function TraceContextValidator::isValidTraceFlag

Return value

bool Returns a value that indicates whether trace flag is valid TraceFlags must be exactly 1 bytes (1 char) representing a bit field

1 call to TraceContextValidator::isValidTraceFlag()

TraceContextPropagator::extractImpl in vendor/open-telemetry/api/Trace/Propagation/TraceContextPropagator.php

File

vendor/open-telemetry/api/Trace/Propagation/TraceContextValidator.php, line 23

Class

TraceContextValidator

Namespace

OpenTelemetry\API\Trace\Propagation

Code

public static function isValidTraceFlag(string $traceFlag) : bool {
    return ctype_xdigit($traceFlag) && strlen($traceFlag) === self::TRACE_FLAG_LENGTH;
}