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<?xml version="1.0" encoding="iso-8859-1"?>
<!-- $Revision: 1.3 $ -->
<!-- Purpose: basic.text -->
<!-- Membership: core -->
<book xml:id="book.regex" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
<title>Regular Expression (POSIX Extended)</title>
<titleabbrev>POSIX Regex</titleabbrev>
<preface xml:id="intro.regex">
&reftitle.intro;
<tip>
<para>
PHP also supports regular expressions using a Perl-compatible syntax
using the <link linkend="book.pcre">PCRE functions</link>. Those functions
support non-greedy matching, assertions, conditional subpatterns, and a
number of other features not supported by the POSIX-extended regular
expression syntax.
</para>
</tip>
<warning>
<para>
These regular expression functions are not binary-safe. The <link
linkend="book.pcre">PCRE functions</link> are.
</para>
</warning>
<para>
Regular expressions are used for complex string manipulation.
PHP uses the POSIX extended regular expressions as defined by POSIX
1003.2. For a full description of POSIX regular expressions see the <link xlink:href="&url.regex.man;">regex
man pages</link> included in the regex directory in the PHP distribution. It's
in manpage format, so you'll want to do something along the lines of
<command>man /usr/local/src/regex/regex.7</command> in order to read it.
</para>
</preface>
&reference.regex.setup;
&reference.regex.constants;
&reference.regex.examples;
&reference.regex.reference;
</book>
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sgml-minimize-attributes:nil
sgml-always-quote-attributes:t
sgml-indent-step:1
sgml-indent-data:t
indent-tabs-mode:nil
sgml-parent-document:nil
sgml-default-dtd-file:"../../../manual.ced"
sgml-exposed-tags:nil
sgml-local-catalogs:nil
sgml-local-ecat-files:nil
End:
vim600: syn=xml fen fdm=syntax fdl=2 si
vim: et tw=78 syn=sgml
vi: ts=1 sw=1
-->
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