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><H1
><A
NAME="function.preg-replace"
></A
>preg_replace</H1
><DIV
CLASS="refnamediv"
><A
NAME="AEN100185"
></A
><P
>    (PHP 3&#62;= 3.0.9, PHP 4 , PHP 5)</P
>preg_replace&nbsp;--&nbsp;Perform a regular expression search and replace</DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN100188"
></A
><H2
>Description</H2
>mixed <B
CLASS="methodname"
>preg_replace</B
> ( mixed pattern, mixed replacement, mixed subject [, int limit])<BR
></BR
><P
>&#13;     Searches <VAR
CLASS="parameter"
>subject</VAR
> for matches to
     <VAR
CLASS="parameter"
>pattern</VAR
> and replaces them with
     <VAR
CLASS="parameter"
>replacement</VAR
>. If
     <VAR
CLASS="parameter"
>limit</VAR
> is specified, then only
     <VAR
CLASS="parameter"
>limit</VAR
> matches will be replaced; if
     <VAR
CLASS="parameter"
>limit</VAR
> is omitted or is -1, then all
     matches are replaced.
    </P
><P
>&#13;     <VAR
CLASS="parameter"
>Replacement</VAR
> may contain references of the form
     <VAR
CLASS="literal"
>\\<VAR
CLASS="replaceable"
>n</VAR
></VAR
> or (since PHP 4.0.4)
     <VAR
CLASS="literal"
><VAR
CLASS="replaceable"
>$n</VAR
></VAR
>, with the latter form
     being the preferred one. Every such reference will be replaced by the text
     captured by the <VAR
CLASS="replaceable"
>n</VAR
>'th parenthesized pattern.
     <VAR
CLASS="replaceable"
>n </VAR
>can be from 0 to 99, and
     <VAR
CLASS="literal"
>\\0</VAR
> or <VAR
CLASS="literal"
>$0</VAR
> refers to the text matched
     by the whole pattern. Opening parentheses are counted from left to right
     (starting from 1) to obtain the number of the capturing subpattern.
    </P
><P
>&#13;     When working with a replacement pattern where a backreference is immediately
     followed by another number (i.e.: placing a literal number immediately
     after a matched pattern), you cannot use the familiar <VAR
CLASS="literal"
>\\1</VAR
>
     notation for your backreference.  <VAR
CLASS="literal"
>\\11</VAR
>, for example,
     would confuse <B
CLASS="function"
>preg_replace()</B
> since it does not know whether
     you want the <VAR
CLASS="literal"
>\\1</VAR
> backreference followed by a literal <VAR
CLASS="literal"
>1</VAR
>, 
     or the <VAR
CLASS="literal"
>\\11</VAR
> backreference followed by nothing.  In this case
     the solution is to use <VAR
CLASS="literal"
>\${1}1</VAR
>.  This creates an
     isolated <VAR
CLASS="literal"
>$1</VAR
> backreference, leaving the <VAR
CLASS="literal"
>1</VAR
>
     as a literal.
    </P
><P
>&#13;     <TABLE
WIDTH="100%"
BORDER="0"
CELLPADDING="0"
CELLSPACING="0"
CLASS="EXAMPLE"
><TR
><TD
><DIV
CLASS="example"
><A
NAME="AEN100233"
></A
><P
><B
>Exemplu 1. Using backreferences followed by numeric literals</B
></P
><TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
CELLPADDING="5"
><TR
><TD
><code><font color="#000000">
<font color="#0000BB">&lt;?php<br />$string </font><font color="#007700">= </font><font color="#DD0000">"April 15, 2003"</font><font color="#007700">;<br /></font><font color="#0000BB">$pattern </font><font color="#007700">= </font><font color="#DD0000">"/(\w+) (\d+), (\d+)/i"</font><font color="#007700">;<br /></font><font color="#0000BB">$replacement </font><font color="#007700">= </font><font color="#DD0000">"\${1}1,\$3"</font><font color="#007700">;<br />echo </font><font color="#0000BB">preg_replace</font><font color="#007700">(</font><font color="#0000BB">$pattern</font><font color="#007700">, </font><font color="#0000BB">$replacement</font><font color="#007700">, </font><font color="#0000BB">$string</font><font color="#007700">);<br /></font><font color="#0000BB">?&gt;</font>
</font>
</code></TD
></TR
></TABLE
><P
>&#13;       This example will output :
      </P
><TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
CELLPADDING="5"
><TR
><TD
><PRE
CLASS="screen"
>April1,2003</PRE
></TD
></TR
></TABLE
></DIV
></TD
></TR
></TABLE
>
    </P
><P
>&#13;     If matches are found, the new <VAR
CLASS="parameter"
>subject</VAR
> will
     be returned, otherwise <VAR
CLASS="parameter"
>subject</VAR
> will be
     returned unchanged.
    </P
><P
>&#13;     Every parameter to <B
CLASS="function"
>preg_replace()</B
> (except
     <VAR
CLASS="parameter"
>limit</VAR
>) can be an unidimensional array.
     When using arrays with <VAR
CLASS="parameter"
>pattern</VAR
> and
     <VAR
CLASS="parameter"
>replacement</VAR
>, the keys are processed in the order
     they appear in the array.  This is <SPAN
CLASS="emphasis"
><I
CLASS="emphasis"
>not necessarily</I
></SPAN
>
     the same as the numerical index order.  If you use indexes to identify
     which <VAR
CLASS="parameter"
>pattern</VAR
> should be replaced by which
     <VAR
CLASS="parameter"
>replacement</VAR
>, you should perform a
     <A
HREF="function.ksort.html"
><B
CLASS="function"
>ksort()</B
></A
> on each array prior to calling
     <B
CLASS="function"
>preg_replace()</B
>.
    </P
><P
>&#13;     <TABLE
WIDTH="100%"
BORDER="0"
CELLPADDING="0"
CELLSPACING="0"
CLASS="EXAMPLE"
><TR
><TD
><DIV
CLASS="example"
><A
NAME="AEN100252"
></A
><P
><B
>Exemplu 2. Using indexed arrays with <B
CLASS="function"
>preg_replace()</B
></B
></P
><TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
CELLPADDING="5"
><TR
><TD
><code><font color="#000000">
<font color="#0000BB">&lt;?php<br />$string </font><font color="#007700">= </font><font color="#DD0000">"The quick brown fox jumped over the lazy dog."</font><font color="#007700">;<br /><br /></font><font color="#0000BB">$patterns</font><font color="#007700">[</font><font color="#0000BB">0</font><font color="#007700">] = </font><font color="#DD0000">"/quick/"</font><font color="#007700">;<br /></font><font color="#0000BB">$patterns</font><font color="#007700">[</font><font color="#0000BB">1</font><font color="#007700">] = </font><font color="#DD0000">"/brown/"</font><font color="#007700">;<br /></font><font color="#0000BB">$patterns</font><font color="#007700">[</font><font color="#0000BB">2</font><font color="#007700">] = </font><font color="#DD0000">"/fox/"</font><font color="#007700">;<br /><br /></font><font color="#0000BB">$replacements</font><font color="#007700">[</font><font color="#0000BB">2</font><font color="#007700">] = </font><font color="#DD0000">"bear"</font><font color="#007700">;<br /></font><font color="#0000BB">$replacements</font><font color="#007700">[</font><font color="#0000BB">1</font><font color="#007700">] = </font><font color="#DD0000">"black"</font><font color="#007700">;<br /></font><font color="#0000BB">$replacements</font><font color="#007700">[</font><font color="#0000BB">0</font><font color="#007700">] = </font><font color="#DD0000">"slow"</font><font color="#007700">;<br /><br />echo </font><font color="#0000BB">preg_replace</font><font color="#007700">(</font><font color="#0000BB">$patterns</font><font color="#007700">, </font><font color="#0000BB">$replacements</font><font color="#007700">, </font><font color="#0000BB">$string</font><font color="#007700">);<br /></font><font color="#0000BB">?&gt;</font>
</font>
</code></TD
></TR
></TABLE
><P
>&#13;       Output:
      </P
><TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
CELLPADDING="5"
><TR
><TD
><PRE
CLASS="screen"
>The bear black slow jumped over the lazy dog.</PRE
></TD
></TR
></TABLE
><P
>&#13;       By ksorting patterns and replacements, we should get what we wanted.
      </P
><TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
CELLPADDING="5"
><TR
><TD
><code><font color="#000000">
<font color="#0000BB">&lt;?php<br /><br />ksort</font><font color="#007700">(</font><font color="#0000BB">$patterns</font><font color="#007700">);<br /></font><font color="#0000BB">ksort</font><font color="#007700">(</font><font color="#0000BB">$replacements</font><font color="#007700">);<br /><br />echo </font><font color="#0000BB">preg_replace</font><font color="#007700">(</font><font color="#0000BB">$patterns</font><font color="#007700">, </font><font color="#0000BB">$replacements</font><font color="#007700">, </font><font color="#0000BB">$string</font><font color="#007700">);<br /><br /></font><font color="#0000BB">?&gt;</font>
</font>
</code></TD
></TR
></TABLE
><P
>&#13;       Output :
      </P
><TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
CELLPADDING="5"
><TR
><TD
><PRE
CLASS="screen"
>The slow black bear jumped over the lazy dog.</PRE
></TD
></TR
></TABLE
></DIV
></TD
></TR
></TABLE
>
    </P
><P
>&#13;     If <VAR
CLASS="parameter"
>subject</VAR
> is an array, then the search
     and replace is performed on every entry of
     <VAR
CLASS="parameter"
>subject</VAR
>, and the return value is an array
     as well.
    </P
><P
>&#13;     If <VAR
CLASS="parameter"
>pattern</VAR
> and <VAR
CLASS="parameter"
>replacement</VAR
>
     are arrays, then <B
CLASS="function"
>preg_replace()</B
> takes a value from
     each array and uses them to do search and replace on
     <VAR
CLASS="parameter"
>subject</VAR
>.  If <VAR
CLASS="parameter"
>replacement</VAR
>
     has fewer values than <VAR
CLASS="parameter"
>pattern</VAR
>, then empty string
     is used for the rest of replacement values.  If <VAR
CLASS="parameter"
>pattern
     </VAR
> is an array and <VAR
CLASS="parameter"
>replacement</VAR
> is a
     string, then this replacement string is used for every value of
     <VAR
CLASS="parameter"
>pattern</VAR
>.  The converse would not make sense,
     though.
    </P
><P
>&#13;     <VAR
CLASS="literal"
>/e</VAR
> modifier makes <B
CLASS="function"
>preg_replace()</B
>
     treat the <VAR
CLASS="parameter"
>replacement</VAR
> parameter as PHP code after
     the appropriate references substitution is done. Tip: make sure that
     <VAR
CLASS="parameter"
>replacement</VAR
> constitutes a valid PHP code string,
     otherwise PHP will complain about a parse error at the line containing
     <B
CLASS="function"
>preg_replace()</B
>.
    </P
><P
>&#13;     <TABLE
WIDTH="100%"
BORDER="0"
CELLPADDING="0"
CELLSPACING="0"
CLASS="EXAMPLE"
><TR
><TD
><DIV
CLASS="example"
><A
NAME="AEN100282"
></A
><P
><B
>Exemplu 3. Replacing several values</B
></P
><TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
CELLPADDING="5"
><TR
><TD
><code><font color="#000000">
<font color="#0000BB">&lt;?php<br />$patterns </font><font color="#007700">= array (</font><font color="#DD0000">"/(19|20)(\d{2})-(\d{1,2})-(\d{1,2})/"</font><font color="#007700">,<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#DD0000">"/^\s*{(\w+)}\s*=/"</font><font color="#007700">);<br /></font><font color="#0000BB">$replace </font><font color="#007700">= array (</font><font color="#DD0000">"\\3/\\4/\\1\\2"</font><font color="#007700">, </font><font color="#DD0000">"</font><font color="#007700">$\\</font><font color="#DD0000">1 ="</font><font color="#007700">);<br />echo </font><font color="#0000BB">preg_replace</font><font color="#007700">(</font><font color="#0000BB">$patterns</font><font color="#007700">, </font><font color="#0000BB">$replace</font><font color="#007700">, </font><font color="#DD0000">"{startDate} = 1999-5-27"</font><font color="#007700">);<br /></font><font color="#0000BB">?&gt;</font>
</font>
</code></TD
></TR
></TABLE
><P
>&#13;       This example will produce:
      </P
><TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
CELLPADDING="5"
><TR
><TD
><PRE
CLASS="screen"
>$startDate = 5/27/1999</PRE
></TD
></TR
></TABLE
></DIV
></TD
></TR
></TABLE
>
    </P
><P
>&#13;     <TABLE
WIDTH="100%"
BORDER="0"
CELLPADDING="0"
CELLSPACING="0"
CLASS="EXAMPLE"
><TR
><TD
><DIV
CLASS="example"
><A
NAME="AEN100288"
></A
><P
><B
>Exemplu 4. Using /e modifier</B
></P
><TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
CELLPADDING="5"
><TR
><TD
><code><font color="#000000">
<font color="#0000BB">&lt;?php<br />preg_replace</font><font color="#007700">(</font><font color="#DD0000">"/(&lt;\/?)(\w+)([^&gt;]*&gt;)/e"</font><font color="#007700">, <br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#DD0000">"'\\1'.strtoupper('\\2').'\\3'"</font><font color="#007700">, <br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#0000BB">$html_body</font><font color="#007700">);<br /></font><font color="#0000BB">?&gt;</font>
</font>
</code></TD
></TR
></TABLE
><P
>&#13;       This would capitalize all HTML tags in the input text.
      </P
></DIV
></TD
></TR
></TABLE
>
    </P
><P
>&#13;     <TABLE
WIDTH="100%"
BORDER="0"
CELLPADDING="0"
CELLSPACING="0"
CLASS="EXAMPLE"
><TR
><TD
><DIV
CLASS="example"
><A
NAME="AEN100293"
></A
><P
><B
>Exemplu 5. Convert HTML to text</B
></P
><TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
CELLPADDING="5"
><TR
><TD
><code><font color="#000000">
<font color="#0000BB">&lt;?php<br /></font><font color="#FF8000">// $document should contain an HTML document.<br />// This will remove HTML tags, javascript sections<br />// and white space. It will also convert some<br />// common HTML entities to their text equivalent.<br /><br /></font><font color="#0000BB">$search </font><font color="#007700">= array (</font><font color="#DD0000">"'&lt;script[^&gt;]*?&gt;.*?&lt;/script&gt;'si"</font><font color="#007700">,&nbsp;&nbsp;</font><font color="#FF8000">// Strip out javascript<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#DD0000">"'&lt;[\/\!]*?[^&lt;&gt;]*?&gt;'si"</font><font color="#007700">,&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#FF8000">// Strip out HTML tags<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#DD0000">"'([\r\n])[\s]+'"</font><font color="#007700">,&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#FF8000">// Strip out white space<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#DD0000">"'&amp;(quot|#34);'i"</font><font color="#007700">,&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#FF8000">// Replace HTML entities<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#DD0000">"'&amp;(amp|#38);'i"</font><font color="#007700">,<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#DD0000">"'&amp;(lt|#60);'i"</font><font color="#007700">,<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#DD0000">"'&amp;(gt|#62);'i"</font><font color="#007700">,<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#DD0000">"'&amp;(nbsp|#160);'i"</font><font color="#007700">,<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#DD0000">"'&amp;(iexcl|#161);'i"</font><font color="#007700">,<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#DD0000">"'&amp;(cent|#162);'i"</font><font color="#007700">,<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#DD0000">"'&amp;(pound|#163);'i"</font><font color="#007700">,<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#DD0000">"'&amp;(copy|#169);'i"</font><font color="#007700">,<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#DD0000">"'&amp;#(\d+);'e"</font><font color="#007700">);&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#FF8000">// evaluate as php<br /><br /></font><font color="#0000BB">$replace </font><font color="#007700">= array (</font><font color="#DD0000">""</font><font color="#007700">,<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#DD0000">""</font><font color="#007700">,<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#DD0000">"\\1"</font><font color="#007700">,<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#DD0000">"\""</font><font color="#007700">,<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#DD0000">"&amp;"</font><font color="#007700">,<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#DD0000">"&lt;"</font><font color="#007700">,<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#DD0000">"&gt;"</font><font color="#007700">,<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#DD0000">" "</font><font color="#007700">,<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#0000BB">chr</font><font color="#007700">(</font><font color="#0000BB">161</font><font color="#007700">),<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#0000BB">chr</font><font color="#007700">(</font><font color="#0000BB">162</font><font color="#007700">),<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#0000BB">chr</font><font color="#007700">(</font><font color="#0000BB">163</font><font color="#007700">),<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#0000BB">chr</font><font color="#007700">(</font><font color="#0000BB">169</font><font color="#007700">),<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#DD0000">"chr(\\1)"</font><font color="#007700">);<br /><br /></font><font color="#0000BB">$text </font><font color="#007700">= </font><font color="#0000BB">preg_replace</font><font color="#007700">(</font><font color="#0000BB">$search</font><font color="#007700">, </font><font color="#0000BB">$replace</font><font color="#007700">, </font><font color="#0000BB">$document</font><font color="#007700">);<br /></font><font color="#0000BB">?&gt;</font>
</font>
</code></TD
></TR
></TABLE
></DIV
></TD
></TR
></TABLE
>
    </P
><DIV
CLASS="note"
><BLOCKQUOTE
CLASS="note"
><P
><B
>Not&#227;: </B
>
      Parameter <VAR
CLASS="parameter"
>limit</VAR
> was added after PHP 4.0.1pl2.
     </P
></BLOCKQUOTE
></DIV
><P
>&#13;     See also <A
HREF="function.preg-match.html"
><B
CLASS="function"
>preg_match()</B
></A
>,
     <A
HREF="function.preg-match-all.html"
><B
CLASS="function"
>preg_match_all()</B
></A
>, and
     <A
HREF="function.preg-split.html"
><B
CLASS="function"
>preg_split()</B
></A
>.
    </P
></DIV
><DIV
CLASS="NAVFOOTER"
><HR
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