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Source View: extra_{$context}_headers

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Line Code
4470       * Filter extra file headers by context.
4471       *
4472       * The dynamic portion of the hook name, `$context`, refers to
4473       * the context where extra headers might be loaded.
4474       *
4475       * @since 2.9.0
4476       *
4477       * @param array $extra_context_headers Empty array by default.
4478       */
4479      if ( $context && $extra_headers = apply_filters( "extra_{$context}_headers", array() ) ) {
4480           $extra_headers = array_combine( $extra_headers, $extra_headers ); // keys equal values
4481           $all_headers = array_merge( $extra_headers, (array) $default_headers );
4482      } else {
4483           $all_headers = $default_headers;
4484      }
4485
4486      foreach ( $all_headers as $field => $regex ) {
4487           if ( preg_match( '/^[ \t\/*#@]*' . preg_quote( $regex, '/' ) . ':(.*)$/mi', $file_data, $match ) && $match[1] )
4488                $all_headers[ $field ] = _cleanup_header_comment( $match[1] );