<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <HTML ><HEAD ><TITLE >array_flip</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="Arrays" HREF="ref.array.html"><LINK REL="PREVIOUS" TITLE="array_filter" HREF="function.array-filter.html"><LINK REL="NEXT" TITLE="array_intersect_assoc" HREF="function.array-intersect-assoc.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.array-filter.html" ACCESSKEY="P" >Anterior</A ></TD ><TD WIDTH="80%" ALIGN="center" VALIGN="bottom" ></TD ><TD WIDTH="10%" ALIGN="right" VALIGN="bottom" ><A HREF="function.array-intersect-assoc.html" ACCESSKEY="N" >Próxima</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><H1 ><A NAME="function.array-flip" ></A >array_flip</H1 ><DIV CLASS="refnamediv" ><A NAME="AEN10641" ></A ><P > (PHP 4, PHP 5)</P >array_flip -- Inverte as relações entre chaves e valores</DIV ><DIV CLASS="refsect1" ><A NAME="AEN10644" ></A ><H2 >Descrições</H2 >array <B CLASS="methodname" >array_flip</B > ( array trans )<BR ></BR ><P > <B CLASS="function" >array_flip()</B > retorna um <A HREF="language.types.array.html" ><B CLASS="type" >array</B ></A > com com a relação entre suas chaves e valores invertida, ou seja, as chaves de <CODE CLASS="parameter" >trans</CODE > passam a ser os valores e os valores de <CODE CLASS="parameter" >trans</CODE > passam a ser as chaves. </P ><P > Note que os valores de <CODE CLASS="parameter" >trans</CODE > devem ser chaves válidas, ou seja, eles precisam ser inteiros não negativos ou <A HREF="language.types.string.html" ><B CLASS="type" >string</B ></A >. Um aviso será mostrado se um valor é de um tipo inválido para chaves, e o par chave/valor em questão <SPAN CLASS="emphasis" ><I CLASS="emphasis" >não será invertido</I ></SPAN >. </P ><P > Se um valor tem várias ocorrências, a última chave será usada como valor, e todos os outros serão perdidos. </P ><P > <B CLASS="function" >array_flip()</B > retorna <TT CLASS="constant" ><B >FALSE</B ></TT > se falhar. </P ><P > <TABLE WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" CLASS="EXAMPLE" ><TR ><TD ><DIV CLASS="example" ><A NAME="AEN10667" ></A ><P ><B >Exemplo 1. Exemplo de <B CLASS="function" >array_flip()</B ></B ></P ><TABLE BORDER="0" BGCOLOR="#E0E0E0" CELLPADDING="5" ><TR ><TD ><code><font color="#000000"> <font color="#0000BB"><?php<br />$trans </font><font color="#007700">= </font><font color="#0000BB">array_flip</font><font color="#007700">(</font><font color="#0000BB">$trans</font><font color="#007700">);<br /></font><font color="#0000BB">$original </font><font color="#007700">= </font><font color="#0000BB">strtr</font><font color="#007700">(</font><font color="#0000BB">$str</font><font color="#007700">, </font><font color="#0000BB">$trans</font><font color="#007700">);<br /></font><font color="#0000BB">?></font> </font> </code></TD ></TR ></TABLE ></DIV ></TD ></TR ></TABLE > </P ><P > <TABLE WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" CLASS="EXAMPLE" ><TR ><TD ><DIV CLASS="example" ><A NAME="AEN10672" ></A ><P ><B >Exemplo 2. Exemplo de <B CLASS="function" >array_flip()</B > : colisão</B ></P ><TABLE BORDER="0" BGCOLOR="#E0E0E0" CELLPADDING="5" ><TR ><TD ><code><font color="#000000"> <font color="#0000BB"><?php<br />$trans </font><font color="#007700">= array(</font><font color="#DD0000">"a" </font><font color="#007700">=> </font><font color="#0000BB">1</font><font color="#007700">, </font><font color="#DD0000">"b" </font><font color="#007700">=> </font><font color="#0000BB">1</font><font color="#007700">, </font><font color="#DD0000">"c" </font><font color="#007700">=> </font><font color="#0000BB">2</font><font color="#007700">);<br /></font><font color="#0000BB">$trans </font><font color="#007700">= </font><font color="#0000BB">array_flip</font><font color="#007700">(</font><font color="#0000BB">$trans</font><font color="#007700">);<br /></font><font color="#0000BB">print_r</font><font color="#007700">(</font><font color="#0000BB">$trans</font><font color="#007700">);<br /></font><font color="#0000BB">?></font> </font> </code></TD ></TR ></TABLE ><P > Agora <CODE CLASS="varname" >$trans</CODE > é: </P ><TABLE BORDER="0" BGCOLOR="#E0E0E0" CELLPADDING="5" ><TR ><TD ><PRE CLASS="screen" >Array ( [1] => b [2] => c )</PRE ></TD ></TR ></TABLE ></DIV ></TD ></TR ></TABLE > </P ><P > Veja também <A HREF="function.array-values.html" ><B CLASS="function" >array_values()</B ></A >, <A HREF="function.array-keys.html" ><B CLASS="function" >array_keys()</B ></A > e <A HREF="function.array-reverse.html" ><B CLASS="function" >array_reverse()</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.array-filter.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.array-intersect-assoc.html" ACCESSKEY="N" >Próxima</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >array_filter</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="ref.array.html" ACCESSKEY="U" >Acima</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >array_intersect_assoc</TD ></TR ></TABLE ></DIV ></BODY ></HTML >