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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 |
---|---|
690 | * Filters the upload iframe source URL for a specific media type. |
691 | * |
692 | * The dynamic portion of the hook name, `$type`, refers to the type |
693 | * of media uploaded. |
694 | * |
695 | * @since 3.0.0 |
696 | * |
697 | * @param string $upload_iframe_src The upload iframe source URL by type. |
698 | */ |
699 | $upload_iframe_src = apply_filters( "{$type}_upload_iframe_src", $upload_iframe_src ); |
700 |
|
701 | return add_query_arg( 'TB_iframe', true, $upload_iframe_src ); |
702 | } |
703 |
|
704 | /** |
705 | * Handles form submissions for the legacy media uploader. |
706 | * |
707 | * @since 2.5.0 |
708 | * |