wpsc_get_accept_header() │ WPSCache 1.0

Returns a string containing a sanitized version of the Accept header. For now, this can only respond with text/html or application/json - used to differentiate between pages which may or may not be cacheable.

Хуков нет.

Возвращает

null. Ничего (null).

Использование

wpsc_get_accept_header();

Код wpsc_get_accept_header() WPSCache 1.10.0

wp-super-cache/wp-cache-phase2.php 
function wpsc_get_accept_header() {
	static $accept = 'N/A';

	if ( $accept === 'N/A' ) {
		$json_list = array( 'application/json', 'application/activity+json', 'application/ld+json' );
		// phpcs:ignore WordPress.NamingConventions.ValidVariableName.VariableNotSnakeCase
		// phpcs:ignore WordPress.Security.ValidatedSanitizedInput.MissingUnslash -- $accept is checked and set below.
		$accept = isset( $_SERVER['HTTP_ACCEPT'] ) ? strtolower( filter_var( $_SERVER['HTTP_ACCEPT'] ) ) : '';

		foreach ( $json_list as $header ) {
			if ( strpos( $accept, $header ) ) {
				$accept = 'application/json';
			}
		}

		if ( $accept !== 'application/json' ) {
			$accept = 'text/html';
		}

		wp_cache_debug( 'ACCEPT: ' . $accept );
	}

	return $accept;
}