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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 |
|---|---|
| 601 | * Filter the upload iframe source URL for a specific media type. |
| 602 | * |
| 603 | * The dynamic portion of the hook name, `$type`, refers to the type |
| 604 | * of media uploaded. |
| 605 | * |
| 606 | * @since 3.0.0 |
| 607 | * |
| 608 | * @param string $upload_iframe_src The upload iframe source URL by type. |
| 609 | */ |
| 610 | $upload_iframe_src = apply_filters( $type . '_upload_iframe_src', $upload_iframe_src ); |
| 611 | |
| 612 | return add_query_arg('TB_iframe', true, $upload_iframe_src); |
| 613 | } |
| 614 | |
| 615 | /** |
| 616 | * {@internal Missing Short Description}} |
| 617 | * |
| 618 | * @since 2.5.0 |
| 619 | * |