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<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision$ -->
<chapter xml:id="mysqli.setup" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
&reftitle.setup;
<!-- {{{ Requirements -->
<section xml:id="mysqli.requirements">
&reftitle.required;
<para>
In order to have these functions available, you must compile PHP with
support for the mysqli extension.
</para>
<para>
<emphasis role="bold">MySQL 8</emphasis>
</para>
<para>
When running a PHP version before 7.1.16, or PHP 7.2 before 7.2.4, set
MySQL 8 Server's default password plugin to <emphasis>mysql_native_password</emphasis>
or else you will see errors similar to
<emphasis>The server requested authentication method unknown to the client [caching_sha2_password]</emphasis>
even when <emphasis>caching_sha2_password</emphasis> is not used.
</para>
<para>
This is because MySQL 8 defaults to caching_sha2_password, a plugin that is
not recognized by the older PHP (mysqlnd) releases. Instead, change it by
setting <literal>default_authentication_plugin=mysql_native_password</literal>
in <filename>my.cnf</filename>. The <emphasis>caching_sha2_password</emphasis>
plugin is fully supported as of PHP 7.4.4. For older releases, the
<link linkend="book.mysql-xdevapi">mysql_xdevapi</link> extension does
support it.
</para>
</section>
<!-- }}} -->
<!-- {{{ Installation -->
&reference.mysqli.configure;
<!-- }}} -->
<!-- {{{ Configuration -->
&reference.mysqli.ini;
<!-- }}} -->
</chapter>
<!-- 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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