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<h1 class="refname">hash_update</h1>
<p class="verinfo">(PHP 5 >= 5.1.2, PHP 7, PECL hash >= 1.1)</p><p class="refpurpose"><span class="refname">hash_update</span> — <span class="dc-title">Pump data into an active hashing context</span></p>
</div>
<div class="refsect1 description" id="refsect1-function.hash-update-description">
<h3 class="title">Description</h3>
<div class="methodsynopsis dc-description">
<span class="type">bool</span> <span class="methodname"><strong>hash_update</strong></span>
( <span class="methodparam"><span class="type"><a href="class.hashcontext.html" class="type HashContext">HashContext</a></span> <code class="parameter">$context</code></span>
, <span class="methodparam"><span class="type">string</span> <code class="parameter">$data</code></span>
)</div>
</div>
<div class="refsect1 parameters" id="refsect1-function.hash-update-parameters">
<h3 class="title">Parameters</h3>
<p class="para">
<dl>
<dt>
<code class="parameter">context</code></dt>
<dd>
<p class="para">
Hashing context returned by <span class="function"><a href="function.hash-init.html" class="function">hash_init()</a></span>.
</p>
</dd>
<dt>
<code class="parameter">data</code></dt>
<dd>
<p class="para">
Message to be included in the hash digest.
</p>
</dd>
</dl>
</p>
</div>
<div class="refsect1 returnvalues" id="refsect1-function.hash-update-returnvalues">
<h3 class="title">Return Values</h3>
<p class="para">
Returns <strong><code>TRUE</code></strong>.
</p>
</div>
<div class="refsect1 changelog" id="refsect1-function.hash-update-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>7.2.0</td>
<td>
Accept <a href="class.hashcontext.html" class="classname">HashContext</a> instead of resource.
</td>
</tr>
</tbody>
</table>
</p>
</div>
<div class="refsect1 seealso" id="refsect1-function.hash-update-seealso">
<h3 class="title">See Also</h3>
<p class="para">
<ul class="simplelist">
<li class="member"><span class="function"><a href="function.hash-init.html" class="function" rel="rdfs-seeAlso">hash_init()</a> - Initialize an incremental hashing context</span></li>
<li class="member"><span class="function"><a href="function.hash-update-file.html" class="function" rel="rdfs-seeAlso">hash_update_file()</a> - Pump data into an active hashing context from a file</span></li>
<li class="member"><span class="function"><a href="function.hash-update-stream.html" class="function" rel="rdfs-seeAlso">hash_update_stream()</a> - Pump data into an active hashing context from an open stream</span></li>
<li class="member"><span class="function"><a href="function.hash-final.html" class="function" rel="rdfs-seeAlso">hash_final()</a> - Finalize an incremental hash and return resulting digest</span></li>
</ul>
</p>
</div>
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