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<h1 class="refname">mhash</h1>
<p class="verinfo">(PHP 4, PHP 5)</p><p class="refpurpose"><span class="refname">mhash</span> — <span class="dc-title">Computes hash</span></p>
</div>
<div class="refsect1 description" id="refsect1-function.mhash-description">
<h3 class="title">Description</h3>
<div class="methodsynopsis dc-description">
<span class="type">string</span> <span class="methodname"><strong>mhash</strong></span>
( <span class="methodparam"><span class="type">int</span> <code class="parameter">$hash</code></span>
, <span class="methodparam"><span class="type">string</span> <code class="parameter">$data</code></span>
[, <span class="methodparam"><span class="type">string</span> <code class="parameter">$key</code></span>
] )</div>
<p class="para rdfs-comment">
<span class="function"><strong>mhash()</strong></span> applies a hash function specified by
<em><code class="parameter">hash</code></em> to the <em><code class="parameter">data</code></em>.
</p>
</div>
<div class="refsect1 parameters" id="refsect1-function.mhash-parameters">
<h3 class="title">Parameters</h3>
<p class="para">
<dl>
<dt>
<span class="term"><em><code class="parameter">hash</code></em></span>
<dd>
<p class="para">
The hash ID. One of the <strong><code>MHASH_hashname</code></strong> constants.
</p>
</dd>
</dt>
<dt>
<span class="term"><em><code class="parameter">data</code></em></span>
<dd>
<p class="para">
The user input, as a string.
</p>
</dd>
</dt>
<dt>
<span class="term"><em><code class="parameter">key</code></em></span>
<dd>
<p class="para">
If specified, the function will return the resulting HMAC instead.
HMAC is keyed hashing for message authentication, or simply a message
digest that depends on the specified key. Not all algorithms
supported in mhash can be used in HMAC mode.
</p>
</dd>
</dt>
</dl>
</p>
</div>
<div class="refsect1 returnvalues" id="refsect1-function.mhash-returnvalues">
<h3 class="title">Return Values</h3>
<p class="para">
Returns the resulting hash (also called digest) or HMAC as a string, or
<strong><code>FALSE</code></strong> on error.
</p>
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