ctype_lower

Supported Versions: PHP 4 >= 4.0.4, PHP 5, PHP 7, PHP 8
Check for lowercase character(s)
<?php ctype_lower(mixed $text): bool
<?php     public function toBeLowercase(string $message = ''): self

    {

        Assert::assertTrue(ctype_lower((string) $this->value), $message);



        return $this;

    }