Validators

IsFloat

Laminas\I18n\Validator\IsFloat allows you to validate if a given value contains a floating-point value. This validator takes into account localized input.

Float values are often written differently based on the country or region. For example, using English, you might write 1.5, whereas in german you would write 1,5, and in other languages you might use grouping.

Laminas\I18n\Validator\IsFloat is able to validate such notations. However, it is limited to the locale you set.

Internally, PHP's NumberFormatter (ext/intl) tries to create a formatted number for the given value and locale.

Basic Usage

$validator = new Laminas\I18n\Validator\IsFloat();

$validator->isValid(1234.5);    // true
$validator->isValid('10a01');   // false
$validator->isValid('1,234.5'); // true

By default, if no locale is provided, IsFloat will use the system locale provided by PHP's Locale class and the getDefault() method.

(The above example assumes that the environment locale is set to en.)

Using a notation not specific to the locale results in a false evaluation.

Using Locale

$validator = new Laminas\I18n\Validator\IsFloat(['locale' => 'en_US']);

$validator->isValid(1234.5); // true

$validator = new Laminas\I18n\Validator\IsFloat();
$validator->setLocale('en_US');

$validator->isValid(1234.5); // true

Locale::setDefault('en_US');

$validator = new Laminas\I18n\Validator\IsFloat();

$validator->isValid(1234.5); // true

Get Current Value

To get the current value of this option, use the getLocale() method.

$validator = new Laminas\I18n\Validator\IsFloat(['locale' => 'en_US']);

echo $validator->getLocale(); // 'en_US'

Default Value

By default, if no locale is provided, IsFloat will use the system locale provided by PHP's Locale::getDefault().