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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 |
---|---|
445 | /** |
446 | * Filters the link types that contain oEmbed provider URLs. |
447 | * |
448 | * @since 2.9.0 |
449 | * |
450 | * @param array $format Array of oEmbed link types. Accepts 'application/json+oembed', |
451 | * 'text/xml+oembed', and 'application/xml+oembed' (incorrect, |
452 | * used by at least Vimeo). |
453 | */ |
454 | $linktypes = apply_filters( 'oembed_linktypes', array( |
455 | 'application/json+oembed' => 'json', |
456 | 'text/xml+oembed' => 'xml', |
457 | 'application/xml+oembed' => 'xml', |
458 | ) ); |
459 |
|
460 | // Strip <body> |
461 | if ( $html_head_end = stripos( $html, '</head>' ) ) { |
462 | $html = substr( $html, 0, $html_head_end ); |
463 | } |