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[Utility & Helpers](/categories/utility) 4. / 5. manuwhat/similar-text ActiveLibrary[Utility & Helpers](/categories/utility) manuwhat/similar-text ===================== Similar-text - Compare two strings to compute a similarity score 13.4k↓50%3PHP Since Apr 29Pushed 7y ago1 watchersCompare [ Source](https://github.com/manuwhat/similar-text)[ Packagist](https://packagist.org/packages/manuwhat/similar-text)[ RSS](/packages/manuwhat-similar-text/feed)WikiDiscussions master Synced 1mo ago READMEChangelogDependenciesVersions (3)Used By (0) PHP Similar Text Percentage: Compare two strings to compute a similarity score ============================================================================== [](#php-similar-text-percentage-compare-two-strings-to-compute-a-similarity-score) [![Build Status](https://camo.githubusercontent.com/89c968235e625d01087ba8e3832c167da9a16557fe73def7f7a2f06288773d30/68747470733a2f2f7472617669732d63692e6f72672f6d616e75776861742f73696d696c61722d746578742e7376673f6272616e63683d6d6173746572)](https://travis-ci.org/manuwhat/similar-text)[![Scrutinizer Code Quality](https://camo.githubusercontent.com/456b17f1ee7380d389ab1d3e2425f2f2abc7ee39e3f6c04daccb5fa2359c2897/68747470733a2f2f7363727574696e697a65722d63692e636f6d2f672f6d616e75776861742f73696d696c61722d746578742f6261646765732f7175616c6974792d73636f72652e706e673f623d6d6173746572)](https://scrutinizer-ci.com/g/manuwhat/similar-text/?branch=master)[![Build Status](https://camo.githubusercontent.com/8dcf0783e9b2b756b9f5016ef6f40a8987ab8f79fe5c9b773d5579cf0c43a886/68747470733a2f2f7363727574696e697a65722d63692e636f6d2f672f6d616e75776861742f73696d696c61722d746578742f6261646765732f6275696c642e706e673f623d6d6173746572)](https://scrutinizer-ci.com/g/manuwhat/similar-text/build-status/master)[![Code Intelligence Status](https://camo.githubusercontent.com/2a4493abd92c3a29852831a8b4b848f88d4bc545f362f88152bee058067089d4/68747470733a2f2f7363727574696e697a65722d63692e636f6d2f672f6d616e75776861742f73696d696c61722d746578742f6261646765732f636f64652d696e74656c6c6967656e63652e7376673f623d6d6173746572)](https://scrutinizer-ci.com/code-intelligence) ### Library which help to Compare two strings to compute a similarity score and get stats on how linked are the strings. [](#library-which-help-to-compare-two-strings-to-compute-a-similarity-score-and-get-stats-on-how-linked-are-the-strings) **Requires**: PHP 5.3+ ### What this library exactly does? [](#what-this-library-exactly-does) this library can compare two strings to compute a similarity score. It takes the text of two strings and analyze them using pure PHP code to evaluate how equal they are. The class returns a number that represents a percentage of the two strings to tell the level of similarity. Based on the stats provided It actually can help to detect similarity even if these cases occurred : WORD REORDER,WHITESPACE AND PUNCTUATION,REMOVE WORDS,ADD WORDS,URL STRIPPING, FORM ACRONYM,EXPAND ACRONYM,STEMMING,SUBSTRING ,SUPERSTRING,ABBREVIATION ,ANAGRAM ### How to use it [](#how-to-use-it) Require the library by issuing this command: ``` composer require manuwhat/similar-text ``` Add `require 'vendor/autoload.php';` to the top of your script. Next, use it in your script, just like this: ``` use ezama/similar-text; 100.0===similarText('qwerty', 'ytrewq') ``` This is an example of how to use the stats to check a special case.Here we will use them to check about anagrams (note that this has already been implemented in the library check the file similar\_text.php to know more about all available implementations) ``` function areAnagrams($a, $b) { return Ezama\similar_text::similarText($a, $b, 2, true, $check)?$check['similar'] === 100.0&&$check['contain']===true:false; } areAnagrams('qwerty', 'ytrewq');// return true; ``` Nb: some functions and methods are more subtle than one can think. For example the method simpleCommonTextSimilarities::aIsSuperStringOfB and its helper aIsSuperStringOfB are not at all equal to the usual checking functions built on top of preg\_match ,stripos and PHP similar functions a simple example is : ``` function aisSuperStringOfB_stripos($a, $b) { return false!==stripos($a,$b); } function aisSuperStringOfB_PCRE($a, $b) { return preg_match('#'.preg_quote($b).'#i',$a); } require './vendor/manuwhat/similar-text/similar_text.php'; aIsSuperStringOfB('mum do you want to cook something', 'do you cook something mum');//return true; aIsSuperStringOfB_stripos('mum do you want to cook something', 'do you cook something mum');//false; aIsSuperStringOfB_PCRE('mum do you want to cook something', 'do you cook something mum');//return false; ``` The library also contains common distance algorithms such unlimited string length levenshtein ,levenshtein-damerau ,jaro ,jaro-winkler ,hamming ,dice implementation ### How To run unit tests [](#how-to-run-unit-tests) ``` phpunit ./tests ``` ### Health Score 26 — LowBetter than 43% of packages Maintenance20 Infrequent updates — may be unmaintained Popularity25 Limited adoption so far Community11 Small or concentrated contributor base Maturity40 Maturing project, gaining track record Bus Factor1 Top contributor holds 85.1% 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. ### Community Maintainers ![](https://www.gravatar.com/avatar/06f6de07cb99fb97189e3607288a40110ad055335e15fd5633c98751b78b6211?d=identicon)[manuwhat](/maintainers/manuwhat) --- Top Contributors [![manuwhat](https://avatars.githubusercontent.com/u/29569475?v=4)](https://github.com/manuwhat "manuwhat (40 commits)")[![scrutinizer-auto-fixer](https://avatars.githubusercontent.com/u/6253494?v=4)](https://github.com/scrutinizer-auto-fixer "scrutinizer-auto-fixer (7 commits)") ### Embed Badge ![Health badge](/badges/manuwhat-similar-text/health.svg) ``` [![Health](https://phpackages.com/badges/manuwhat-similar-text/health.svg)](https://phpackages.com/packages/manuwhat-similar-text) ``` PHPackages © 2026 [Directory](/)[Categories](/categories)[Trending](/trending)[Changelog](/changelog)[Analyze](/analyze)