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<title>Copy hashing context</title>
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<div class="refnamediv">
<h1 class="refname">hash_copy</h1>
<p class="verinfo">(PHP 5 >= 5.3.0, PHP 7)</p><p class="refpurpose"><span class="refname">hash_copy</span> — <span class="dc-title">Copy hashing context</span></p>
</div>
<div class="refsect1 description" id="refsect1-function.hash-copy-description">
<h3 class="title">Description</h3>
<div class="methodsynopsis dc-description">
<span class="type"><a href="class.hashcontext.html" class="type HashContext">HashContext</a></span> <span class="methodname"><strong>hash_copy</strong></span>
( <span class="methodparam"><span class="type"><a href="class.hashcontext.html" class="type HashContext">HashContext</a></span> <code class="parameter">$context</code></span>
)</div>
</div>
<div class="refsect1 parameters" id="refsect1-function.hash-copy-parameters">
<h3 class="title">Parameters</h3>
<p class="para">
<dl>
<dt>
<code class="parameter">context</code></dt>
<dd>
<p class="para">
Hashing context returned by <span class="function"><a href="function.hash-init.html" class="function">hash_init()</a></span>.
</p>
</dd>
</dl>
</p>
</div>
<div class="refsect1 returnvalues" id="refsect1-function.hash-copy-returnvalues">
<h3 class="title">Return Values</h3>
<p class="para">
Returns a copy of Hashing Context.
</p>
</div>
<div class="refsect1 changelog" id="refsect1-function.hash-copy-changelog">
<h3 class="title">Changelog</h3>
<p class="para">
<table class="doctable informaltable">
<thead>
<tr>
<th>Version</th>
<th>Description</th>
</tr>
</thead>
<tbody class="tbody">
<tr>
<td>7.2.0</td>
<td>
Accept and return <a href="class.hashcontext.html" class="classname">HashContext</a> instead of resource.
</td>
</tr>
</tbody>
</table>
</p>
</div>
<div class="refsect1 examples" id="refsect1-function.hash-copy-examples">
<h3 class="title">Examples</h3>
<p class="para">
<div class="example" id="example-922">
<p><strong>Example #1 <span class="function"><strong>hash_copy()</strong></span> example</strong></p>
<div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB"><?php<br />$context </span><span style="color: #007700">= </span><span style="color: #0000BB">hash_init</span><span style="color: #007700">(</span><span style="color: #DD0000">"md5"</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">hash_update</span><span style="color: #007700">(</span><span style="color: #0000BB">$context</span><span style="color: #007700">, </span><span style="color: #DD0000">"data"</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">/* copy context to be able to continue using it */<br /></span><span style="color: #0000BB">$copy_context </span><span style="color: #007700">= </span><span style="color: #0000BB">hash_copy</span><span style="color: #007700">(</span><span style="color: #0000BB">$context</span><span style="color: #007700">);<br /><br />echo </span><span style="color: #0000BB">hash_final</span><span style="color: #007700">(</span><span style="color: #0000BB">$context</span><span style="color: #007700">), </span><span style="color: #DD0000">"\n"</span><span style="color: #007700">;<br /><br /></span><span style="color: #0000BB">hash_update</span><span style="color: #007700">(</span><span style="color: #0000BB">$copy_context</span><span style="color: #007700">, </span><span style="color: #DD0000">"data"</span><span style="color: #007700">);<br />echo </span><span style="color: #0000BB">hash_final</span><span style="color: #007700">(</span><span style="color: #0000BB">$copy_context</span><span style="color: #007700">), </span><span style="color: #DD0000">"\n"</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>
8d777f385d3dfec8815d20f7496026dc
511ae0b1c13f95e5f08f1a0dd3da3d93
</pre></div>
</div>
</div>
</p>
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