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[Validation & Sanitization](/categories/validation) 4. / 5. liagkos/laravel-grvatid-validator ActiveLibrary[Validation & Sanitization](/categories/validation) liagkos/laravel-grvatid-validator ================================= Validator for Laravel in order to check if a number is POTENTIALLY valid in Greek VAT ID Registry v1.0.0(8y ago)2101MITPHPPHP >=7.1.3 Since Apr 4Pushed 8y ago2 watchersCompare [ Source](https://github.com/liagkos/laravel-grvatid-validator)[ Packagist](https://packagist.org/packages/liagkos/laravel-grvatid-validator)[ RSS](/packages/liagkos-laravel-grvatid-validator/feed)WikiDiscussions master Synced yesterday READMEChangelog (1)Dependencies (2)Versions (2)Used By (0) Greek VAT ID Validator for Laravel ================================== [](#greek-vat-id-validator-for-laravel) The Greek VAT ID validator checks if a number is POTENTIALLY valid in Greek VAT ID Registry. Validator does NOT check if VAT ID does actually belong to a person or a company, it checks only if it obeys the algorithm of a valid Greek VAT ID: ``` 1. VAT ID = 090000045 2. Calculate sum of 0*2^8+9*2^7+0*2^6+0*2^5+0*2^4+0*2^3+0*2^2+4*2^1 = 1160 3. Calculate mod11 = 1160 % 11 = 5 4. Calculate mod10 = 5 % 10 = 5 5. mod10 (5) is equal to 5 (last digit), so VAT ID is VALID ``` ``` 1. VAT ID = 123456789 2. Calculate sum of 1*2^8+2*2^7+3*2^6+4*2^5+5*2^4+6*2^3+7*2^2+8*2^1 = 1004 3. Calculate mod11 = 1004 % 11 = 3 4. Calculate mod10 = 3 % 10 = 3 5. mod10 (3) is not equal to 9 (last digit), so VAT ID is INVALID ``` Installation ------------ [](#installation) Install the package using Composer: ``` composer require liagkos/laravel-grvatid-validator ``` Laravel's service provider discovery will automatically configure the Grvatval service provider for you. Using the `grvatval` validator ------------------------------ [](#using-the-grvatval-validator) After installation, the `grvatval` validator will be available for use directly in your validation rules. ``` 'vatid' => 'grvatval', ``` Within the context of a registration form, it would look like this: ``` return Validator::make($data, [ 'name' => 'required', 'email' => 'required|string|email', 'password' => 'required', 'vatid' => 'required|grvatval' ]); ``` Using the Rule Object --------------------- [](#using-the-rule-object) Alternatively, you can use the `Liagkos\Grvatval\Grvatval` [Validation Rule Object](https://laravel.com/docs/5.5/validation#using-rule-objects)instead of the `grvatval` alias if you prefer: ``` return Validator::make($data, [ 'name' => 'required', 'email' => 'required|string|email', 'password' => 'required', 'vatid' => ['required', new \Liagkos\Grvatval\Grvatval], ]); ``` Validation message ------------------ [](#validation-message) You will need to assign your own validation message within the `resources/lang/*/validation.php` file(s). Both the Rule object and the `grvatval` validator alias refer to the validation string `validation.grvatval`. Testing ------- [](#testing) Just run the the test in `tests` directory. I use the [orchestra/testbench](https://github.com/orchestral/testbench) along with PHPUnit. Credits ------- [](#credits) Since I'm quite new in all Laravel stuff, I got the idea from [Stephen Rees-Carten](https://github.com/valorin) and his own [valorin/pwned-validator](https://github.com/valorin/pwned-validator) validator, from whom I used some code and README.md stuff, modified accordingly to make this validator. Thank you Stephen, live long and propsper! ### Health Score 26 — LowBetter than 43% of packages Maintenance20 Infrequent updates — may be unmaintained Popularity9 Limited adoption so far Community9 Small or concentrated contributor base Maturity58 Maturing project, gaining track record Bus Factor1 Top contributor holds 100% of commits — single point of failure How is this calculated?**Maintenance (25%)** — Last commit recency, latest release date, and issue-to-star ratio. Uses a 2-year decay window. **Popularity (30%)** — Total and monthly downloads, GitHub stars, and forks. Logarithmic scaling prevents top-heavy scores. **Community (15%)** — Contributors, dependents, forks, watchers, and maintainers. Measures real ecosystem engagement. **Maturity (30%)** — Project age, version count, PHP version support, and release stability. ### Release Activity Cadence Unknown Total 1 Last Release 2960d ago ### Community Maintainers ![](https://avatars.githubusercontent.com/u/15843357?v=4)[nasos](/maintainers/liagkos)[@liagkos](https://github.com/liagkos) --- Top Contributors [![liagkos](https://avatars.githubusercontent.com/u/15843357?v=4)](https://github.com/liagkos "liagkos (3 commits)") --- Tags greecelaravellaravel-packagevalidationvalidation-libraryvat-validationvat-validator ### Embed Badge ![Health badge](/badges/liagkos-laravel-grvatid-validator/health.svg) ``` [![Health](https://phpackages.com/badges/liagkos-laravel-grvatid-validator/health.svg)](https://phpackages.com/packages/liagkos-laravel-grvatid-validator) ``` ### Alternatives [spatie/laravel-honeypot Preventing spam submitted through forms 1.6k6.0M60](/packages/spatie-laravel-honeypot)[proengsoft/laravel-jsvalidation Validate forms transparently with Javascript reusing your Laravel Validation Rules, Messages, and FormRequest 1.1k2.3M49](/packages/proengsoft-laravel-jsvalidation)[stevebauman/purify An HTML Purifier / Sanitizer for Laravel 5325.6M19](/packages/stevebauman-purify)[axlon/laravel-postal-code-validation Worldwide postal code validation for Laravel and Lumen 3853.3M1](/packages/axlon-laravel-postal-code-validation)[sunspikes/clamav-validator Custom Laravel 5 anti-virus validator for file uploads. 3651.8M3](/packages/sunspikes-clamav-validator)[laravel-validation-rules/credit-card Validate credit card number, expiration date, cvc 2412.2M5](/packages/laravel-validation-rules-credit-card) PHPackages © 2026 [Directory](/)[Categories](/categories)[Trending](/trending)[Changelog](/changelog)[Analyze](/analyze)