<!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>Remove previously set headers</title> </head> <body><div class="manualnavbar" style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="function.header-register-callback.html">header_register_callback</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.header.html">header</a></div> <div class="up"><a href="ref.network.html">Network Functions</a></div> <div class="home"><a href="index.html">PHP Manual</a></div> </div><hr /><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> <div class="refsect1 description" id="refsect1-function.header-remove-description"> <h3 class="title">Description</h3> <div class="methodsynopsis dc-description"> <span class="type"><span class="type void">void</span></span> <span class="methodname"><strong>header_remove</strong></span> ([ <span class="methodparam"><span class="type">string</span> <code class="parameter">$name</code></span> ] )</div> <p class="para rdfs-comment"> Removes an HTTP header previously set using <span class="function"><a href="function.header.html" class="function">header()</a></span>. </p> </div> <div class="refsect1 parameters" id="refsect1-function.header-remove-parameters"> <h3 class="title">Parameters</h3> <p class="para"> <dl> <dt> <span class="term"><em><code class="parameter">name</code></em></span> <dd> <p class="para"> The header name to be removed. </p> <blockquote class="note"><p><strong class="note">Note</strong>: <span class="simpara"> This parameter is case-insensitive. </span> </p></blockquote> </dd> </dt> </dl> </p> </div> <div class="refsect1 returnvalues" id="refsect1-function.header-remove-returnvalues"> <h3 class="title">Return Values</h3> <p class="para"> No value is returned. </p> </div> <div class="refsect1 examples" id="refsect1-function.header-remove-examples"> <h3 class="title">Examples</h3> <p class="para"> <div class="example" id="example-4482"> <p><strong>Example #1 Unsetting specific header.</strong></p> <div class="example-contents"> <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"><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> <div class="example" id="example-4483"> <p><strong>Example #2 Unsetting all previously set headers.</strong></p> <div class="example-contents"> <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"><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> </div> <div class="refsect1 notes" id="refsect1-function.header-remove-notes"> <h3 class="title">Notes</h3> <div class="caution"><strong class="caution">Caution</strong> <p class="para"> This function will remove <em class="emphasis">all</em> headers set by PHP, including cookies, session and the <em>X-Powered-By</em> headers. </p> </div> <blockquote class="note"><p><strong class="note">Note</strong>: <p class="para"> Headers will only be accessible and output when a SAPI that supports them is in use. </p> </p></blockquote> </div> <div class="refsect1 seealso" id="refsect1-function.header-remove-seealso"> <h3 class="title">See Also</h3> <p class="para"> <ul class="simplelist"> <li class="member"> <span class="function"><a href="function.header.html" class="function" rel="rdfs-seeAlso">header()</a> - Send a raw HTTP header</span></li> <li class="member"> <span class="function"><a href="function.headers-sent.html" class="function" rel="rdfs-seeAlso">headers_sent()</a> - Checks if or where headers have been sent</span></li> </ul> </p> </div> </div><hr /><div class="manualnavbar" style="text-align: center;"> <div class="prev" style="text-align: left; 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