PHP 8.1 depreaction warning

[matjazpotocnik]

PHP Deprecated: explode(): Passing null to parameter #2 ($string) of type string is deprecated in ...\wwwroot\site\modules\FieldtypeMeasurement\Measurement.php:487

[MetaTunes]

Only tested on PHP8.0 so far. I'll look to fix this in the next version.

[matjazpotocnik]

PHP Deprecated: str_starts_with(): Passing null to parameter #1 ($haystack) of type string is deprecated in [...\modules\FieldtypeMeasurement\InputfieldMeasurement.module:108