<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <HTML ><HEAD ><TITLE >preg_quote</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="Regular Expression Functions (Perl-Compatible)" HREF="ref.pcre.html"><LINK REL="PREVIOUS" TITLE="preg_match" HREF="function.preg-match.html"><LINK REL="NEXT" TITLE="preg_replace_callback" HREF="function.preg-replace-callback.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.preg-match.html" ACCESSKEY="P" >Anterior</A ></TD ><TD WIDTH="80%" ALIGN="center" VALIGN="bottom" ></TD ><TD WIDTH="10%" ALIGN="right" VALIGN="bottom" ><A HREF="function.preg-replace-callback.html" ACCESSKEY="N" >Próxima</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><H1 ><A NAME="function.preg-quote" ></A >preg_quote</H1 ><DIV CLASS="refnamediv" ><A NAME="AEN167135" ></A ><P > (PHP 3 >= 3.0.9, PHP 4, PHP 5)</P >preg_quote -- Quote regular expression characters</DIV ><DIV CLASS="refsect1" ><A NAME="AEN167138" ></A ><H2 >Descrição</H2 >string <B CLASS="methodname" >preg_quote</B > ( string str [, string delimiter] )<BR ></BR ><P > <B CLASS="function" >preg_quote()</B > takes <CODE CLASS="parameter" >str</CODE > and puts a backslash in front of every character that is part of the regular expression syntax. This is useful if you have a run-time string that you need to match in some text and the string may contain special regex characters. </P ><P > The special regular expression characters are: <TT CLASS="literal" >. \ + * ? [ ^ ] $ ( ) { } = ! < > | :</TT > </P ></DIV ><DIV CLASS="refsect1" ><A NAME="AEN167154" ></A ><H2 >Parâmetros</H2 ><P > <P ></P ><DIV CLASS="variablelist" ><DL ><DT ><CODE CLASS="parameter" >str</CODE ></DT ><DD ><P > The input string. </P ></DD ><DT ><CODE CLASS="parameter" >delimiter</CODE ></DT ><DD ><P > If the optional <CODE CLASS="parameter" >delimiter</CODE > is specified, it will also be escaped. This is useful for escaping the delimiter that is required by the PCRE functions. The / is the most commonly used delimiter. </P ></DD ></DL ></DIV > </P ></DIV ><DIV CLASS="refsect1" ><A NAME="AEN167169" ></A ><H2 >Valores de retornado</H2 ><P > Returns the quoted string. </P ></DIV ><DIV CLASS="refsect1" ><A NAME="AEN167172" ></A ><H2 >Exemplos</H2 ><P > <TABLE WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" CLASS="EXAMPLE" ><TR ><TD ><DIV CLASS="example" ><A NAME="AEN167175" ></A ><P ><B >Exemplo 1. <B CLASS="function" >preg_quote()</B > example</B ></P ><TABLE BORDER="0" BGCOLOR="#E0E0E0" CELLPADDING="5" ><TR ><TD ><code><font color="#000000"> <font color="#0000BB"><?php<br />$keywords </font><font color="#007700">= </font><font color="#DD0000">'$40 for a g3/400'</font><font color="#007700">;<br /></font><font color="#0000BB">$keywords </font><font color="#007700">= </font><font color="#0000BB">preg_quote</font><font color="#007700">(</font><font color="#0000BB">$keywords</font><font color="#007700">, </font><font color="#DD0000">'/'</font><font color="#007700">);<br />echo </font><font color="#0000BB">$keywords</font><font color="#007700">; </font><font color="#FF8000">// returns \$40 for a g3\/400<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="AEN167180" ></A ><P ><B >Exemplo 2. Italicizing a word within some text</B ></P ><TABLE BORDER="0" BGCOLOR="#E0E0E0" CELLPADDING="5" ><TR ><TD ><code><font color="#000000"> <font color="#0000BB"><?php<br /></font><font color="#FF8000">// In this example, preg_quote($word) is used to keep the<br />// asterisks from having special meaning to the regular<br />// expression.<br /><br /></font><font color="#0000BB">$textbody </font><font color="#007700">= </font><font color="#DD0000">"This book is *very* difficult to find."</font><font color="#007700">;<br /></font><font color="#0000BB">$word </font><font color="#007700">= </font><font color="#DD0000">"*very*"</font><font color="#007700">;<br /></font><font color="#0000BB">$textbody </font><font color="#007700">= </font><font color="#0000BB">preg_replace </font><font color="#007700">(</font><font color="#DD0000">"/" </font><font color="#007700">. </font><font color="#0000BB">preg_quote</font><font color="#007700">(</font><font color="#0000BB">$word</font><font color="#007700">) . </font><font color="#DD0000">"/"</font><font color="#007700">,<br /> </font><font color="#DD0000">"<i>" </font><font color="#007700">. </font><font color="#0000BB">$word </font><font color="#007700">. </font><font color="#DD0000">"</i>"</font><font color="#007700">,<br /> </font><font color="#0000BB">$textbody</font><font color="#007700">);<br /></font><font color="#0000BB">?></font> </font> </code></TD ></TR ></TABLE ></DIV ></TD ></TR ></TABLE > </P ></DIV ><DIV CLASS="refsect1" ><A NAME="AEN167183" ></A ><H2 >Notas</H2 ><DIV CLASS="note" ><BLOCKQUOTE CLASS="note" ><P ><B >Nota: </B >Esta função é compatível com dados binários</P ></BLOCKQUOTE ></DIV ></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.preg-match.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.preg-replace-callback.html" ACCESSKEY="N" >Próxima</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >preg_match</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="ref.pcre.html" ACCESSKEY="U" >Acima</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >preg_replace_callback</TD ></TR ></TABLE ></DIV ></BODY ></HTML >