<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> <title>Reads bytes from a file descriptor</title> </head> <body><div class="manualnavbar" style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="function.dio-open.html">dio_open</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.dio-seek.html">dio_seek</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-read" class="refentry"> <div class="refnamediv"> <h1 class="refname">dio_read</h1> <p class="verinfo">(PHP 4 >= 4.2.0, PHP 5 <= 5.0.5)</p><p class="refpurpose"><span class="refname">dio_read</span> — <span class="dc-title">Reads bytes from a file descriptor</span></p> </div> <div class="refsect1 description" id="refsect1-function.dio-read-description"> <h3 class="title">Description</h3> <div class="methodsynopsis dc-description"> <span class="type">string</span> <span class="methodname"><strong>dio_read</strong></span> ( <span class="methodparam"><span class="type">resource</span> <code class="parameter">$fd</code></span> [, <span class="methodparam"><span class="type">int</span> <code class="parameter">$len</code><span class="initializer"> = 1024</span></span> ] )</div> <p class="para rdfs-comment"> The function <span class="function"><strong>dio_read()</strong></span> reads and returns <em><code class="parameter">len</code></em> bytes from file with descriptor <em><code class="parameter">fd</code></em>. </p> </div> <div class="refsect1 parameters" id="refsect1-function.dio-read-parameters"> <h3 class="title">Parameters</h3> <p class="para"> <dl> <dt> <span class="term"><em><code class="parameter">fd</code></em></span> <dd> <p class="para"> The file descriptor returned by <span class="function"><a href="function.dio-open.html" class="function">dio_open()</a></span>. </p> </dd> </dt> <dt> <span class="term"><em><code class="parameter">len</code></em></span> <dd> <p class="para"> The number of bytes to read. If not specified, <span class="function"><strong>dio_read()</strong></span> reads 1K sized block. </p> </dd> </dt> </dl> </p> </div> <div class="refsect1 returnvalues" id="refsect1-function.dio-read-returnvalues"> <h3 class="title">Return Values</h3> <p class="para"> The bytes read from <em><code class="parameter">fd</code></em>. </p> </div> <div class="refsect1 seealso" id="refsect1-function.dio-read-seealso"> <h3 class="title">See Also</h3> <p class="para"> <ul class="simplelist"> <li class="member"> <span class="function"><a href="function.dio-write.html" class="function" rel="rdfs-seeAlso">dio_write()</a> - Writes data to fd with optional truncation at length</span></li> </ul> </p> </div> </div><hr /><div class="manualnavbar" style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="function.dio-open.html">dio_open</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.dio-seek.html">dio_seek</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>