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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 |
|---|---|
| 366 | /** |
| 367 | * Filter the link types that contain oEmbed provider URLs. |
| 368 | * |
| 369 | * @since 2.9.0 |
| 370 | * |
| 371 | * @param array $format Array of oEmbed link types. Accepts 'application/json+oembed', |
| 372 | * 'text/xml+oembed', and 'application/xml+oembed' (incorrect, |
| 373 | * used by at least Vimeo). |
| 374 | */ |
| 375 | $linktypes = apply_filters( 'oembed_linktypes', array( |
| 376 | 'application/json+oembed' => 'json', |
| 377 | 'text/xml+oembed' => 'xml', |
| 378 | 'application/xml+oembed' => 'xml', |
| 379 | ) ); |
| 380 | |
| 381 | // Strip <body> |
| 382 | if ( $html_head_end = stripos( $html, '</head>' ) ) { |
| 383 | $html = substr( $html, 0, $html_head_end ); |
| 384 | } |