Zend\I18n\Validator\IsInt validates if a given value is an integer. Also localized integer values are recognised and can be validated.

Supported Options

The following options are supported for Zend\I18n\Validator\IsInt:

  • locale: Sets the locale which will be used to validate localized integers.

Simple integer validation

The simplest way to validate an integer is by using the system settings. When no option is used, the environment locale is used for validation:

$validator = new Zend\I18n\Validator\IsInt();

$validator->isValid(1234);   // returns true
$validator->isValid(1234.5); // returns false
$validator->isValid('1,234'); // returns true

In the above example we expected that our environment is set to “en” as locale. As you can see in the third example also grouping is recognised.

Localized integer validation

Often it’s useful to be able to validate also localized values. Integer values are often written different in other countries. For example using english you can write “1234” or “1,234”. Both are integer values but the grouping is optional. In german for example you may write “1.234” and in french “1 234”.

Zend\I18n\Validator\IsInt is able to validate such notations. But it is limited to the locale you set. This means that it not simply strips off the separator, it validates if the correct separator is used. See the following code:

$validator = new Zend\I18n\Validator\IsInt(array('locale' => 'de'));

$validator->isValid(1234); // returns true
$validator->isValid("1,234"); // returns false
$validator->isValid("1.234"); // returns true

As you can see, by using a locale, your input is validated localized. Using the english 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 getLocale().

Migration from 2.0-2.3 to 2.4+

Version 2.4 adds support for PHP 7. In PHP 7, int is a reserved keyword, which required renaming the Int validator. If you were using the Int validator directly previously, you will now receive an E_USER_DEPRECATED notice on instantiation. Please update your code to refer to the IsInt class instead.

Users pulling their Int validator instance from the validator plugin manager receive an IsInt instance instead starting in 2.4.0.

Table Of Contents

Previous topic


Next topic

Regex Validator

This Page

Note: You need to stay logged into your GitHub account to contribute to the documentation.

Edit this document

Edit this document

The source code of this file is hosted on GitHub. Everyone can update and fix errors in this document with few clicks - no downloads needed.

  1. Login with your GitHub account.
  2. Go to IsInt on GitHub.
  3. Edit file contents using GitHub's text editor in your web browser
  4. Fill in the Commit message text box at the end of the page telling why you did the changes. Press Propose file change button next to it when done.
  5. On Send a pull request page you don't need to fill in text anymore. Just press Send pull request button.
  6. Your changes are now queued for review under project's Pull requests tab on GitHub.