[ 'locale' => 'en_US', 'strength' => 'Collator::PRIMARY',]
[ 'result' => [ 'collator' => 'Collator instance', 'bool' => true, 'int' => 0, 'name' => 'Collator::FRENCH_COLLATION,Collator::PRIMARY,Collator::SORT_REGULAR', ], 'php_version' => '7.1.33 Linux x86_64',]