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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html> <head>  <title>Get an extended attribute</title>  <meta http-equiv="content-type" content="text/html; charset=UTF-8"> </head> <body><div style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="ref.xattr.html">xattr Functions</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.xattr-list.html">xattr_list</a></div> <div class="up"><a href="ref.xattr.html">xattr Functions</a></div> <div class="home"><a href="index.html">PHP Manual</a></div></div><hr /><div id="function.xattr-get" class="refentry"> <div class="refnamediv">  <h1 class="refname">xattr_get</h1>  <p class="verinfo">(PECL xattr:0.9-1.0)</p><p class="refpurpose"><span class="refname">xattr_get</span> &mdash; <span class="dc-title">   Get an extended attribute  </span></p> </div> <div class="refsect1 description">  <h3 class="title">Description</h3>  <div class="methodsynopsis dc-description">   <span class="type">string</span> <span class="methodname"><b><b>xattr_get</b></b></span>    ( <span class="methodparam"><span class="type">string</span> <tt class="parameter">$filename</tt></span>   , <span class="methodparam"><span class="type">string</span> <tt class="parameter">$name</tt></span>   [, <span class="methodparam"><span class="type">int</span> <tt class="parameter">$flags</tt></span>  ] )</div>  <p class="para rdfs-comment">   This function gets the value of an extended attribute of a file.  </p>  <p class="para">Extended attributes have two different namespaces: user and root. The user namespace is available to all users, while the root namespaceis available only to users with root privileges. xattr operates on the usernamespace  by default, but this can be changed with the<i><tt class="parameter">flags</tt></i> parameter.</p> </div> <div class="refsect1 parameters">  <h3 class="title">Parameters</h3>  <p class="para">   <dl>    <dt>     <span class="term"><i><tt class="parameter">filename</tt></i></span>     <dd>      <p class="para">       The file from which we get the attribute.      </p>     </dd>    </dt>    <dt>     <span class="term"><i><tt class="parameter">name</tt></i></span>     <dd>      <p class="para">       The name of the attribute.      </p>     </dd>    </dt>    <dt>     <span class="term"><i><tt class="parameter">flags</tt></i></span>     <dd>      <p class="para">       <table border="5">        <caption><b>Supported xattr flags</b></caption>        <colgroup>         <tbody valign="middle" class="tbody">          <tr valign="middle">           <td colspan="1" rowspan="1" align="left"><b><tt>XATTR_DONTFOLLOW</tt></b></td>           <td colspan="1" rowspan="1" align="left">Do not follow the symbolic link but operate on symbolic link itself.</td>          </tr>          <tr valign="middle">           <td colspan="1" rowspan="1" align="left"><b><tt>XATTR_ROOT</tt></b></td>           <td colspan="1" rowspan="1" align="left">Set attribute in root (trusted) namespace. Requires root privileges.</td>          </tr>         </tbody>        </colgroup>       </table>      </p>     </dd>    </dt>   </dl>  </p> </div> <div class="refsect1 returnvalues">  <h3 class="title">Return Values</h3>  <p class="para">   Returns a string containing the value or <b><tt>FALSE</tt></b> if the attribute doesn&#039;t    exist.   </p> </div> <div class="refsect1 examples">  <h3 class="title">Examples</h3>  <p class="para">   <div class="example">    <p><b>Example #1 Checks if system administrator has signed the file</b></p>    <div class="example-contents"><div class="phpcode"><code><span style="color: #000000"><span style="color: #0000BB">&lt;?php<br />$file&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #DD0000">'/usr/local/sbin/some_binary'</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$signature&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">xattr_get</span><span style="color: #007700">(</span><span style="color: #0000BB">$file</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">'Root&nbsp;signature'</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">XATTR_ROOT</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">/*&nbsp;...&nbsp;check&nbsp;if&nbsp;$signature&nbsp;is&nbsp;valid&nbsp;...&nbsp;*/<br /><br /></span><span style="color: #0000BB">?&gt;</span></span></code></div>    </div>   </div>  </p> </div> <div class="refsect1 seealso">  <h3 class="title">See Also</h3>  <p class="para">   <ul class="simplelist">    <li class="member"><a href="function.xattr-list.html" class="function" rel="rdfs-seeAlso">xattr_list()</a></li>    <li class="member"><a href="function.xattr-set.html" class="function" rel="rdfs-seeAlso">xattr_set()</a></li>    <li class="member"><a href="function.xattr-remove.html" class="function" rel="rdfs-seeAlso">xattr_remove()</a></li>   </ul>  </p> </div></div><hr /><div style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="ref.xattr.html">xattr Functions</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.xattr-list.html">xattr_list</a></div> <div class="up"><a href="ref.xattr.html">xattr Functions</a></div> <div class="home"><a href="index.html">PHP Manual</a></div></div></body></html>
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