Check if entity property exists

you can use getClassMetadata like this:

$columns = $em->getClassMetadata(Car::class)->getColumnNames();

if (in_array($property, $columns)) {
   //property exists, code here
}

You can try also: getFieldNames instead of getColumnNames

Alessandro is right but the exact method hasField() exists:

$metaCar = $em->getClassMetadata(Car::class)

if ($metaCar->hasField('foo')) {
   //property exists
}