<?xml version="1.0" encoding="utf-8"?>
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<refentry xml:id="mysqlnduhconnection.changeuser" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
 <refnamediv>
  <refname>MysqlndUhConnection::changeUser</refname>
  <refpurpose>Changes the user of the specified mysqlnd database connection</refpurpose>
 </refnamediv>

 <refsect1 role="description">
  &reftitle.description;
  <methodsynopsis>
   <modifier>public</modifier> <type>bool</type><methodname>MysqlndUhConnection::changeUser</methodname>
   <methodparam><type>mysqlnd_connection</type><parameter>connection</parameter></methodparam>
   <methodparam><type>string</type><parameter>user</parameter></methodparam>
   <methodparam><type>string</type><parameter>password</parameter></methodparam>
   <methodparam><type>string</type><parameter>database</parameter></methodparam>
   <methodparam><type>bool</type><parameter>silent</parameter></methodparam>
   <methodparam><type>int</type><parameter>passwd_len</parameter></methodparam>
  </methodsynopsis>
  <para>
   Changes the user of the specified mysqlnd database connection
  </para>

 </refsect1>

 <refsect1 role="parameters">
  &reftitle.parameters;
  <variablelist>
   <varlistentry>
    <term><parameter>connection</parameter></term>
    <listitem>
     <para>
      Mysqlnd connection handle. Do not modify!
     </para>
    </listitem>
   </varlistentry>
   <varlistentry>
    <term><parameter>user</parameter></term>
    <listitem>
     <para>
      The MySQL user name.
     </para>
    </listitem>
   </varlistentry>
   <varlistentry>
    <term><parameter>password</parameter></term>
    <listitem>
     <para>
      The MySQL password.
     </para>
    </listitem>
   </varlistentry>
   <varlistentry>
    <term><parameter>database</parameter></term>
    <listitem>
     <para>
      The MySQL database to change to.
     </para>
    </listitem>
   </varlistentry>
   <varlistentry>
    <term><parameter>silent</parameter></term>
    <listitem>
     <para>
      Controls if mysqlnd is allowed to emit errors or not.
     </para>
    </listitem>
   </varlistentry>
   <varlistentry>
    <term><parameter>passwd_len</parameter></term>
    <listitem>
     <para>
      Length of the MySQL password.
     </para>
    </listitem>
   </varlistentry>
  </variablelist>
 </refsect1>

 <refsect1 role="returnvalues">
  &reftitle.returnvalues;
  <para>
   Returns &true; on success.
   Otherwise, returns &false;
  </para>
 </refsect1>

 <refsect1 role="examples">
  &reftitle.examples;
  <para>
   <example>
    <title><function>MysqlndUhConnection::changeUser</function> example</title>
        <programlisting role="php">
<![CDATA[
<?php
class proxy extends MysqlndUhConnection {
 /* Hook mysqlnd's connection::change_user call */
 public function changeUser($res, $user, $passwd, $db, $silent, $passwd_len) {
   printf("%s(%s)\n", __METHOD__, var_export(func_get_args(), true));
   $ret = parent::changeUser($res, $user, $passwd, $db, $silent, $passwd_len);
   printf("%s returns %s\n", __METHOD__, var_export($ret, true));
   return $ret;
 }
}
/* Install proxy/hooks to be used with all future mysqlnd connection */
mysqlnd_uh_set_connection_proxy(new proxy());

/* Create mysqli connection which is using the mysqlnd library */
$mysqli = new mysqli("localhost", "root", "", "test");

/* Example of a user API call which triggers the hooked mysqlnd call */
var_dump($mysqli->change_user("root", "bar", "test"));
?>
]]>
    </programlisting>
    &example.outputs;
    <screen>
<![CDATA[
proxy::changeUser(array (
  0 => NULL,
  1 => 'root',
  2 => 'bar',
  3 => 'test',
  4 => false,
  5 => 3,
))
proxy::changeUser returns false
bool(false)

]]>
    </screen>
   </example>
  </para>
 </refsect1>

 <refsect1 role="seealso">
  &reftitle.seealso;
  <para>
   <simplelist>
    <member>
     <function>mysqlnd_uh_set_connection_proxy</function>
    </member>
    <member>
     <function>mysqli_change_user</function>
    </member>
   </simplelist>
  </para>
 </refsect1>

</refentry>

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