\n\t</tr>"; |
| 372 | } |
| 373 | echo $r; |
| 374 | echo "\n\t</tbody>"; |
| 375 | } |
| 376 | |
| 377 | function meta_form() { |
| 378 | global $wpdb; |
| 379 | $limit = (int) apply_filters( 'postmeta_form_limit', 30 ); |
| 380 | $keys = $wpdb->get_col( " |
| 381 | SELECT meta_key |
| 382 | FROM $wpdb->postmeta |
| 383 | WHERE meta_key NOT LIKE '\_%' |
| 384 | GROUP BY meta_key |
| 385 | ORDER BY meta_id DESC |
| 386 | LIMIT $limit" ); |
| 387 | if ( $keys ) |
| 388 | natcasesort($keys); |