<!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="Manual do PHP" HREF="index.html"><LINK REL="UP" TITLE="String" 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" >Manual do PHP</TH ></TR ><TR ><TD WIDTH="10%" ALIGN="left" VALIGN="bottom" ><A HREF="function.similar-text.html" ACCESSKEY="P" >Anterior</A ></TD ><TD WIDTH="80%" ALIGN="center" VALIGN="bottom" ></TD ><TD WIDTH="10%" ALIGN="right" VALIGN="bottom" ><A HREF="function.sprintf.html" ACCESSKEY="N" >Próxima</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><H1 ><A NAME="function.soundex" ></A >soundex</H1 ><DIV CLASS="refnamediv" ><A NAME="AEN220519" ></A ><P > (PHP 3, PHP 4, PHP 5)</P >soundex -- Calcula a chave soundex de uma string</DIV ><DIV CLASS="refsect1" ><A NAME="AEN220522" ></A ><H2 >Descrição</H2 >string <B CLASS="methodname" >soundex</B > ( string str )<BR ></BR ><P > Calcula a chave soundex de <CODE CLASS="parameter" >str</CODE >. </P ><P > Chaves soundex tem a propriedade que palavras pronunciadas similarmente produzem a mesma chave soundex, e assim podem ser usadas em pesquisas em bancos de dados aonde você conhece a pronuncia mas não exatamente como se escreve. Esta função soundex retorna uma string de 4 caracteres, começando com uma letra. </P ><P > Esta função soundex em particular é a descrita por Donald Knuth em "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="AEN220535" ></A ><P ><B >Exemplo 1. Exemplos Soundex</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="#DD0000">'E460'</font><font color="#007700">;<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="#DD0000">'G200'</font><font color="#007700">;<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="#DD0000">'H416'</font><font color="#007700">;<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="#DD0000">'K530'</font><font color="#007700">;<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="#DD0000">'L300'</font><font color="#007700">;<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="#DD0000">'L222'</font><font color="#007700">;<br /></font><font color="#0000BB">?></font> </font> </code></TD ></TR ></TABLE ></DIV ></TD ></TR ></TABLE > </P ><P > Veja também <A HREF="function.levenshtein.html" ><B CLASS="function" >levenshtein()</B ></A >, <A HREF="function.metaphone.html" ><B CLASS="function" >metaphone()</B ></A > e <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" >Anterior</A ></TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="index.html" ACCESSKEY="H" >Principal</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" ><A HREF="function.sprintf.html" ACCESSKEY="N" >Próxima</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" >Acima</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >sprintf</TD ></TR ></TABLE ></DIV ></BODY ></HTML >