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<title>Flushes the output to a file</title>
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</div><hr /><div id="function.fflush" class="refentry">
<div class="refnamediv">
<h1 class="refname">fflush</h1>
<p class="verinfo">(PHP 4 >= 4.0.1, PHP 5)</p><p class="refpurpose"><span class="refname">fflush</span> — <span class="dc-title">Flushes the output to a file</span></p>
</div>
<div class="refsect1 description" id="refsect1-function.fflush-description">
<h3 class="title">Description</h3>
<div class="methodsynopsis dc-description">
<span class="type">bool</span> <span class="methodname"><strong>fflush</strong></span>
( <span class="methodparam"><span class="type">resource</span> <code class="parameter">$handle</code></span>
)</div>
<p class="para rdfs-comment">
This function forces a write of all buffered output to the resource
pointed to by the file <em><code class="parameter">handle</code></em>.
</p>
</div>
<div class="refsect1 parameters" id="refsect1-function.fflush-parameters">
<h3 class="title">Parameters</h3>
<p class="para">
<dl>
<dt>
<span class="term"><em><code class="parameter">handle</code></em></span>
<dd>
<p class="para">The file pointer must be valid, and must point to
a file successfully opened by <span class="function"><a href="function.fopen.html" class="function">fopen()</a></span> or
<span class="function"><a href="function.fsockopen.html" class="function">fsockopen()</a></span> (and not yet closed by
<span class="function"><a href="function.fclose.html" class="function">fclose()</a></span>).</p>
</dd>
</dt>
</dl>
</p>
</div>
<div class="refsect1 returnvalues" id="refsect1-function.fflush-returnvalues">
<h3 class="title">Return Values</h3>
<p class="para">
Returns <strong><code>TRUE</code></strong> on success or <strong><code>FALSE</code></strong> on failure.
</p>
</div>
<div class="refsect1 examples" id="refsect1-function.fflush-examples">
<h3 class="title">Examples</h3>
<p class="para">
<div class="example" id="example-2359">
<p><strong>Example #1 File write example using <span class="function"><strong>fflush()</strong></span></strong></p>
<div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB"><?php<br />$filename </span><span style="color: #007700">= </span><span style="color: #DD0000">'bar.txt'</span><span style="color: #007700">;<br /><br /></span><span style="color: #0000BB">$file </span><span style="color: #007700">= </span><span style="color: #0000BB">fopen</span><span style="color: #007700">(</span><span style="color: #0000BB">$filename</span><span style="color: #007700">, </span><span style="color: #DD0000">'r+'</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">rewind</span><span style="color: #007700">(</span><span style="color: #0000BB">$file</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">fwrite</span><span style="color: #007700">(</span><span style="color: #0000BB">$file</span><span style="color: #007700">, </span><span style="color: #DD0000">'Foo'</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">fflush</span><span style="color: #007700">(</span><span style="color: #0000BB">$file</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">ftruncate</span><span style="color: #007700">(</span><span style="color: #0000BB">$file</span><span style="color: #007700">, </span><span style="color: #0000BB">ftell</span><span style="color: #007700">(</span><span style="color: #0000BB">$file</span><span style="color: #007700">));<br /></span><span style="color: #0000BB">fclose</span><span style="color: #007700">(</span><span style="color: #0000BB">$file</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">?></span>
</span>
</code></div>
</div>
</div>
</p>
</div>
<div class="refsect1 seealso" id="refsect1-function.fflush-seealso">
<h3 class="title">See Also</h3>
<p class="para">
<ul class="simplelist">
<li class="member"> <span class="function"><a href="function.clearstatcache.html" class="function" rel="rdfs-seeAlso">clearstatcache()</a> - Clears file status cache</span></li>
<li class="member"> <span class="function"><a href="function.fwrite.html" class="function" rel="rdfs-seeAlso">fwrite()</a> - Binary-safe file write</span></li>
</ul>
</p>
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