R3m/framework Function reference string.metaphone

{string.metaphone(String $string, int $max_phonemes = 0)}

Calculate the metaphone key of a string.

Similar to PHP's soundex(), {string.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 .
It is described in "Practical Algorithms for Programmers", Binstock & Rex, Addison Wesley, 1995.


This parameter restricts the returned metaphone key to max_phonemes characters in length.  
However, the resulting phonemes are always transcribed completely, so the resulting string length may be slightly longer than max_phonemes.  
The default value of 0 means no restriction.

Returns the metaphone key as a string.

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Last modified: 2021-06-07

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