isAlphanumeric

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Determine if the string is composed of alphanumeric characters.

Twine\Str::isAlphanumeric() : bool

Examples

$string = new Twine\Str('JohnPinkerton123');

        $string->isAlphanumeric(); // Returns true

$string = new Twine\Str('john pinkerton');

        $string->isAlphanumeric(); // Returns false