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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 |
|---|---|
| 546 | do_action('import_post_added', $post_id); |
| 547 | print "</li>\n"; |
| 548 | } |
| 549 | |
| 550 | function process_post_meta($post_id, $key, $value) { |
| 551 | // the filter can return false to skip a particular metadata key |
| 552 | $_key = apply_filters('import_post_meta_key', $key); |
| 553 | if ( $_key ) { |
| 554 | add_post_meta( $post_id, $_key, $value ); |
| 555 | do_action('import_post_meta', $post_id, $_key, $value); |
| 556 | } |
| 557 | } |
| 558 | |
| 559 | function process_attachment($postdata, $remote_url) { |
| 560 | if ($this->fetch_attachments and $remote_url) { |
| 561 | printf( __('Importing attachment <em>%s</em>... '), htmlspecialchars($remote_url) ); |
| 562 | |
| 563 | // If the URL is absolute, but does not contain http, upload it assuming the base_site_url variable |
| 564 | if ( preg_match('/^\/[\w\W]+$/', $remote_url) ) |