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<title>Retrieve the system error message associated with the given errno</title>
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<h1 class="refname">posix_strerror</h1>
<p class="verinfo">(PHP 4 >= 4.2.0, PHP 5)</p><p class="refpurpose"><span class="refname">posix_strerror</span> — <span class="dc-title">Retrieve the system error message associated with the given errno</span></p>
</div>
<div class="refsect1 description" id="refsect1-function.posix-strerror-description">
<h3 class="title">Description</h3>
<div class="methodsynopsis dc-description">
<span class="type">string</span> <span class="methodname"><strong>posix_strerror</strong></span>
( <span class="methodparam"><span class="type">int</span> <code class="parameter">$errno</code></span>
)</div>
<p class="para rdfs-comment">
Returns the POSIX system error message associated with the given
<em><code class="parameter">errno</code></em>. You may get the
<em><code class="parameter">errno</code></em> parameter by calling
<span class="function"><a href="function.posix-get-last-error.html" class="function">posix_get_last_error()</a></span>.
</p>
</div>
<div class="refsect1 parameters" id="refsect1-function.posix-strerror-parameters">
<h3 class="title">Parameters</h3>
<p class="para">
<dl>
<dt>
<span class="term"><em><code class="parameter">errno</code></em></span>
<dd>
<p class="para">
A POSIX error number, returned by
<span class="function"><a href="function.posix-get-last-error.html" class="function">posix_get_last_error()</a></span>. If set to 0, then the
string "Success" is returned.
</p>
</dd>
</dt>
</dl>
</p>
</div>
<div class="refsect1 returnvalues" id="refsect1-function.posix-strerror-returnvalues">
<h3 class="title">Return Values</h3>
<p class="para">
Returns the error message, as a string.
</p>
</div>
<div class="refsect1 examples" id="refsect1-function.posix-strerror-examples">
<h3 class="title">Examples</h3>
<p class="para">
<div class="example" id="example-3671">
<p><strong>Example #1 <span class="function"><strong>posix_strerror()</strong></span> example</strong></p>
<div class="example-contents"><p>This example will attempt to kill a process which does not
exist, then will print out the corresponding error message.</p></div>
<div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB"><?php<br />posix_kill</span><span style="color: #007700">(</span><span style="color: #0000BB">50</span><span style="color: #007700">,</span><span style="color: #0000BB">SIGKILL</span><span style="color: #007700">);<br />echo </span><span style="color: #0000BB">posix_strerror</span><span style="color: #007700">(</span><span style="color: #0000BB">posix_get_last_error</span><span style="color: #007700">()).</span><span style="color: #DD0000">"\n"</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">?></span>
</span>
</code></div>
</div>
<div class="example-contents"><p>The above example will output
something similar to:</p></div>
<div class="example-contents screen">
<div class="cdata"><pre>
No such process
</pre></div>
</div>
</div>
</p>
</div>
<div class="refsect1 seealso" id="refsect1-function.posix-strerror-seealso">
<h3 class="title">See Also</h3>
<p class="para">
<ul class="simplelist">
<li class="member"> <span class="function"><a href="function.posix-get-last-error.html" class="function" rel="rdfs-seeAlso">posix_get_last_error()</a> - Retrieve the error number set by the last posix function that failed</span></li>
</ul>
</p>
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