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<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision$ -->
<section xml:id="mbstring.installation" xmlns="http://docbook.org/ns/docbook">
&reftitle.install;
<para>
<literal>mbstring</literal> is a non-default extension. This means it
is not enabled by default. You must explicitly enable the module with
the <literal>configure</literal> option. See the
<link linkend="install">Install</link> section for details.
</para>
<simpara>
The following configure options are related to the
<literal>mbstring</literal> module.
</simpara>
<para>
<itemizedlist>
<listitem>
<para>
<option role="configure">--enable-mbstring</option>: Enable
<literal>mbstring</literal> functions. This option is
required to use <literal>mbstring</literal> functions.
</para>
<para>
<productname>libmbfl</productname> is necessary for <literal>mbstring</literal>.
<productname>libmbfl</productname> is bundled with <literal>mbstring</literal>.
Prior to PHP 7.3.0, if <productname>libmbfl</productname> is already installed on the system,
<option role="configure">--with-libmbfl[=DIR]</option> can be specified to use
the installed library.
</para>
</listitem>
<listitem>
<para>
<option role="configure">--disable-mbregex</option>: Disable
regular expression functions with multibyte character support.
</para>
<para>
<productname>Oniguruma</productname> is necessary for the regular
expression functions with multibyte character support.
As of PHP 7.4.0, pkg-config is used to detect the libonig library.
Prior to PHP 7.4.0, <productname>Oniguruma</productname> was bundled with
<literal>mbstring</literal>, but it was possible to build against an already
installed libonig by passing <option role="configure">--with-onig[=DIR]</option>.
</para>
<para>
It is possible to disable the multibyte regex backtrack
check by specifying <option
role="configure">--disable-mbregex-backtrack</option>.
</para>
</listitem>
</itemizedlist>
</para>
</section>
<!-- Keep this comment at the end of the file
Local variables:
mode: sgml
sgml-omittag:t
sgml-shorttag:t
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:"~/.phpdoc/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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