similar_text
sprintf
String Funkcje
PHP Manual

# soundex

(PHP 4, PHP 5)

soundex — Calculate the soundex key of a string

### Opis

string soundex ( string `$str` )

Calculates the soundex key of `str` .

Soundex keys have the property that words pronounced similarly produce the same soundex key, and can thus be used to simplify searches in databases where you know the pronunciation but not the spelling. This soundex function returns a string 4 characters long, starting with a letter.

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.

### Parametry

`str`

  The input string.

### Zwracane wartości

Returns the soundex key as a string.

### Przykłady

Przykład #1 Soundex Examples

`<?php
soundex("Euler") == soundex("Ellery"); // E460
soundex("Gauss") == soundex("Ghosh"); // G200
soundex("Hilbert") == soundex("Heilbronn"); // H416
soundex("Knuth") == soundex("Kant"); // K530
soundex("Lloyd") == soundex("Ladd"); // L300
soundex("Lukasiewicz") == soundex("Lissajous"); // L222
?>`

### Zobacz też:

- levenshtein() - Calculate Levenshtein distance between two strings
- metaphone() - Calculate the metaphone key of a string
- similar_text() - Calculate the similarity between two strings

similar_text
sprintf
String Funkcje
PHP Manual