PHP soundex() Function

The soundex() function calculates the soundex key of a string.A soundex key is a four character long alphanumeric string that represent English pronunciation of a word.The soundex() function can be used for spelling applications.

string soundex ( string $str )

Calculates the soundex key of str.

This particular soundex function is one described by Donald Knuth in "The Art Of Computer Programming, vol. 3: Sorting And Searching", Addison-Wesley (1973), pp. 391-392.

Example -

ParameterDescription
strThe input string.

Returns the soundex key as a string.