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<title>Fetch all HTTP request headers</title>
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<h1 class="refname">apache_request_headers</h1>
<p class="verinfo">(PHP 4 >= 4.3.0, PHP 5)</p><p class="refpurpose"><span class="refname">apache_request_headers</span> — <span class="dc-title">Fetch all HTTP request headers</span></p>
</div>
<div class="refsect1 description" id="refsect1-function.apache-request-headers-description">
<h3 class="title">Description</h3>
<div class="methodsynopsis dc-description">
<span class="type">array</span> <span class="methodname"><strong>apache_request_headers</strong></span>
( <span class="methodparam">void</span>
)</div>
<p class="para rdfs-comment">
Fetches all HTTP request headers from the current request.
</p>
</div>
<div class="refsect1 returnvalues" id="refsect1-function.apache-request-headers-returnvalues">
<h3 class="title">Return Values</h3>
<p class="para">
An associative array of all the HTTP headers in the current request, or
<strong><code>FALSE</code></strong> on failure.
</p>
</div>
<div class="refsect1 changelog" id="refsect1-function.apache-request-headers-changelog">
<h3 class="title">Changelog</h3>
<p class="para">
<table class="doctable informaltable">
<thead>
<tr>
<th>Version</th>
<th>Description</th>
</tr>
</thead>
<tbody class="tbody">
<tr>
<td>5.4.0</td>
<td>
This function became available under FastCGI. Previously, it was
supported only when PHP was installed as an Apache module.
</td>
</tr>
<tr>
<td>4.3.3</td>
<td>
<p class="para">As of PHP 4.3.3 you can use this function with the
<a href="book.nsapi.html" class="link">NSAPI server module</a> in Netscape/iPlanet/SunONE
webservers, too.</p>
</td>
</tr>
</tbody>
</table>
</p>
</div>
<div class="refsect1 examples" id="refsect1-function.apache-request-headers-examples">
<h3 class="title">Examples</h3>
<p class="para">
<div class="example" id="example-4756">
<p><strong>Example #1 <span class="function"><strong>apache_request_headers()</strong></span> example</strong></p>
<div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB"><?php<br />$headers </span><span style="color: #007700">= </span><span style="color: #0000BB">apache_request_headers</span><span style="color: #007700">();<br /><br />foreach (</span><span style="color: #0000BB">$headers </span><span style="color: #007700">as </span><span style="color: #0000BB">$header </span><span style="color: #007700">=> </span><span style="color: #0000BB">$value</span><span style="color: #007700">) {<br /> echo </span><span style="color: #DD0000">"</span><span style="color: #0000BB">$header</span><span style="color: #DD0000">: </span><span style="color: #0000BB">$value</span><span style="color: #DD0000"> <br />\n"</span><span style="color: #007700">;<br />}<br /></span><span style="color: #0000BB">?></span>
</span>
</code></div>
</div>
<div class="example-contents"><p>The above example will output
something similar to:</p></div>
<div class="example-contents screen">
<div class="cdata"><pre>
Accept: */*
Accept-Language: en-us
Accept-Encoding: gzip, deflate
User-Agent: Mozilla/4.0
Host: www.example.com
Connection: Keep-Alive
</pre></div>
</div>
</div>
</p>
</div>
<div class="refsect1 notes" id="refsect1-function.apache-request-headers-notes">
<h3 class="title">Notes</h3>
<blockquote class="note"><p><strong class="note">Note</strong>:
<p class="para">
You can also get at the value of the common <acronym title="Common Gateway Interface">CGI</acronym> variables by
reading them from the environment, which works whether or not
you are using PHP as an <span class="productname">Apache</span> module. Use
<span class="function"><a href="function.phpinfo.html" class="function">phpinfo()</a></span> to see a list of all of the available
<a href="language.variables.predefined.html" class="link">environment variables</a>.
</p>
</p></blockquote>
</div>
<div class="refsect1 seealso" id="refsect1-function.apache-request-headers-seealso">
<h3 class="title">See Also</h3>
<p class="para">
<ul class="simplelist">
<li class="member"> <span class="function"><a href="function.apache-response-headers.html" class="function" rel="rdfs-seeAlso">apache_response_headers()</a> - Fetch all HTTP response headers</span></li>
</ul>
</p>
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