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[Utility & Helpers](/categories/utility) 4. / 5. dmhendricks/hash-int ActiveLibrary[Utility & Helpers](/categories/utility) dmhendricks/hash-int ==================== A PHP class to generate a short hash from an integer. 1.0.0(7y ago)246MITPHPPHP >=4.0.4 Since Oct 9Pushed 6y ago2 watchersCompare [ Source](https://github.com/dmhendricks/hash-int)[ Packagist](https://packagist.org/packages/dmhendricks/hash-int)[ Docs](https://github.com/dmhendricks/hash-int)[ RSS](/packages/dmhendricks-hash-int/feed)WikiDiscussions master Synced 3d ago READMEChangelog (1)DependenciesVersions (2)Used By (0) [![Release](https://camo.githubusercontent.com/3fba616f1cd3995feec7651c0d8cbf4a6a00a60b6cb53c6ddf1f282d5698fa4c/68747470733a2f2f696d672e736869656c64732e696f2f6769746875622f72656c656173652f646d68656e647269636b732f686173682d696e742e7376673f7374796c653d666c61742d73717561726526636f6c6f72423d363633333939)](https://github.com/dmhendricks/hash-int/releases)[![GitHub 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Hash Integer ============ [](#hash-integer) A PHP class to generate an alphanumeric hash of specified length from an integer. ``` composer require dmhendricks/hash-int ``` ### Requirements [](#requirements) - PHP 5.6 or higher - [BC Math](https://www.php.net/manual/en/book.bc.php): `apt install php7.x-bcmath` ### Usage [](#usage) ``` $num = 456; /** * Create a 7-character hash from integer */ $hash = \CloudVerve\HashInt::hash( $num, 7 ); // Unhash the string $unhashed = \CloudVerve\HashInt::unhash( $hash ); echo 'Hashed: ' . $hash . ''; echo 'Unhashed: ' . $unhashed; ``` ### Result [](#result) ``` Hashed: p3Wq1aC Unhashed: 456 ``` Original [Author](https://github.com/KevBurnsJr) Notes ------------------------------------------------------ [](#original-author-notes) Paraphrased ([source](http://web.archive.org/web/20130727034425/http://blog.kevburnsjr.com/php-unique-hash)): > I wanted a short, unique, alphanumeric hash with a sequence that is difficult to deduce. I could create it with md5 and trim the first *n* chars, but storing a truncated checksum in a unique field means that the frequency of collisions will increase geometrically as the number of unique keys for a base 62-encoded integer approaches 62^n. I'd rather do it right than create a time bomb. ### Base 62 [](#base-62) Hashes are base 62 encoded base 10 integers. 1=1, 10=a, 36=Z, 61=z, 62=10, 72=1a, etc. ### 62, 3844, 238328, 14776336, 916132832, 56800235584, 3521614606208 [](#62-3844-238328-14776336-916132832-56800235584-3521614606208) 1 character = 62 permutations, 2 characters = 3844 permutations, etc. ### 41, 2377, 147299, 9132313, 566201239, 35104476161, 2176477521929 [](#41-2377-147299-9132313-566201239-35104476161-2176477521929) 41 = next highest prime from golden mean of 62. 2377 = next highest prime from golden mean of 3844. ### Uniqueness [](#uniqueness) > I chose to use primes to ensure hash uniqueness. Any prime greater than one half 62^n will do, but if you use a prime near 62^n or 62^n/2 or 2\*62^n/3 etc, you will detect a linearity in the sequence at certain points in the ring. ### Appearance of Randomness [](#appearance-of-randomness) > I chose primes near the golden ratio to maximize the appearance of randomness. Given a small set of hashes (even with the associated id) it would be difficult for anyone to guess the next hash. ### ⚠️ Minimum-Security Technique [](#warning-minimum-security-technique) This is a thin rotation and base re-encoding obfuscation algorithm, not an encryption algorithm. Don't use this to encrypt sensitive information - use it to obfuscate integer IDs or create short reference keys (as an example, for short URLs). ### Special Thanks [](#special-thanks) - [Prime Numbers Generator and Checker](https://www.numberempire.com/primenumbers.php?utm_source=github.com&utm_medium=referral&utm_content=link&utm_campaign=dmhendricks%2Fhash-int) - [Ernesto Preste](https://www.linkedin.com/in/ernesto-preste-4377912b/) for adding [bcmath support](http://web.archive.org/web/20130727034425/http://blog.kevburnsjr.com/php-unique-hash#comment-2792) - [Padraig Kennedy](https://twitter.com/Padraig) for adding [hash reversibility](http://web.archive.org/web/20130727034425/http://blog.kevburnsjr.com/php-unique-hash#comment-2805) [![Analytics](https://camo.githubusercontent.com/577336ab601b318ddd3effdf2b65939d3150f7e86b854bd83c5bd1baff759fc2/68747470733a2f2f67612d626561636f6e2e61707073706f742e636f6d2f55412d3132363230353736352d312f646d68656e647269636b732f686173682d696e743f666c6174)](https://ga-beacon.appspot.com/?utm_source=github.com&utm_medium=campaign&utm_content=button&utm_campaign=dmhendricks%2Fhash-int) ### Health Score 27 — LowBetter than 49% of packages Maintenance20 Infrequent updates — may be unmaintained Popularity11 Limited adoption so far Community10 Small or concentrated contributor base Maturity56 Maturing project, gaining track record Bus Factor1 Top contributor holds 88.9% 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 2774d ago ### Community Maintainers ![](https://www.gravatar.com/avatar/c786390f81ee978c57d2648023319ac6dd9c2ddd633574e42c5252a8815e55df?d=identicon)[dmhendricks](/maintainers/dmhendricks) --- Top Contributors [![dmhendricks](https://avatars.githubusercontent.com/u/8184361?v=4)](https://github.com/dmhendricks "dmhendricks (8 commits)")[![daniel-thm](https://avatars.githubusercontent.com/u/221158380?v=4)](https://github.com/daniel-thm "daniel-thm (1 commits)") --- Tags base62hashhash-functionsshort-idshorturltinyurl-shortener ### Embed Badge ![Health badge](/badges/dmhendricks-hash-int/health.svg) ``` [![Health](https://phpackages.com/badges/dmhendricks-hash-int/health.svg)](https://phpackages.com/packages/dmhendricks-hash-int) ``` ### Alternatives [phpxmlrpc/polyfill-xmlrpc A pure-php reimplementation of the API exposed by the native XML-RPC extension 12369.8k2](/packages/phpxmlrpc-polyfill-xmlrpc)[duoshuo/uuid A PHP 5.4+ library for generating RFC 4122 version 1, 3, 4, and 5 universally unique identifiers (UUID) 1039.2k](/packages/duoshuo-uuid) PHPackages © 2026 [Directory](/)[Categories](/categories)[Trending](/trending)[Changelog](/changelog)[Analyze](/analyze)