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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 |
|---|---|
| 385 | * returning the passed value instead. |
| 386 | * |
| 387 | * @since 4.5.3 |
| 388 | * |
| 389 | * @param null|string $result The UNSANITIZED (and potentially unsafe) HTML that should be used to embed. |
| 390 | * Default null to continue retrieving the result. |
| 391 | * @param string $url The URL to the content that should be attempted to be embedded. |
| 392 | * @param array $args Optional. Arguments, usually passed from a shortcode. Default empty. |
| 393 | */ |
| 394 | $pre = apply_filters( 'pre_oembed_result', null, $url, $args ); |
| 395 | |
| 396 | if ( null !== $pre ) { |
| 397 | return $pre; |
| 398 | } |
| 399 | |
| 400 | $data = $this->get_data( $url, $args ); |
| 401 | |
| 402 | if ( false === $data ) { |
| 403 | return false; |