📄 function.dio-truncate.html

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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>Truncates file descriptor fd to offset bytes</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="function.dio-tcsetattr.html">dio_tcsetattr</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.dio-write.html">dio_write</a></div> <div class="up"><a href="ref.dio.html">Direct IO Functions</a></div> <div class="home"><a href="index.html">PHP Manual</a></div></div><hr /><div id="function.dio-truncate" class="refentry"> <div class="refnamediv">  <h1 class="refname">dio_truncate</h1>  <p class="verinfo">(PHP 4 &gt;= 4.2.0, PHP 5 &lt;= 5.0.5)</p><p class="refpurpose"><span class="refname">dio_truncate</span> &mdash; <span class="dc-title">   Truncates file descriptor fd to offset bytes   </span></p> </div> <div class="refsect1 description">  <h3 class="title">Description</h3>  <div class="methodsynopsis dc-description">   <span class="type">bool</span> <span class="methodname"><b><b>dio_truncate</b></b></span>    ( <span class="methodparam"><span class="type">resource</span> <tt class="parameter">$fd</tt></span>   , <span class="methodparam"><span class="type">int</span> <tt class="parameter">$offset</tt></span>   )</div>  <p class="para rdfs-comment">   <b>dio_truncate()</b> truncates a file to at most    <i><tt class="parameter">offset</tt></i> bytes in size.  </p>  <p class="para">   If the file previously was larger than this size, the extra data is    lost. If the file previously was shorter, it is unspecified whether the   file is left unchanged or is extended. In the latter case the extended    part reads as zero bytes.  </p> </div> <div class="refsect1 parameters">  <h3 class="title">Parameters</h3>  <p class="para">   <dl>    <dt>     <span class="term"><i><tt class="parameter">fd</tt></i></span>     <dd>      <p class="para">       The file descriptor returned by <a href="function.dio-open.html" class="function">dio_open()</a>.      </p>     </dd>    </dt>    <dt>     <span class="term"><i><tt class="parameter">offset</tt></i></span>     <dd>      <p class="para">       The offset in bytes.      </p>     </dd>    </dt>   </dl>  </p> </div> <div class="refsect1 returnvalues">  <h3 class="title">Return Values</h3>  <p class="para">   Returns <b><tt>TRUE</tt></b> on success or <b><tt>FALSE</tt></b> on failure.  </p> </div> <div class="refsect1 notes">  <h3 class="title">Notes</h3>  <blockquote><p><b class="note">Note</b>: <span class="simpara">This function is notimplemented on Windows platforms.</span></p></blockquote> </div></div><hr /><div style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="function.dio-tcsetattr.html">dio_tcsetattr</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.dio-write.html">dio_write</a></div> <div class="up"><a href="ref.dio.html">Direct IO Functions</a></div> <div class="home"><a href="index.html">PHP Manual</a></div></div></body></html>
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