<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<HTML
><HEAD
><TITLE
>soundex</TITLE
><META
NAME="GENERATOR"
CONTENT="Modular DocBook HTML Stylesheet Version 1.79"><LINK
REL="HOME"
TITLE="PHP 手册"
HREF="index.html"><LINK
REL="UP"
TITLE="String 字符串处理函数"
HREF="ref.strings.html"><LINK
REL="PREVIOUS"
TITLE="similar_text"
HREF="function.similar-text.html"><LINK
REL="NEXT"
TITLE="sprintf"
HREF="function.sprintf.html"><META
HTTP-EQUIV="Content-type"
CONTENT="text/html; charset=UTF-8"></HEAD
><BODY
CLASS="refentry"
BGCOLOR="#FFFFFF"
TEXT="#000000"
LINK="#0000FF"
VLINK="#840084"
ALINK="#0000FF"
><DIV
CLASS="NAVHEADER"
><TABLE
SUMMARY="Header navigation table"
WIDTH="100%"
BORDER="0"
CELLPADDING="0"
CELLSPACING="0"
><TR
><TH
COLSPAN="3"
ALIGN="center"
>PHP 手册</TH
></TR
><TR
><TD
WIDTH="10%"
ALIGN="left"
VALIGN="bottom"
><A
HREF="function.similar-text.html"
ACCESSKEY="P"
>上一页</A
></TD
><TD
WIDTH="80%"
ALIGN="center"
VALIGN="bottom"
></TD
><TD
WIDTH="10%"
ALIGN="right"
VALIGN="bottom"
><A
HREF="function.sprintf.html"
ACCESSKEY="N"
>下一页</A
></TD
></TR
></TABLE
><HR
ALIGN="LEFT"
WIDTH="100%"></DIV
><H1
><A
NAME="function.soundex"
></A
>soundex</H1
><DIV
CLASS="refnamediv"
><A
NAME="AEN226811"
></A
><P
> (PHP 3, PHP 4, PHP 5)</P
>soundex -- Calculate the soundex key of a string</DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN226814"
></A
><H2
>Description</H2
>string <B
CLASS="methodname"
>soundex</B
> ( string str )<BR
></BR
><P
> Calculates the soundex key of <CODE
CLASS="parameter"
>str</CODE
>.
</P
><P
> 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.
</P
><P
> 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.
</P
><P
> <TABLE
WIDTH="100%"
BORDER="0"
CELLPADDING="0"
CELLSPACING="0"
CLASS="EXAMPLE"
><TR
><TD
><DIV
CLASS="example"
><A
NAME="AEN226827"
></A
><P
><B
>例 1. Soundex Examples</B
></P
><TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
CELLPADDING="5"
><TR
><TD
><code><font color="#000000">
<font color="#0000BB"><?php<br />soundex</font><font color="#007700">(</font><font color="#DD0000">"Euler"</font><font color="#007700">) == </font><font color="#0000BB">soundex</font><font color="#007700">(</font><font color="#DD0000">"Ellery"</font><font color="#007700">); </font><font color="#FF8000">// E460<br /></font><font color="#0000BB">soundex</font><font color="#007700">(</font><font color="#DD0000">"Gauss"</font><font color="#007700">) == </font><font color="#0000BB">soundex</font><font color="#007700">(</font><font color="#DD0000">"Ghosh"</font><font color="#007700">); </font><font color="#FF8000">// G200<br /></font><font color="#0000BB">soundex</font><font color="#007700">(</font><font color="#DD0000">"Hilbert"</font><font color="#007700">) == </font><font color="#0000BB">soundex</font><font color="#007700">(</font><font color="#DD0000">"Heilbronn"</font><font color="#007700">); </font><font color="#FF8000">// H416<br /></font><font color="#0000BB">soundex</font><font color="#007700">(</font><font color="#DD0000">"Knuth"</font><font color="#007700">) == </font><font color="#0000BB">soundex</font><font color="#007700">(</font><font color="#DD0000">"Kant"</font><font color="#007700">); </font><font color="#FF8000">// K530<br /></font><font color="#0000BB">soundex</font><font color="#007700">(</font><font color="#DD0000">"Lloyd"</font><font color="#007700">) == </font><font color="#0000BB">soundex</font><font color="#007700">(</font><font color="#DD0000">"Ladd"</font><font color="#007700">); </font><font color="#FF8000">// L300<br /></font><font color="#0000BB">soundex</font><font color="#007700">(</font><font color="#DD0000">"Lukasiewicz"</font><font color="#007700">) == </font><font color="#0000BB">soundex</font><font color="#007700">(</font><font color="#DD0000">"Lissajous"</font><font color="#007700">); </font><font color="#FF8000">// L222<br /></font><font color="#0000BB">?></font>
</font>
</code></TD
></TR
></TABLE
></DIV
></TD
></TR
></TABLE
>
</P
><P
> See also
<A
HREF="function.levenshtein.html"
><B
CLASS="function"
>levenshtein()</B
></A
>,
<A
HREF="function.metaphone.html"
><B
CLASS="function"
>metaphone()</B
></A
>, and
<A
HREF="function.similar-text.html"
><B
CLASS="function"
>similar_text()</B
></A
>.
</P
></DIV
><DIV
CLASS="NAVFOOTER"
><HR
ALIGN="LEFT"
WIDTH="100%"><TABLE
SUMMARY="Footer navigation table"
WIDTH="100%"
BORDER="0"
CELLPADDING="0"
CELLSPACING="0"
><TR
><TD
WIDTH="33%"
ALIGN="left"
VALIGN="top"
><A
HREF="function.similar-text.html"
ACCESSKEY="P"
>上一页</A
></TD
><TD
WIDTH="34%"
ALIGN="center"
VALIGN="top"
><A
HREF="index.html"
ACCESSKEY="H"
>起始页</A
></TD
><TD
WIDTH="33%"
ALIGN="right"
VALIGN="top"
><A
HREF="function.sprintf.html"
ACCESSKEY="N"
>下一页</A
></TD
></TR
><TR
><TD
WIDTH="33%"
ALIGN="left"
VALIGN="top"
>similar_text</TD
><TD
WIDTH="34%"
ALIGN="center"
VALIGN="top"
><A
HREF="ref.strings.html"
ACCESSKEY="U"
>上一级</A
></TD
><TD
WIDTH="33%"
ALIGN="right"
VALIGN="top"
>sprintf</TD
></TR
></TABLE
></DIV
></BODY
></HTML
>
