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<title>Decodes data encoded with MIME base64</title>
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<h1 class="refname">base64_decode</h1>
<p class="verinfo">(PHP 4, PHP 5, PHP 7)</p><p class="refpurpose"><span class="refname">base64_decode</span> — <span class="dc-title">Decodes data encoded with MIME base64</span></p>
</div>
<div class="refsect1 description" id="refsect1-function.base64-decode-description">
<h3 class="title">Description</h3>
<div class="methodsynopsis dc-description">
<span class="type">string</span> <span class="methodname"><strong>base64_decode</strong></span>
( <span class="methodparam"><span class="type">string</span> <code class="parameter">$data</code></span>
[, <span class="methodparam"><span class="type">bool</span> <code class="parameter">$strict</code><span class="initializer"> = <strong><code>FALSE</code></strong></span></span>
] )</div>
<p class="para rdfs-comment">
Decodes a base64 encoded <code class="parameter">data</code>.
</p>
</div>
<div class="refsect1 parameters" id="refsect1-function.base64-decode-parameters">
<h3 class="title">Parameters</h3>
<p class="para">
<dl>
<dt>
<code class="parameter">data</code></dt>
<dd>
<p class="para">
The encoded data.
</p>
</dd>
<dt>
<code class="parameter">strict</code></dt>
<dd>
<p class="para">
If the <code class="parameter">strict</code> parameter is set to <strong><code>TRUE</code></strong>
then the <span class="function"><strong>base64_decode()</strong></span> function will return
<strong><code>FALSE</code></strong> if the input contains character from outside the base64
alphabet. Otherwise invalid characters will be silently discarded.
</p>
</dd>
</dl>
</p>
</div>
<div class="refsect1 returnvalues" id="refsect1-function.base64-decode-returnvalues">
<h3 class="title">Return Values</h3>
<p class="para">
Returns the decoded data or <strong><code>FALSE</code></strong> on failure. The returned data may be
binary.
</p>
</div>
<div class="refsect1 changelog" id="refsect1-function.base64-decode-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>5.2.0</td>
<td><code class="parameter">strict</code> added</td>
</tr>
</tbody>
</table>
</p>
</div>
<div class="refsect1 examples" id="refsect1-function.base64-decode-examples">
<h3 class="title">Examples</h3>
<p class="para">
<div class="example" id="example-5011">
<p><strong>Example #1 <span class="function"><strong>base64_decode()</strong></span> example</strong></p>
<div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB"><?php<br />$str </span><span style="color: #007700">= </span><span style="color: #DD0000">'VGhpcyBpcyBhbiBlbmNvZGVkIHN0cmluZw=='</span><span style="color: #007700">;<br />echo </span><span style="color: #0000BB">base64_decode</span><span style="color: #007700">(</span><span style="color: #0000BB">$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>
This is an encoded string
</pre></div>
</div>
</div>
</p>
</div>
<div class="refsect1 seealso" id="refsect1-function.base64-decode-seealso">
<h3 class="title">See Also</h3>
<p class="para">
<ul class="simplelist">
<li class="member"><span class="function"><a href="function.base64-encode.html" class="function" rel="rdfs-seeAlso">base64_encode()</a> - Encodes data with MIME base64</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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