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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.
This hook occurs 2 times in this file.
| Line | Code |
|---|---|
| 300 | * Filter oEmbed remote get arguments. |
| 301 | * |
| 302 | * @since 4.0.0 |
| 303 | * |
| 304 | * @see WP_Http::request() |
| 305 | * |
| 306 | * @param array $args oEmbed remote get arguments. |
| 307 | * @param string $url URL to be inspected. |
| 308 | */ |
| 309 | $args = apply_filters( 'oembed_remote_get_args', array(), $url ); |
| 310 | |
| 311 | // Fetch URL content |
| 312 | $request = wp_safe_remote_get( $url, $args ); |
| 313 | if ( $html = wp_remote_retrieve_body( $request ) ) { |
| 314 | |
| 315 | /** |
| 316 | * Filter the link types that contain oEmbed provider URLs. |
| 317 | * |
| 318 | * @since 2.9.0 |
| Line | Code |
| 405 | * @access private |
| 406 | * @param string $provider_url_with_args URL to the provider with full arguments list (url, maxheight, etc.) |
| 407 | * @param string $format Format to use |
| 408 | * @return bool|object False on failure, otherwise the result in the form of an object. |
| 409 | */ |
| 410 | private function _fetch_with_format( $provider_url_with_args, $format ) { |
| 411 | $provider_url_with_args = add_query_arg( 'format', $format, $provider_url_with_args ); |
| 412 | |
| 413 | /** This filter is documented in wp-includes/class-oembed.php */ |
| 414 | $args = apply_filters( 'oembed_remote_get_args', array(), $provider_url_with_args ); |
| 415 | |
| 416 | $response = wp_safe_remote_get( $provider_url_with_args, $args ); |
| 417 | if ( 501 == wp_remote_retrieve_response_code( $response ) ) |
| 418 | return new WP_Error( 'not-implemented' ); |
| 419 | if ( ! $body = wp_remote_retrieve_body( $response ) ) |
| 420 | return false; |
| 421 | $parse_method = "_parse_$format"; |
| 422 | return $this->$parse_method( $body ); |
| 423 | } |