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[Utility & Helpers](/categories/utility) 4. / 5. timch56888/hashids2 ActiveLibrary[Utility & Helpers](/categories/utility) timch56888/hashids2 =================== Generate short, unique, non-sequential ids (like YouTube and Bitly) from numbers 00PHPCI passing Since Jan 12Pushed 4mo ago1 watchersCompare [ Source](https://github.com/timch56888/hashids2)[ Packagist](https://packagist.org/packages/timch56888/hashids2)[ RSS](/packages/timch56888-hashids2/feed)WikiDiscussions master Synced 1mo ago READMEChangelogDependenciesVersions (1)Used By (0) [![hashids](https://camo.githubusercontent.com/c18b3677d02769b80412ab8398f7363896ce557caeac8453ee8249cd68b2c6d1/68747470733a2f2f686173686964732e6f72672f7075626c69632f696d672f686173686964732e676966 "Hashids")](https://hashids.org/) [![Build Status](https://camo.githubusercontent.com/6efdf203ba0f8378cc2453df525837f714c96f71e9e6588713296abfadc5ead7/68747470733a2f2f62616467656e2e6e65742f6769746875622f636865636b732f76696e6b6c612f686173686964733f6c6162656c3d6275696c642669636f6e3d676974687562)](https://github.com/vinkla/hashids/actions)[![Monthly Downloads](https://camo.githubusercontent.com/fb34d1cd660b022a122b30f006da2cf4efd90c057be336cdc6d5c2e701688ac8/68747470733a2f2f62616467656e2e6e65742f7061636b61676973742f646d2f686173686964732f68617368696473)](https://packagist.org/packages/hashids/hashids/stats)[![Latest Version](https://camo.githubusercontent.com/8e6f5aa3d339dd83f6ef6c4a7434abd804a998f283995f26ef6524010433d5cd/68747470733a2f2f62616467656e2e6e65742f7061636b61676973742f762f686173686964732f68617368696473)](https://packagist.org/packages/hashids/hashids) **Hashids** is a small PHP library to generate YouTube-like ids from numbers. Use it when you don't want to expose your database numeric ids to users: Getting started --------------- [](#getting-started) Require this package, with [Composer](https://getcomposer.org), in the root directory of your project. ``` composer require hashids/hashids ``` Then you can import the class into your application: ``` use Hashids\Hashids; $hashids = new Hashids(); $hashids->encode(1); ``` > **Note** Hashids require either [`bcmath`](https://secure.php.net/manual/en/book.bc.php) or [`gmp`](https://secure.php.net/manual/en/book.gmp.php) extension in order to work. Quick Example ------------- [](#quick-example) ``` use Hashids\Hashids; $hashids = new Hashids(); $id = $hashids->encode(1, 2, 3); // o2fXhV $numbers = $hashids->decode($id); // [1, 2, 3] ``` More Options ------------ [](#more-options) #### A few more ways to pass input ids to the `encode()` function: [](#a-few-more-ways-to-pass-input-ids-to-the-encode-function) ``` use Hashids\Hashids; $hashids = new Hashids(); $hashids->encode(1, 2, 3); // o2fXhV $hashids->encode([1, 2, 3]); // o2fXhV $hashids->encode('1', '2', '3'); // o2fXhV $hashids->encode(['1', '2', '3']); // o2fXhV ``` #### Making your output ids unique [](#making-your-output-ids-unique) Pass a project name to make your output ids unique: ``` use Hashids\Hashids; $hashids = new Hashids('My Project'); $hashids->encode(1, 2, 3); // Z4UrtW $hashids = new Hashids('My Other Project'); $hashids->encode(1, 2, 3); // gPUasb ``` #### Use padding to make your output ids longer [](#use-padding-to-make-your-output-ids-longer) Note that output ids are only padded to fit **at least** a certain length. It doesn't mean that they will be *exactly* that length. ``` use Hashids\Hashids; $hashids = new Hashids(); // no padding $hashids->encode(1); // jR $hashids = new Hashids('', 10); // pad to length 10 $hashids->encode(1); // VolejRejNm ``` #### Using a custom alphabet [](#using-a-custom-alphabet) ``` use Hashids\Hashids; $hashids = new Hashids('', 0, 'abcdefghijklmnopqrstuvwxyz'); // all lowercase $hashids->encode(1, 2, 3); // mdfphx ``` #### Encode hex instead of numbers [](#encode-hex-instead-of-numbers) Useful if you want to encode [Mongo](https://www.mongodb.com)'s ObjectIds. Note that *there is no limit* on how large of a hex number you can pass (it does not have to be Mongo's ObjectId). ``` use Hashids\Hashids; $hashids = new Hashids(); $id = $hashids->encodeHex('507f1f77bcf86cd799439011'); // y42LW46J9luq3Xq9XMly $hex = $hashids->decodeHex($id); // 507f1f77bcf86cd799439011 ``` Pitfalls -------- [](#pitfalls) 1. When decoding, output is always an array of numbers (even if you encoded only one number): ``` use Hashids\Hashids; $hashids = new Hashids(); $id = $hashids->encode(1); $hashids->decode($id); // [1] ``` 2. Encoding negative numbers is not supported. 3. If you pass bogus input to `encode()`, an empty string will be returned: ``` use Hashids\Hashids; $hashids = new Hashids(); $id = $hashids->encode('123a'); $id === ''; // true ``` 4. Do not use this library as a security measure. **Do not** encode sensitive data with it. Hashids is **not** an encryption library. Randomness ========== [](#randomness) The primary purpose of Hashids is to obfuscate numeric ids. It's **not** meant or tested to be used as a security or compression tool. Having said that, this algorithm does try to make these ids random and unpredictable: There is no pattern shown when encoding multiple identical numbers (3 shown in the following example): ``` use Hashids\Hashids; $hashids = new Hashids(); $hashids->encode(5, 5, 5); // A6t1tQ ``` The same is true when encoding a series of numbers vs. encoding them separately: ``` use Hashids\Hashids; $hashids = new Hashids(); $hashids->encode(1, 2, 3, 4, 5, 6, 7, 8, 9, 10); // wpfLh9iwsqt0uyCEFjHM $hashids->encode(1); // jR $hashids->encode(2); // k5 $hashids->encode(3); // l5 $hashids->encode(4); // mO $hashids->encode(5); // nR ``` Curse words! #$%@ ----------------- [](#curse-words-) This code was written with the intent of placing the output ids in visible places, like the URL. Therefore, the algorithm tries to avoid generating most common English curse words by generating ids that never have the following letters next to each other: ``` c, f, h, i, s, t, u ``` ### Health Score 20 — LowBetter than 14% of packages Maintenance52 Moderate activity, may be stable Popularity0 Limited adoption so far Community20 Small or concentrated contributor base Maturity12 Early-stage or recently created project Bus Factor1 Top contributor holds 71.2% 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. 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