Zend\I18n\Validator\IsFloat allows you to validate if a given value contains a floating-point value. This validator
validates also localized input.
Supported options for Zend\I18n\Validator\IsFloat¶
The following options are supported for
- locale: Sets the locale which will be used to validate localized float values.
Simple float validation¶
The simplest way to validate a float is by using the system settings. When no option is used, the environment locale is used for validation:
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$validator = new Zend\I18n\Validator\IsFloat(); $validator->isValid(1234.5); // returns true $validator->isValid('10a01'); // returns false $validator->isValid('1,234.5'); // returns true
In the above example we expected that our environment is set to “en” as locale.
Localized float validation¶
Often it’s useful to be able to validate also localized values. Float values are often written different in other countries. For example using english you will write “1.5”. In german you may write “1,5” and in other languages you may use grouping.
Zend\I18n\Validator\IsFloat is able to validate such notations. However,it is limited to the locale you set. See the
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$validator = new Zend\I18n\Validator\IsFloat(array('locale' => 'de')); $validator->isValid(1234.5); // returns true $validator->isValid("1 234,5"); // returns false $validator->isValid("1.234"); // returns true
As you can see, by using a locale, your input is validated localized. Using a different notation you get a
FALSE when the locale forces a different notation.
The locale can also be set afterwards by using
setLocale() and retrieved by using
Migration from 2.0-2.3 to 2.4+¶
Version 2.4 adds support for PHP 7. In PHP 7,
float is a reserved keyword,
which required renaming the
Float validator. If you were using the
directly previously, you will now receive an
E_USER_DEPRECATED notice on
instantiation. Please update your code to refer to the
IsFloat class instead.
Users pulling their
Float validator instance from the validator plugin manager
IsFloat instance instead starting in 2.4.0.