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<title>Encodes data with MIME base64</title>
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<h1 class="refname">base64_encode</h1>
<p class="verinfo">(PHP 4, PHP 5, PHP 7)</p><p class="refpurpose"><span class="refname">base64_encode</span> — <span class="dc-title">Encodes data with MIME base64</span></p>
</div>
<div class="refsect1 description" id="refsect1-function.base64-encode-description">
<h3 class="title">Description</h3>
<div class="methodsynopsis dc-description">
<span class="type">string</span> <span class="methodname"><strong>base64_encode</strong></span>
( <span class="methodparam"><span class="type">string</span> <code class="parameter">$data</code></span>
)</div>
<p class="para rdfs-comment">
Encodes the given <code class="parameter">data</code> with base64.
</p>
<p class="para">
This encoding is designed to make binary data survive transport through
transport layers that are not 8-bit clean, such as mail bodies.
</p>
<p class="para">
Base64-encoded data takes about 33% more space than the original
data.
</p>
</div>
<div class="refsect1 parameters" id="refsect1-function.base64-encode-parameters">
<h3 class="title">Parameters</h3>
<p class="para">
<dl>
<dt>
<code class="parameter">data</code></dt>
<dd>
<p class="para">
The data to encode.
</p>
</dd>
</dl>
</p>
</div>
<div class="refsect1 returnvalues" id="refsect1-function.base64-encode-returnvalues">
<h3 class="title">Return Values</h3>
<p class="para">
The encoded data, as a string.
</p>
</div>
<div class="refsect1 examples" id="refsect1-function.base64-encode-examples">
<h3 class="title">Examples</h3>
<p class="para">
<div class="example" id="example-5012">
<p><strong>Example #1 <span class="function"><strong>base64_encode()</strong></span> example</strong></p>
<div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB"><?php<br />$str </span><span style="color: #007700">= </span><span style="color: #DD0000">'This is an encoded string'</span><span style="color: #007700">;<br />echo </span><span style="color: #0000BB">base64_encode</span><span style="color: #007700">(</span><span style="color: #0000BB">$str</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:</p></div>
<div class="example-contents screen">
<div class="cdata"><pre>
VGhpcyBpcyBhbiBlbmNvZGVkIHN0cmluZw==
</pre></div>
</div>
</div>
</p>
</div>
<div class="refsect1 seealso" id="refsect1-function.base64-encode-seealso">
<h3 class="title">See Also</h3>
<p class="para">
<ul class="simplelist">
<li class="member"><span class="function"><a href="function.base64-decode.html" class="function" rel="rdfs-seeAlso">base64_decode()</a> - Decodes data encoded with MIME base64</span></li>
<li class="member"><span class="function"><a href="function.chunk-split.html" class="function" rel="rdfs-seeAlso">chunk_split()</a> - Split a string into smaller chunks</span></li>
<li class="member"><span class="function"><a href="function.convert-uuencode.html" class="function" rel="rdfs-seeAlso">convert_uuencode()</a> - Uuencode a string</span></li>
<li class="member"><a href="http://www.faqs.org/rfcs/rfc2045" class="link external">» RFC 2045</a> section 6.8</li>
</ul>
</p>
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