Calculate the metaphone key of a string

# metaphone

(PHP 4, PHP 5, PHP 7)

metaphone — Calculate the metaphone key of a string

### Descrierea

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

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].

### Parametri

`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.

### Valorile întoarse

Returns the metaphone key as a string, sau `FALSE` în cazul eșecului.

### Exemple

Example #1 metaphone() basic example

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

Exemplul de mai sus va afișa ceva similar cu:

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

Example #2 Using the `phonemes` parameter

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

Exemplul de mai sus va afișa ceva similar cu:

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