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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 |
---|---|
622 | * Filters the upload iframe source URL for a specific media type. |
623 | * |
624 | * The dynamic portion of the hook name, `$type`, refers to the type |
625 | * of media uploaded. |
626 | * |
627 | * @since 3.0.0 |
628 | * |
629 | * @param string $upload_iframe_src The upload iframe source URL by type. |
630 | */ |
631 | $upload_iframe_src = apply_filters( "{$type}_upload_iframe_src", $upload_iframe_src ); |
632 |
|
633 | return add_query_arg('TB_iframe', true, $upload_iframe_src); |
634 | } |
635 |
|
636 | /** |
637 | * Handles form submissions for the legacy media uploader. |
638 | * |
639 | * @since 2.5.0 |
640 | * |