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<h1 class="refname">posix_getsid</h1>
<p class="verinfo">(PHP 4, PHP 5, PHP 7)</p><p class="refpurpose"><span class="refname">posix_getsid</span> — <span class="dc-title">Get the current sid of the process</span></p>
</div>
<div class="refsect1 description" id="refsect1-function.posix-getsid-description">
<h3 class="title">Description</h3>
<div class="methodsynopsis dc-description">
<span class="type">int</span> <span class="methodname"><strong>posix_getsid</strong></span>
( <span class="methodparam"><span class="type">int</span> <code class="parameter">$pid</code></span>
)</div>
<p class="para rdfs-comment">
Return the session id of the process <code class="parameter">pid</code>.
The session id of a process is the process group id of the session leader.
</p>
</div>
<div class="refsect1 parameters" id="refsect1-function.posix-getsid-parameters">
<h3 class="title">Parameters</h3>
<p class="para">
<dl>
<dt>
<code class="parameter">pid</code></dt>
<dd>
<p class="para">
The process identifier. If set to 0, the current process is
assumed. If an invalid <code class="parameter">pid</code> is
specified, then <strong><code>FALSE</code></strong> is returned and an error is set which
can be checked with <span class="function"><a href="function.posix-get-last-error.html" class="function">posix_get_last_error()</a></span>.
</p>
</dd>
</dl>
</p>
</div>
<div class="refsect1 returnvalues" id="refsect1-function.posix-getsid-returnvalues">
<h3 class="title">Return Values</h3>
<p class="para">
Returns the identifier, as an <span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>.
</p>
</div>
<div class="refsect1 examples" id="refsect1-function.posix-getsid-examples">
<h3 class="title">Examples</h3>
<p class="para">
<div class="example" id="example-4477">
<p><strong>Example #1 Example use of <span class="function"><strong>posix_getsid()</strong></span></strong></p>
<div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB"><?php<br />$pid </span><span style="color: #007700">= </span><span style="color: #0000BB">posix_getpid</span><span style="color: #007700">();<br />echo </span><span style="color: #0000BB">posix_getsid</span><span style="color: #007700">(</span><span style="color: #0000BB">$pid</span><span style="color: #007700">); </span><span style="color: #FF8000">//8805<br /></span><span style="color: #0000BB">?></span>
</span>
</code></div>
</div>
</div>
</p>
</div>
<div class="refsect1 seealso" id="refsect1-function.posix-getsid-seealso">
<h3 class="title">See Also</h3>
<p class="para">
<ul class="simplelist">
<li class="member">
<span class="function"><a href="function.posix-getpgid.html" class="function" rel="rdfs-seeAlso">posix_getpgid()</a> - Get process group id for job control</span>
</li>
<li class="member">
<span class="function"><a href="function.posix-setsid.html" class="function" rel="rdfs-seeAlso">posix_setsid()</a> - Make the current process a session leader</span>
</li>
<li class="member">POSIX man page GETSID(2)</li>
</ul>
</p>
</div>
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