function Assert::alnum

@psalm-pure

Parameters

string $value:

string $message:

Throws

InvalidArgumentException

File

vendor/webmozart/assert/src/Assert.php, line 1266

Class

Assert

Efficient assertions to validate the input/output of your methods.

Namespace

Webmozart\Assert

Code

public static function alnum($value, $message = '') {
    $locale = \setlocale(LC_CTYPE, 0);
    \setlocale(LC_CTYPE, 'C');
    $valid = !\ctype_alnum($value);
    \setlocale(LC_CTYPE, $locale);
    if ($valid) {
        static::reportInvalidArgument(\sprintf($message ?: 'Expected a value to contain letters and digits only. Got: %s', static::valueToString($value)));
    }
}