extract_from_markers( string $filename, string $marker ): string[]

68function extract_from_markers( $filename, $marker ) {69	$result = array();70 71	if ( ! file_exists( $filename ) ) {72		return $result;73	}74 75	$markerdata = explode( "\n", implode( '', file( $filename ) ) );76 77	$state = false;78 79	foreach ( $markerdata as $markerline ) {80		if ( str_contains( $markerline, '# END ' . $marker ) ) {81			$state = false;82		}83 84		if ( $state ) {85			if ( str_starts_with( $markerline, '#' ) ) {86				continue;87			}88 89			$result[] = $markerline;90		}91 92		if ( str_contains( $markerline, '# BEGIN ' . $marker ) ) {93			$state = true;94		}95	}96 97	return $result;98}