README

A package to compare two string with trigramm algorithm like as PostgreSql pg_trgm package similarity() function.

Installing

Run command in console

composer require laragrad/str-trgm

Functions

All functions are static.

similarity()

Return similarity value (0..1) for two strings.

Syntax:

similarity(string $text1, string $text2) : float

Arguments:

• $text1 - First word or sentense
• $text2 - Second word or sentense

Returns a value of similarity in range from 0 to 1.

getSentenceTrgms

Returns an array of trigramms for sentense.

Syntax:

getSentenceTrgms(string $text) : array

Arguments:

• $text - Sentense string

Returns an array of trigramms.

getWordTrgms

Returns an array of trigramms for word.

Syntax:

getWordTrgms(string $text) : array

Arguments:

• $text - Word string

Returns array of trigramms.

normalizeSentense()

Function normalizes a string.

• convert string to lower case,
• replace any symbols by space,
• replace double spaces by single space.

Syntax:

normalizeSentence(string $text) : string

Arguments:

• $text - Source string

Returns normalized string.