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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 |
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466 |
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467 | $upload_iframe_src = add_query_arg( 'post_id', (int) $post_id, admin_url('media-upload.php') ); |
468 |
|
469 | if ( $type && 'media' != $type ) |
470 | $upload_iframe_src = add_query_arg('type', $type, $upload_iframe_src); |
471 |
|
472 | if ( ! empty( $tab ) ) |
473 | $upload_iframe_src = add_query_arg('tab', $tab, $upload_iframe_src); |
474 |
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475 | $upload_iframe_src = apply_filters($type . '_upload_iframe_src', $upload_iframe_src); |
476 |
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477 | return add_query_arg('TB_iframe', true, $upload_iframe_src); |
478 | } |
479 |
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480 | /** |
481 | * {@internal Missing Short Description}} |
482 | * |
483 | * @since 2.5.0 |
484 | * |