<?xml version="1.0" encoding="utf-8"?>
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<refentry xml:id="function.mysql-thread-id" xmlns="http://docbook.org/ns/docbook">
 <refnamediv>
  <refname>mysql_thread_id</refname>
  <refpurpose>Return the current thread ID</refpurpose>
 </refnamediv>

 <refsynopsisdiv>
  <warning>
   &mysql.alternative.note;
   <simplelist role="alternatives">
    <member><function>mysqli_thread_id</function></member>
   </simplelist>
  </warning>
 </refsynopsisdiv>

 <refsect1 role="description">
  &reftitle.description;
  <methodsynopsis>
   <type>int</type><methodname>mysql_thread_id</methodname>
   <methodparam choice="opt"><type>resource</type><parameter>link_identifier</parameter><initializer>NULL</initializer></methodparam>
  </methodsynopsis>
  <para>
   Retrieves the current thread ID. If the connection is lost, and a reconnect 
   with <function>mysql_ping</function> is executed, the thread ID will 
   change. This means only retrieve the thread ID when needed.
  </para>
 </refsect1>

 <refsect1 role="parameters">
  &reftitle.parameters;
  <para>
   <variablelist>
    &mysql.linkid.description;
   </variablelist>
  </para>
 </refsect1>

 <refsect1 role="returnvalues">
  &reftitle.returnvalues;
  <para>
   The thread ID on success&return.falseforfailure;.
  </para>
 </refsect1>

 <refsect1 role="examples">
  &reftitle.examples;
  <para>
   <example>
    <title><function>mysql_thread_id</function> example</title>
    <programlisting role="php">
<![CDATA[
<?php
$link = mysql_connect('localhost', 'mysql_user', 'mysql_password');
$thread_id = mysql_thread_id($link);
if ($thread_id){
    printf("current thread id is %d\n", $thread_id);
}
?>
]]>
    </programlisting>
    &example.outputs.similar;
    <screen>
<![CDATA[
current thread id is 73
]]>
    </screen>
   </example>
  </para>
 </refsect1>

 <refsect1 role="seealso">
  &reftitle.seealso;
  <para>
   <simplelist>
    <member><function>mysql_ping</function></member>
    <member><function>mysql_list_processes</function></member>
   </simplelist>
  </para>
 </refsect1>
</refentry>

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