metaphone

metaphone

(PHP 4, PHP 5)

metaphoneCalculate the metaphone key of a string

说明

string metaphone ( string $str [, int $phonemes = 0 ] )

Calculates the metaphone key of str.

Similar to soundex() metaphone creates the same key for similar sounding words. It's more accurate than soundex() as it knows the basic rules of English pronunciation. The metaphone generated keys are of variable length.

Metaphone was developed by Lawrence Philips <lphilips at verity dot com>. It is described in ["Practical Algorithms for Programmers", Binstock & Rex, Addison Wesley, 1995].

参数

str

The input string.

phonemes

This parameter restricts the returned metaphone key to phonemes characters in length. The default value of 0 means no restriction.

返回值

Returns the metaphone key as a string, 或者在失败时返回 FALSE.

范例

Example #1 metaphone() basic example

<?php
var_dump
(metaphone('programming'));
var_dump(metaphone('programmer'));
?>

以上例程的输出类似于:

string(7) "PRKRMNK"
string(6) "PRKRMR"

Example #2 Using the phonemes parameter

<?php
var_dump
(metaphone('programming'5));
var_dump(metaphone('programmer'5));
?>

以上例程的输出类似于:

string(5) "PRKRM"
string(5) "PRKRM"


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