Php/docs/function.soundex
soundex
(PHP 4, PHP 5, PHP 7)
soundex — Calculate the soundex key of a string
说明
soundex
( string $string
) : string
Calculates the soundex key of string.
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.
参数
string- The input string.
返回值
Returns the soundex key as a string.
更新日志
| 版本 | 说明 |
|---|---|
| 8.0.0 | Prior to this version, calling the function with an empty string returned false
for no particular reason. |
范例
Example #1 Soundex Examples
<?phpsoundex("Euler") == soundex("Ellery"); // E460soundex("Gauss") == soundex("Ghosh"); // G200soundex("Hilbert") == soundex("Heilbronn"); // H416soundex("Knuth") == soundex("Kant"); // K530soundex("Lloyd") == soundex("Ladd"); // L300soundex("Lukasiewicz") == soundex("Lissajous"); // L222?>
参见
- levenshtein() - 计算两个字符串之间的编辑距离
- metaphone() - Calculate the metaphone key of a string
- similar_text() - 计算两个字符串的相似度
