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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 |
|---|---|
| 398 | |
| 399 | $upload_iframe_src = add_query_arg( 'post_id', (int) $post_id, admin_url('media-upload.php') ); |
| 400 | |
| 401 | if ( $type && 'media' != $type ) |
| 402 | $upload_iframe_src = add_query_arg('type', $type, $upload_iframe_src); |
| 403 | |
| 404 | if ( ! empty( $tab ) ) |
| 405 | $upload_iframe_src = add_query_arg('tab', $tab, $upload_iframe_src); |
| 406 | |
| 407 | $upload_iframe_src = apply_filters($type . '_upload_iframe_src', $upload_iframe_src); |
| 408 | |
| 409 | return add_query_arg('TB_iframe', true, $upload_iframe_src); |
| 410 | } |
| 411 | |
| 412 | /** |
| 413 | * {@internal Missing Short Description}} |
| 414 | * |
| 415 | * @since 2.5.0 |
| 416 | * |