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>preg_quote</H1
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><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
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></A
><P
><B
>Exemplo 1. <B
CLASS="function"
>preg_quote()</B
> example</B
></P
><TABLE
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><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
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></DIV
></TD
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>
</P
><P
> <TABLE
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><DIV
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><A
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></A
><P
><B
>Exemplo 2. Italicizing a word within some text</B
></P
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><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
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></TD
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>
</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
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