Description
string
metaphone ( string str [, int phones] )
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].
