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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 |
|---|---|
| 389 | function get_upload_iframe_src( $type = null ) { |
| 390 | global $post_ID; |
| 391 | |
| 392 | $uploading_iframe_ID = (int) $post_ID; |
| 393 | $upload_iframe_src = add_query_arg( 'post_id', $uploading_iframe_ID, admin_url('media-upload.php') ); |
| 394 | |
| 395 | if ( $type && 'media' != $type ) |
| 396 | $upload_iframe_src = add_query_arg('type', $type, $upload_iframe_src); |
| 397 | |
| 398 | $upload_iframe_src = apply_filters($type . '_upload_iframe_src', $upload_iframe_src); |
| 399 | |
| 400 | return add_query_arg('TB_iframe', true, $upload_iframe_src); |
| 401 | } |
| 402 | |
| 403 | /** |
| 404 | * {@internal Missing Short Description}} |
| 405 | * |
| 406 | * @since 2.5.0 |
| 407 | * |