<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <HTML ><HEAD ><TITLE >array_slice</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_shift" HREF="function.array-shift.html"><LINK REL="NEXT" TITLE="array_splice" HREF="function.array-splice.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-shift.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-splice.html" ACCESSKEY="N" >Próxima</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><H1 ><A NAME="function.array-slice" ></A >array_slice</H1 ><DIV CLASS="refnamediv" ><A NAME="AEN11559" ></A ><P > (PHP 4, PHP 5)</P >array_slice -- Extrai uma parcela de um array</DIV ><DIV CLASS="refsect1" ><A NAME="AEN11562" ></A ><H2 >Descrição</H2 >array <B CLASS="methodname" >array_slice</B > ( array array, int offset [, int length [, bool preserve_keys]] )<BR ></BR ><P > <B CLASS="function" >array_slice()</B > retorna a sequência de elementos de <CODE CLASS="parameter" >array</CODE > especificada pelos parâmetros <CODE CLASS="parameter" >offset</CODE > e <CODE CLASS="parameter" >length</CODE >. </P ><P > Se <CODE CLASS="parameter" >offset</CODE > for não negativo, a sequência começará do início de <CODE CLASS="parameter" >array</CODE >. Se <CODE CLASS="parameter" >offset</CODE > for negativo, a sequência começará dessa distância do final de <CODE CLASS="parameter" >array</CODE >. </P ><P > Se <CODE CLASS="parameter" >length</CODE > for especificado e positivo, então a sequência terá essa quantidade de elementos. Se <CODE CLASS="parameter" >length</CODE > for especificado e negativo então a sequência pará dessa quantidade elementos a partir do final do array. Se for omitido, então a sequência terá todos os elementos a partir de <CODE CLASS="parameter" >offset</CODE > até o final de <CODE CLASS="parameter" >array</CODE >. </P ><P > Note que <B CLASS="function" >array_slice()</B > irá reiniciar as chaves numericas pr padrão. Desde o PHP 5.0.2, você pode mudar esse funcionamento definindo <CODE CLASS="parameter" >preserve_keys</CODE > como <TT CLASS="constant" ><B >TRUE</B ></TT >. </P ><P > <TABLE WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" CLASS="EXAMPLE" ><TR ><TD ><DIV CLASS="example" ><A NAME="AEN11599" ></A ><P ><B >Exemplo 1. Exemplos de <B CLASS="function" >array_slice()</B ></B ></P ><TABLE BORDER="0" BGCOLOR="#E0E0E0" CELLPADDING="5" ><TR ><TD ><code><font color="#000000"> <font color="#0000BB"><?php<br />$input </font><font color="#007700">= array(</font><font color="#DD0000">"a"</font><font color="#007700">, </font><font color="#DD0000">"b"</font><font color="#007700">, </font><font color="#DD0000">"c"</font><font color="#007700">, </font><font color="#DD0000">"d"</font><font color="#007700">, </font><font color="#DD0000">"e"</font><font color="#007700">);<br /><br /></font><font color="#0000BB">$output </font><font color="#007700">= </font><font color="#0000BB">array_slice</font><font color="#007700">(</font><font color="#0000BB">$input</font><font color="#007700">, </font><font color="#0000BB">2</font><font color="#007700">); </font><font color="#FF8000">// retorna "c", "d", e "e"<br /></font><font color="#0000BB">$output </font><font color="#007700">= </font><font color="#0000BB">array_slice</font><font color="#007700">(</font><font color="#0000BB">$input</font><font color="#007700">, </font><font color="#0000BB">2</font><font color="#007700">, -</font><font color="#0000BB">1</font><font color="#007700">); </font><font color="#FF8000">// retorna "c", "d"<br /></font><font color="#0000BB">$output </font><font color="#007700">= </font><font color="#0000BB">array_slice</font><font color="#007700">(</font><font color="#0000BB">$input</font><font color="#007700">, -</font><font color="#0000BB">2</font><font color="#007700">, </font><font color="#0000BB">1</font><font color="#007700">); </font><font color="#FF8000">// retorna "d"<br /></font><font color="#0000BB">$output </font><font color="#007700">= </font><font color="#0000BB">array_slice</font><font color="#007700">(</font><font color="#0000BB">$input</font><font color="#007700">, </font><font color="#0000BB">0</font><font color="#007700">, </font><font color="#0000BB">3</font><font color="#007700">); </font><font color="#FF8000">// retorna "a", "b", e "c"<br />// Npote as diferenças nas chaves das arrays<br /></font><font color="#0000BB">print_r</font><font color="#007700">(</font><font color="#0000BB">array_slice</font><font color="#007700">(</font><font color="#0000BB">$input</font><font color="#007700">, </font><font color="#0000BB">2</font><font color="#007700">, -</font><font color="#0000BB">1</font><font color="#007700">));<br /></font><font color="#0000BB">print_r</font><font color="#007700">(</font><font color="#0000BB">array_slice</font><font color="#007700">(</font><font color="#0000BB">$input</font><font color="#007700">, </font><font color="#0000BB">2</font><font color="#007700">, -</font><font color="#0000BB">1</font><font color="#007700">, </font><font color="#0000BB">true</font><font color="#007700">));<br /></font><font color="#0000BB">?></font> </font> </code></TD ></TR ></TABLE ><P >O exemplo acima irá imprimir:</P ><TABLE BORDER="0" BGCOLOR="#E0E0E0" CELLPADDING="5" ><TR ><TD ><PRE CLASS="screen" >Array ( [0] => c [1] => d ) Array ( [2] => c [3] => d }</PRE ></TD ></TR ></TABLE ></DIV ></TD ></TR ></TABLE > </P ><P > Veja também <A HREF="function.array-splice.html" ><B CLASS="function" >array_splice()</B ></A > e <A HREF="function.unset.html" ><B CLASS="function" >unset()</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-shift.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-splice.html" ACCESSKEY="N" >Próxima</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >array_shift</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_splice</TD ></TR ></TABLE ></DIV ></BODY ></HTML >