function.fileperms.html

php的帮助文档,涉及到PHP的案例和基本语法,以及实际应用内容

   <div class="example">
    <p><b>Example #1 Display permissions as an octal value</b></p>
    <div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB">&lt;?php<br /></span><span style="color: #007700">echo&nbsp;</span><span style="color: #0000BB">substr</span><span style="color: #007700">(</span><span style="color: #0000BB">sprintf</span><span style="color: #007700">(</span><span style="color: #DD0000">'%o'</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">fileperms</span><span style="color: #007700">(</span><span style="color: #DD0000">'/tmp'</span><span style="color: #007700">)),&nbsp;-</span><span style="color: #0000BB">4</span><span style="color: #007700">);<br />echo&nbsp;</span><span style="color: #0000BB">substr</span><span style="color: #007700">(</span><span style="color: #0000BB">sprintf</span><span style="color: #007700">(</span><span style="color: #DD0000">'%o'</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">fileperms</span><span style="color: #007700">(</span><span style="color: #DD0000">'/etc/passwd'</span><span style="color: #007700">)),&nbsp;-</span><span style="color: #0000BB">4</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">?&gt;</span>
</span>
</code></div>
    </div>

    <div class="example-contents"><p>The above example will output:</p></div>
    <div class="example-contents"><pre>
<div class="cdata"><pre>
1777
0644
</pre></div>
    </pre></div>
   </div>
   <div class="example">
    <p><b>Example #2 Display full permissions</b></p>
    <div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB">&lt;?php<br />$perms&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">fileperms</span><span style="color: #007700">(</span><span style="color: #DD0000">'/etc/passwd'</span><span style="color: #007700">);<br /><br />if&nbsp;((</span><span style="color: #0000BB">$perms&nbsp;</span><span style="color: #007700">&amp;&nbsp;</span><span style="color: #0000BB">0xC000</span><span style="color: #007700">)&nbsp;==&nbsp;</span><span style="color: #0000BB">0xC000</span><span style="color: #007700">)&nbsp;{<br />&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #FF8000">//&nbsp;Socket<br />&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #0000BB">$info&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #DD0000">'s'</span><span style="color: #007700">;<br />}&nbsp;elseif&nbsp;((</span><span style="color: #0000BB">$perms&nbsp;</span><span style="color: #007700">&amp;&nbsp;</span><span style="color: #0000BB">0xA000</span><span style="color: #007700">)&nbsp;==&nbsp;</span><span style="color: #0000BB">0xA000</span><span style="color: #007700">)&nbsp;{<br />&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #FF8000">//&nbsp;Symbolic&nbsp;Link<br />&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #0000BB">$info&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #DD0000">'l'</span><span style="color: #007700">;<br />}&nbsp;elseif&nbsp;((</span><span style="color: #0000BB">$perms&nbsp;</span><span style="color: #007700">&amp;&nbsp;</span><span style="color: #0000BB">0x8000</span><span style="color: #007700">)&nbsp;==&nbsp;</span><span style="color: #0000BB">0x8000</span><span style="color: #007700">)&nbsp;{<br />&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #FF8000">//&nbsp;Regular<br />&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #0000BB">$info&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #DD0000">'-'</span><span style="color: #007700">;<br />}&nbsp;elseif&nbsp;((</span><span style="color: #0000BB">$perms&nbsp;</span><span style="color: #007700">&amp;&nbsp;</span><span style="color: #0000BB">0x6000</span><span style="color: #007700">)&nbsp;==&nbsp;</span><span style="color: #0000BB">0x6000</span><span style="color: #007700">)&nbsp;{<br />&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #FF8000">//&nbsp;Block&nbsp;special<br />&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #0000BB">$info&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #DD0000">'b'</span><span style="color: #007700">;<br />}&nbsp;elseif&nbsp;((</span><span style="color: #0000BB">$perms&nbsp;</span><span style="color: #007700">&amp;&nbsp;</span><span style="color: #0000BB">0x4000</span><span style="color: #007700">)&nbsp;==&nbsp;</span><span style="color: #0000BB">0x4000</span><span style="color: #007700">)&nbsp;{<br />&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #FF8000">//&nbsp;Directory<br />&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #0000BB">$info&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #DD0000">'d'</span><span style="color: #007700">;<br />}&nbsp;elseif&nbsp;((</span><span style="color: #0000BB">$perms&nbsp;</span><span style="color: #007700">&amp;&nbsp;</span><span style="color: #0000BB">0x2000</span><span style="color: #007700">)&nbsp;==&nbsp;</span><span style="color: #0000BB">0x2000</span><span style="color: #007700">)&nbsp;{<br />&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #FF8000">//&nbsp;Character&nbsp;special<br />&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #0000BB">$info&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #DD0000">'c'</span><span style="color: #007700">;<br />}&nbsp;elseif&nbsp;((</span><span style="color: #0000BB">$perms&nbsp;</span><span style="color: #007700">&amp;&nbsp;</span><span style="color: #0000BB">0x1000</span><span style="color: #007700">)&nbsp;==&nbsp;</span><span style="color: #0000BB">0x1000</span><span style="color: #007700">)&nbsp;{<br />&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #FF8000">//&nbsp;FIFO&nbsp;pipe<br />&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #0000BB">$info&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #DD0000">'p'</span><span style="color: #007700">;<br />}&nbsp;else&nbsp;{<br />&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #FF8000">//&nbsp;Unknown<br />&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #0000BB">$info&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #DD0000">'u'</span><span style="color: #007700">;<br />}<br /><br /></span><span style="color: #FF8000">//&nbsp;Owner<br /></span><span style="color: #0000BB">$info&nbsp;</span><span style="color: #007700">.=&nbsp;((</span><span style="color: #0000BB">$perms&nbsp;</span><span style="color: #007700">&amp;&nbsp;</span><span style="color: #0000BB">0x0100</span><span style="color: #007700">)&nbsp;?&nbsp;</span><span style="color: #DD0000">'r'&nbsp;</span><span style="color: #007700">:&nbsp;</span><span style="color: #DD0000">'-'</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$info&nbsp;</span><span style="color: #007700">.=&nbsp;((</span><span style="color: #0000BB">$perms&nbsp;</span><span style="color: #007700">&amp;&nbsp;</span><span style="color: #0000BB">0x0080</span><span style="color: #007700">)&nbsp;?&nbsp;</span><span style="color: #DD0000">'w'&nbsp;</span><span style="color: #007700">:&nbsp;</span><span style="color: #DD0000">'-'</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$info&nbsp;</span><span style="color: #007700">.=&nbsp;((</span><span style="color: #0000BB">$perms&nbsp;</span><span style="color: #007700">&amp;&nbsp;</span><span style="color: #0000BB">0x0040</span><span style="color: #007700">)&nbsp;?<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;((</span><span style="color: #0000BB">$perms&nbsp;</span><span style="color: #007700">&amp;&nbsp;</span><span style="color: #0000BB">0x0800</span><span style="color: #007700">)&nbsp;?&nbsp;</span><span style="color: #DD0000">'s'&nbsp;</span><span style="color: #007700">:&nbsp;</span><span style="color: #DD0000">'x'&nbsp;</span><span style="color: #007700">)&nbsp;:<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;((</span><span style="color: #0000BB">$perms&nbsp;</span><span style="color: #007700">&amp;&nbsp;</span><span style="color: #0000BB">0x0800</span><span style="color: #007700">)&nbsp;?&nbsp;</span><span style="color: #DD0000">'S'&nbsp;</span><span style="color: #007700">:&nbsp;</span><span style="color: #DD0000">'-'</span><span style="color: #007700">));<br /><br /></span><span style="color: #FF8000">//&nbsp;Group<br /></span><span style="color: #0000BB">$info&nbsp;</span><span style="color: #007700">.=&nbsp;((</span><span style="color: #0000BB">$perms&nbsp;</span><span style="color: #007700">&amp;&nbsp;</span><span style="color: #0000BB">0x0020</span><span style="color: #007700">)&nbsp;?&nbsp;</span><span style="color: #DD0000">'r'&nbsp;</span><span style="color: #007700">:&nbsp;</span><span style="color: #DD0000">'-'</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$info&nbsp;</span><span style="color: #007700">.=&nbsp;((</span><span style="color: #0000BB">$perms&nbsp;</span><span style="color: #007700">&amp;&nbsp;</span><span style="color: #0000BB">0x0010</span><span style="color: #007700">)&nbsp;?&nbsp;</span><span style="color: #DD0000">'w'&nbsp;</span><span style="color: #007700">:&nbsp;</span><span style="color: #DD0000">'-'</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$info&nbsp;</span><span style="color: #007700">.=&nbsp;((</span><span style="color: #0000BB">$perms&nbsp;</span><span style="color: #007700">&amp;&nbsp;</span><span style="color: #0000BB">0x0008</span><span style="color: #007700">)&nbsp;?<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;((</span><span style="color: #0000BB">$perms&nbsp;</span><span style="color: #007700">&amp;&nbsp;</span><span style="color: #0000BB">0x0400</span><span style="color: #007700">)&nbsp;?&nbsp;</span><span style="color: #DD0000">'s'&nbsp;</span><span style="color: #007700">:&nbsp;</span><span style="color: #DD0000">'x'&nbsp;</span><span style="color: #007700">)&nbsp;:<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;((</span><span style="color: #0000BB">$perms&nbsp;</span><span style="color: #007700">&amp;&nbsp;</span><span style="color: #0000BB">0x0400</span><span style="color: #007700">)&nbsp;?&nbsp;</span><span style="color: #DD0000">'S'&nbsp;</span><span style="color: #007700">:&nbsp;</span><span style="color: #DD0000">'-'</span><span style="color: #007700">));<br /><br /></span><span style="color: #FF8000">//&nbsp;World<br /></span><span style="color: #0000BB">$info&nbsp;</span><span style="color: #007700">.=&nbsp;((</span><span style="color: #0000BB">$perms&nbsp;</span><span style="color: #007700">&amp;&nbsp;</span><span style="color: #0000BB">0x0004</span><span style="color: #007700">)&nbsp;?&nbsp;</span><span style="color: #DD0000">'r'&nbsp;</span><span style="color: #007700">:&nbsp;</span><span style="color: #DD0000">'-'</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$info&nbsp;</span><span style="color: #007700">.=&nbsp;((</span><span style="color: #0000BB">$perms&nbsp;</span><span style="color: #007700">&amp;&nbsp;</span><span style="color: #0000BB">0x0002</span><span style="color: #007700">)&nbsp;?&nbsp;</span><span style="color: #DD0000">'w'&nbsp;</span><span style="color: #007700">:&nbsp;</span><span style="color: #DD0000">'-'</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$info&nbsp;</span><span style="color: #007700">.=&nbsp;((</span><span style="color: #0000BB">$perms&nbsp;</span><span style="color: #007700">&amp;&nbsp;</span><span style="color: #0000BB">0x0001</span><span style="color: #007700">)&nbsp;?<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;((</span><span style="color: #0000BB">$perms&nbsp;</span><span style="color: #007700">&amp;&nbsp;</span><span style="color: #0000BB">0x0200</span><span style="color: #007700">)&nbsp;?&nbsp;</span><span style="color: #DD0000">'t'&nbsp;</span><span style="color: #007700">:&nbsp;</span><span style="color: #DD0000">'x'&nbsp;</span><span style="color: #007700">)&nbsp;:<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;((</span><span style="color: #0000BB">$perms&nbsp;</span><span style="color: #007700">&amp;&nbsp;</span><span style="color: #0000BB">0x0200</span><span style="color: #007700">)&nbsp;?&nbsp;</span><span style="color: #DD0000">'T'&nbsp;</span><span style="color: #007700">:&nbsp;</span><span style="color: #DD0000">'-'</span><span style="color: #007700">));<br /><br />echo&nbsp;</span><span style="color: #0000BB">$info</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">?&gt;</span>
</span>
</code></div>
    </div>

    <div class="example-contents"><p>The above example will output:</p></div>
    <div class="example-contents"><pre>
<div class="cdata"><pre>
-rw-r--r--
</pre></div>
    </pre></div>
   </div>
  </p>
 </div>


 <div class="refsect1 notes">
  <h3 class="title">Notes</h3>
  <blockquote><p><b class="note">Note</b>: <span class="simpara">The results of this 
function are cached. See <a href="function.clearstatcache.html" class="function">clearstatcache()</a> for 
more details.</span></p></blockquote>
  <div class="tip"><b class="tip">Tip</b><p class="simpara">As of PHP 5.0.0, this function
can also be used with <em class="emphasis">some</em> URL wrappers.  Refer to 
<a href="wrappers.html" class="xref">List of Supported Protocols/Wrappers</a> for a listing of which wrappers support 
<a href="function.stat.html" class="function">stat()</a> family of functionality.</p></div>
 </div>


 <div class="refsect1 seealso">
  <h3 class="title">See Also</h3>
  <p class="para">
   <ul class="simplelist">
    <li class="member"><a href="function.is-readable.html" class="function" rel="rdfs-seeAlso">is_readable()</a></li>
    <li class="member"><a href="function.stat.html" class="function" rel="rdfs-seeAlso">stat()</a></li>
   </ul>
  </p>
 </div>


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