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[Validation & Sanitization](/categories/validation) 4. / 5. michaelokgb/zxcvbn-php ActiveLibrary[Validation & Sanitization](/categories/validation) michaelokgb/zxcvbn-php ====================== Realistic password strength estimation PHP library based on Zxcvbn JS 4.5.0(7y ago)0311MITPHPPHP ^7.0 Since Apr 7Pushed 7y ago1 watchersCompare [ Source](https://github.com/MiChAeLoKGB/zxcvbn-php)[ Packagist](https://packagist.org/packages/michaelokgb/zxcvbn-php)[ Docs](https://github.com/MiChAeLoKGB/zxcvbn-php)[ RSS](/packages/michaelokgb-zxcvbn-php/feed)WikiDiscussions master Synced yesterday READMEChangelog (1)Dependencies (4)Versions (11)Used By (0) Zxcvbn-PHP is a password strength estimator using pattern matching and minimum entropy calculation. Zxcvbn-PHP is based on the [the Javascript zxcvbn project](https://github.com/dropbox/zxcvbn) from [Dropbox and @lowe](https://tech.dropbox.com/2012/04/zxcvbn-realistic-password-strength-estimation/). "zxcvbn" is bad password, just like "qwerty" and "123456". > zxcvbn attempts to give sound password advice through pattern matching and conservative entropy calculations. It finds 10k common passwords, common American names and surnames, common English words, and common patterns like dates, repeats (aaa), sequences (abcd), and QWERTY patterns. [![Build Status](https://camo.githubusercontent.com/bc788a472e2ee0065fc15f9b6b5e3dd303b801192fec668eff810a465ba7aea3/68747470733a2f2f7472617669732d63692e6f72672f4d69436841654c6f4b47422f7a786376626e2d7068702e706e673f6272616e63683d6d6173746572)](https://travis-ci.org/MiChAeLoKGB/zxcvbn-php)[![Coverage Status](https://camo.githubusercontent.com/5b8b0b5335750c95f0384035023a96a1583b474d797b15903e36e73abd2f2e9c/68747470733a2f2f636f766572616c6c732e696f2f7265706f732f6769746875622f4d69436841654c6f4b47422f7a786376626e2d7068702f62616467652e7376673f6272616e63683d6d6173746572)](https://coveralls.io/github/MiChAeLoKGB/zxcvbn-php?branch=master)[![Latest Stable Version](https://camo.githubusercontent.com/2702da9284d77458baa3e8aba2f764fdb7812ae7943f2cfa6a90d54279fa7c2b/68747470733a2f2f706f7365722e707567782e6f72672f4d69436841654c6f4b47422f7a786376626e2d7068702f762f737461626c65)](https://packagist.org/packages/mkopinsky/zxcvbn-php)[![License](https://camo.githubusercontent.com/18f6d509daff381ec37dec83dd357270f9f8d7aaf4fedc186cdb23ea50065159/68747470733a2f2f706f7365722e707567782e6f72672f4d69436841654c6f4b47422f7a786376626e2d7068702f6c6963656e7365)](https://packagist.org/packages/MiChAeLoKGB/zxcvbn-php) Installation ------------ [](#installation) The library can be installed with [Composer](http://getcomposer.org) by adding it as a dependency to your composer.json file. ``` { "require": { "michaelokgb/zxcvbn-php": "^4.5" } } ``` After running `php composer.phar update` on the command line, include the autoloader in your PHP scripts so that the ZxcvbnPhp class is available. ``` require_once 'vendor/autoload.php'; ``` Usage ----- [](#usage) ``` use ZxcvbnPhp\Zxcvbn; $userData = [ 'Marco', 'marco@example.com' ]; $zxcvbn = new Zxcvbn(); $strength = $zxcvbn->passwordStrength('password', $userData); echo $strength['score']; // will print 0 $strength = $zxcvbn->passwordStrength('correct horse battery staple'); echo $strength['score']; // will print 4 ``` ### Acknowledgements [](#acknowledgements) Thanks to: - @lowe for the original [Javascript Zxcvbn](https://github.com/lowe/zxcvbn) - [@Dreyer's port](https://github.com/Dreyer/php-zxcvbn) for reference for initial implementation - [bjeavon's implementation](https://github.com/bjeavons/zxcvbn-php) for building out zxcvbn-php as a solid initial port of the Dropbox library with composer support and unit tests ### Health Score 29 — LowBetter than 60% of packages Maintenance20 Infrequent updates — may be unmaintained Popularity8 Limited adoption so far Community15 Small or concentrated contributor base Maturity64 Established project with proven stability Bus Factor2 2 contributors hold 50%+ of commits 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 Every ~231 days Recently: every ~355 days Total 9 Last Release 2572d ago Major Versions 0.3.0 → 4.4.22018-09-14 PHP version history (4 changes)0.1.0PHP >=5.3.0 0.2.0PHP ^5.3 || ^7.0 4.4.2PHP ^5.6 || ^7.0 4.5.0PHP ^7.0 ### Community Maintainers ![](https://www.gravatar.com/avatar/9295d08f59cf2fd9b63c7b7812a6aa3bc0756398f4e21fffc23a22c3b29c6041?d=identicon)[MiChAeLoKGB](/maintainers/MiChAeLoKGB) --- Top Contributors [![clamburger](https://avatars.githubusercontent.com/u/1396298?v=4)](https://github.com/clamburger "clamburger (62 commits)")[![mkopinsky](https://avatars.githubusercontent.com/u/591435?v=4)](https://github.com/mkopinsky "mkopinsky (53 commits)")[![bjeavons](https://avatars.githubusercontent.com/u/94468?v=4)](https://github.com/bjeavons "bjeavons (41 commits)")[![MiChAeLoKGB](https://avatars.githubusercontent.com/u/6197503?v=4)](https://github.com/MiChAeLoKGB "MiChAeLoKGB (16 commits)")[![texdc](https://avatars.githubusercontent.com/u/1590605?v=4)](https://github.com/texdc "texdc (8 commits)")[![paragonie-scott](https://avatars.githubusercontent.com/u/11591518?v=4)](https://github.com/paragonie-scott "paragonie-scott (2 commits)")[![PReimers](https://avatars.githubusercontent.com/u/1785288?v=4)](https://github.com/PReimers "PReimers (1 commits)") --- Tags passwordzxcvbn ### Code Quality TestsPHPUnit Code StylePHP\_CodeSniffer ### Embed Badge ![Health badge](/badges/michaelokgb-zxcvbn-php/health.svg) ``` [![Health](https://phpackages.com/badges/michaelokgb-zxcvbn-php/health.svg)](https://phpackages.com/packages/michaelokgb-zxcvbn-php) ``` ### Alternatives [bjeavons/zxcvbn-php Realistic password strength estimation PHP library based on Zxcvbn JS 86917.5M63](/packages/bjeavons-zxcvbn-php)[rollerworks/password-strength-validator Password-strength validator for Symfony 1455.7M6](/packages/rollerworks-password-strength-validator)[rollerworks/password-strength-bundle Password-strength validator bundle for Symfony 1433.7M6](/packages/rollerworks-password-strength-bundle)[schuppo/password-strength This package provides a validator for ensuring strong passwords in Laravel 4 applications. 1432.7M1](/packages/schuppo-password-strength)[kartik-v/strength-meter A dynamic strength meter for password input validation with various configurable options. 871.2M4](/packages/kartik-v-strength-meter)[infinitypaul/laravel-password-history-validation Prevent users from reusing recently used passwords 86214.4k](/packages/infinitypaul-laravel-password-history-validation) PHPackages © 2026 [Directory](/)[Categories](/categories)[Trending](/trending)[Changelog](/changelog)[Analyze](/analyze)