Source of: /manual/en/function.mysql-thread-id.php
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<div id="function.mysql-thread-id" class="refentry">
<div class="refnamediv">
<h1 class="refname">mysql_thread_id</h1>
<p class="verinfo">(PHP 4 >= 4.3.0, PHP 5)</p><p class="refpurpose"><span class="refname">mysql_thread_id</span> — <span class="dc-title">Return the current thread ID</span></p>
</div>
<a name="function.mysql-thread-id.description"></a><div class="refsect1 description">
<h3 class="title">Description</h3>
<div class="methodsynopsis dc-description">
<span class="type">int</span> <span class="methodname"><b>mysql_thread_id</b></span>
([ <span class="methodparam"><span class="type">resource</span> <tt class="parameter">$link_identifier</tt></span>
] )</div>
<p class="para rdfs-comment">
Retrieves the current thread ID. If the connection is lost, and a reconnect
with <a href="function.mysql-ping.php" class="function">mysql_ping()</a> is executed, the thread ID will
change. This means only retrieve the thread ID when needed.
</p>
</div>
<a name="function.mysql-thread-id.parameters"></a><div class="refsect1 parameters">
<h3 class="title">Parameters</h3>
<p class="para">
</p><dl>
<dt class="varlistentry">
<span class="term"><i><tt class="parameter">
link_identifier</tt></i>
</span>
</dt><dd class="listitem">
<p class="para">The MySQL connection. If the
link identifier is not specified, the last link opened by
<a href="function.mysql-connect.php" class="function">mysql_connect()</a> is assumed. If no such link is found, it
will try to create one as if <a href="function.mysql-connect.php" class="function">mysql_connect()</a> was called
with no arguments. If no connection is found or established, an
<b><tt class="constant">E_WARNING</tt></b> level error is generated.</p></dd>
</dl>
<p>
</p>
</div>
<a name="function.mysql-thread-id.returnvalues"></a><div class="refsect1 returnvalues">
<h3 class="title">Return Values</h3>
<p class="para">
The thread ID on success or <b><tt class="constant">FALSE</tt></b> on failure.
</p>
</div>
<a name="function.mysql-thread-id.examples"></a><div class="refsect1 examples">
<h3 class="title">Examples</h3>
<p class="para">
</p><div class="example">
<p><b>Example #1 <b>mysql_thread_id()</b> example</b></p>
<div class="example-contents programlisting">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB"><?php<br />$link </span><span style="color: #007700">= </span><span style="color: #0000BB">mysql_connect</span><span style="color: #007700">(</span><span style="color: #DD0000">'localhost'</span><span style="color: #007700">, </span><span style="color: #DD0000">'mysql_user'</span><span style="color: #007700">, </span><span style="color: #DD0000">'mysql_password'</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$thread_id </span><span style="color: #007700">= </span><span style="color: #0000BB">mysql_thread_id</span><span style="color: #007700">(</span><span style="color: #0000BB">$link</span><span style="color: #007700">);<br />if (</span><span style="color: #0000BB">$thread_id</span><span style="color: #007700">){<br /> </span><span style="color: #0000BB">printf</span><span style="color: #007700">(</span><span style="color: #DD0000">"current thread id is %d\n"</span><span style="color: #007700">, </span><span style="color: #0000BB">$thread_id</span><span style="color: #007700">);<br />}<br /></span><span style="color: #0000BB">?></span>
</span>
</code></div>
</div>
<div class="example-contents para"><p>The above example will output
something similar to:</p></div>
<div class="example-contents screen">
<div class="cdata"><pre>
current thread id is 73
</pre></div>
</div>
</div><p>
</p>
</div>
<a name="function.mysql-thread-id.seealso"></a><div class="refsect1 seealso">
<h3 class="title">See Also</h3>
<p class="para">
</p><ul class="simplelist">
<li class="member"><a href="function.mysql-ping.php" class="function" rel="rdfs-seeAlso">mysql_ping()</a> - Ping a server connection or reconnect if there is no connection</li>
<li class="member"><a href="function.mysql-list-processes.php" class="function" rel="rdfs-seeAlso">mysql_list_processes()</a> - List MySQL processes</li>
</ul><p>
</p>
</div>
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