Pluf_Text_Stemmer_Porter Class Reference

List of all members.

Static Public Member Functions
static	stem ($word)
Static Private Member Functions
static	step1ab ($word)
static	step1c ($word)
static	step2 ($word)
static	step3 ($word)
static	step4 ($word)
static	step5 ($word)
static	replace (&$str, $check, $repl, $m=null)
static	m ($str)
static	doubleConsonant ($str)
static	cvc ($str)
Static Private Attributes
static	$regex_consonant = '(?:[bcdfghjklmnpqrstvwxz]|(?<=[aeiou])y|^y)'
static	$regex_vowel = '(?:[aeiou]|(?<![aeiou])y)'

---

Detailed Description

Copyright (c) 2005 Richard Heyes (http://www.phpguru.org/)

All rights reserved.

This script is free software.

Downloaded from: http://tartarus.org/~martin/PorterStemmer/php.txt Modified to be multibyte compatible. PHP5 Implementation of the Porter Stemmer algorithm. Certain elements were borrowed from the (broken) implementation by Jon Abernathy.

Usage:

$stem = Pluf_Text_Stemmer_Porter::stem($word);

How easy is that?

---

Member Function Documentation

static Pluf_Text_Stemmer_Porter::stem

(

$

word

)

[static]

Stems a word. Simple huh?

Parameters:

string

$word Word to stem

Returns:

string Stemmed word

static Pluf_Text_Stemmer_Porter::step1ab

(

$

word

)

[static, private]

Step 1

static Pluf_Text_Stemmer_Porter::step1c

(

$

word

)

[static, private]

Step 1c

Parameters:

string

$word Word to stem

static Pluf_Text_Stemmer_Porter::step2

(

$

word

)

[static, private]

Step 2

Parameters:

string

$word Word to stem

static Pluf_Text_Stemmer_Porter::step3

(

$

word

)

[static, private]

Step 3

Parameters:

string

$word String to stem

static Pluf_Text_Stemmer_Porter::step4

(

$

word

)

[static, private]

Step 4

Parameters:

string

$word Word to stem

static Pluf_Text_Stemmer_Porter::step5

(

$

word

)

[static, private]

Step 5

Parameters:

string

$word Word to stem

static Pluf_Text_Stemmer_Porter::replace	(	&$	str,
		$	check,
		$	repl,
		$	m = null
	)			[static, private]

Replaces the first string with the second, at the end of the string. If third arg is given, then the preceding string must match that m count at least.

Parameters:

	string	$str String to check
	string	$check Ending to check for
	string	$repl Replacement string
	int	$m Optional minimum number of m() to meet

Returns:

bool Whether the $check string was at the end of the $str string. True does not necessarily mean that it was replaced.

static Pluf_Text_Stemmer_Porter::m

(

$

str

)

[static, private]

What, you mean it's not obvious from the name?

m() measures the number of consonant sequences in $str. if c is a consonant sequence and v a vowel sequence, and <..> indicates arbitrary presence,

<v> gives 0 vc<v> gives 1 vcvc<v> gives 2 vcvcvc<v> gives 3

Parameters:

string

$str The string to return the m count for

Returns:

int The m count

static Pluf_Text_Stemmer_Porter::doubleConsonant

(

$

str

)

[static, private]

Returns true/false as to whether the given string contains two of the same consonant next to each other at the end of the string.

Parameters:

string

$str String to check

Returns:

bool Result

static Pluf_Text_Stemmer_Porter::cvc

(

$

str

)

[static, private]

Checks for ending CVC sequence where second C is not W, X or Y

Parameters:

string

$str String to check

Returns:

bool Result

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Member Data Documentation

Pluf_Text_Stemmer_Porter::$regex_consonant = '(?:[bcdfghjklmnpqrstvwxz]|(?<=[aeiou])y|^y)' [static, private]

Pluf_Text_Stemmer_Porter::$regex_vowel = '(?:[aeiou]|(?<![aeiou])y)' [static, private]

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The documentation for this class was generated from the following file:

• pluf/src/Pluf/Text/Stemmer/Porter.php