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File: readme.txt
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Description: readme
Class: PHP Similar Text Percentage
Compare two strings to compute a similarity score
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Last change: improve doc
Date: 5 years ago
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PHP Similar Text Percentage: Compare two strings to compute a similarity score ============================================================================== [![Build Status](https://travis-ci.org/manuwhat/similar-text.svg?branch=master)](https://travis-ci.org/manuwhat/similar-text) [![Scrutinizer Code Quality](https://scrutinizer-ci.com/g/manuwhat/similar-text/badges/quality-score.png?b=master)](https://scrutinizer-ci.com/g/manuwhat/similar-text/?branch=master) [![Build Status](https://scrutinizer-ci.com/g/manuwhat/similar-text/badges/build.png?b=master)](https://scrutinizer-ci.com/g/manuwhat/similar-text/build-status/master) [![Code Intelligence Status](https://scrutinizer-ci.com/g/manuwhat/similar-text/badges/code-intelligence.svg?b=master)](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. **Requires**: PHP 5.3+ ### 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 Require the library by issuing this command: ```bash 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: ```php 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 implementation) ```php function areAnagrams($a, $b) { return Ezama\similar_text::similarText($a, $b, 2, true, $check)?$check['similar'] === 100.0&&$check['contain']===true:false; } areAnagrams('qwerty', 'ytrewq');// return true; ``` Nb: some functions and methods are more subtle than one can think. For example the method simpleCommonTextSimilarities::aIsSuperStringOfB and its helper aIsSuperStringOfB are not at all equal to the usual checking functions built on top of preg_match ,stripos and PHP similar functions a simple example is : ```php function aisSuperStringOfB_stripos($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; ``` ### How To run unit tests ```bash phpunit ./tests ```