Source of: /manual/en/function.header-remove.php
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<div id="function.header-remove" class="refentry">
<div class="refnamediv">
<h1 class="refname">header_remove</h1>
<p class="verinfo">(PHP 5 >= 5.3.0)</p><p class="refpurpose"><span class="refname">header_remove</span> — <span class="dc-title">Remove previously set headers</span></p>
</div>
<a name="function.header-remove.description"></a><div class="refsect1 description">
<h3 class="title">Description</h3>
<div class="methodsynopsis dc-description">
<span class="type"><span class="type void">void</span></span> <span class="methodname"><b>header_remove</b></span>
([ <span class="methodparam"><span class="type">string</span> <tt class="parameter">$name</tt></span>
] )</div>
<p class="para rdfs-comment">
Removes an HTTP header previously set using <a href="function.header.php" class="function">header()</a>.
</p>
</div>
<a name="function.header-remove.parameters"></a><div class="refsect1 parameters">
<h3 class="title">Parameters</h3>
<p class="para">
</p><dl>
<dt class="varlistentry">
<span class="term"><i><tt class="parameter">name</tt></i>
</span>
</dt><dd class="listitem">
<p class="para">
The header name to be removed.
</p>
<blockquote><p><b class="note">Note</b>:
<span class="simpara">
This parameter is case-insensitive.
</span>
</p></blockquote>
</dd>
</dl>
<p>
</p>
</div>
<a name="function.header-remove.returnvalues"></a><div class="refsect1 returnvalues">
<h3 class="title">Return Values</h3>
<p class="para">
No value is returned.
</p>
</div>
<a name="function.header-remove.examples"></a><div class="refsect1 examples">
<h3 class="title">Examples</h3>
<p class="para">
</p><div class="example">
<p><b>Example #1 Unsetting specific header.</b></p>
<div class="example-contents programlisting">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB"><?php<br />header</span><span style="color: #007700">(</span><span style="color: #DD0000">"X-Foo: Bar"</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">header</span><span style="color: #007700">(</span><span style="color: #DD0000">"X-Bar: Baz"</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">header_remove</span><span style="color: #007700">(</span><span style="color: #DD0000">"X-Foo"</span><span style="color: #007700">); <br /></span><span style="color: #0000BB">?></span>
</span>
</code></div>
</div>
<div class="example-contents para"><p>The above example will output
something similar to:</p></div>
<div class="example-contents screen">
<div class="cdata"><pre>
X-Bar: Baz
</pre></div>
</div>
</div><p>
</p><div class="example">
<p><b>Example #2 Unsetting all previously set headers.</b></p>
<div class="example-contents programlisting">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB"><?php<br />header</span><span style="color: #007700">(</span><span style="color: #DD0000">"X-Foo: Bar"</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">header</span><span style="color: #007700">(</span><span style="color: #DD0000">"X-Bar: Baz"</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">header_remove</span><span style="color: #007700">(); <br /></span><span style="color: #0000BB">?></span>
</span>
</code></div>
</div>
<div class="example-contents para"><p>The above example will output
something similar to:</p></div>
<div class="example-contents screen">
<div class="cdata"><pre>
</pre></div>
</div>
</div><p>
</p>
</div>
<a name="function.header-remove.notes"></a><div class="refsect1 notes">
<h3 class="title">Notes</h3>
<div class="caution"><b class="caution">Caution</b>
<p class="para">
This function will remove <em class="emphasis">all</em> headers set by PHP,
including cookies, session and the <i>X-Powered-By</i> headers.
</p>
</div>
</div>
<a name="function.header-remove.seealso"></a><div class="refsect1 seealso">
<h3 class="title">See Also</h3>
<p class="para">
</p><ul class="simplelist">
<li class="member"><a href="function.header.php" class="function" rel="rdfs-seeAlso">header()</a> - Send a raw HTTP header</li>
<li class="member"><a href="function.headers-sent.php" class="function" rel="rdfs-seeAlso">headers_sent()</a> - Checks if or where headers have been sent</li>
</ul><p>
</p>
</div>
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