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<title>Return a list of registered hashing algorithms suitable for hash_hmac</title>
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<h1 class="refname">hash_hmac_algos</h1>
<p class="verinfo">(PHP 7 >= 7.2.0)</p><p class="refpurpose"><span class="refname">hash_hmac_algos</span> — <span class="dc-title">Return a list of registered hashing algorithms suitable for hash_hmac</span></p>
</div>
<div class="refsect1 description" id="refsect1-function.hash-hmac-algos-description">
<h3 class="title">Description</h3>
<div class="methodsynopsis dc-description">
<span class="type">array</span> <span class="methodname"><strong>hash_hmac_algos</strong></span>
( <span class="methodparam">void</span>
)</div>
</div>
<div class="refsect1 returnvalues" id="refsect1-function.hash-hmac-algos-returnvalues">
<h3 class="title">Return Values</h3>
<p class="para">
Returns a numerically indexed array containing the list of supported hashing
algorithms suitable for <span class="function"><a href="function.hash-hmac.html" class="function">hash_hmac()</a></span>.
</p>
</div>
<div class="refsect1 examples" id="refsect1-function.hash-hmac-algos-examples">
<h3 class="title">Examples</h3>
<div class="example" id="example-927">
<p><strong>Example #1 <span class="function"><strong>hash_hmac_algos()</strong></span> example</strong></p>
<div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB"><?php<br />print_r</span><span style="color: #007700">(</span><span style="color: #0000BB">hash_hmac_algos</span><span style="color: #007700">());</span>
</span>
</code></div>
</div>
<div class="example-contents"><p>The above example will output
something similar to:</p></div>
<div class="example-contents screen">
<div class="cdata"><pre>
Array
(
[0] => md2
[1] => md4
[2] => md5
[3] => sha1
[4] => sha224
[5] => sha256
[6] => sha384
[7] => sha512/224
[8] => sha512/256
[9] => sha512
[10] => sha3-224
[11] => sha3-256
[12] => sha3-384
[13] => sha3-512
[14] => ripemd128
[15] => ripemd160
[16] => ripemd256
[17] => ripemd320
[18] => whirlpool
[19] => tiger128,3
[20] => tiger160,3
[21] => tiger192,3
[22] => tiger128,4
[23] => tiger160,4
[24] => tiger192,4
[25] => snefru
[26] => snefru256
[27] => gost
[28] => gost-crypto
[29] => haval128,3
[30] => haval160,3
[31] => haval192,3
[32] => haval224,3
[33] => haval256,3
[34] => haval128,4
[35] => haval160,4
[36] => haval192,4
[37] => haval224,4
[38] => haval256,4
[39] => haval128,5
[40] => haval160,5
[41] => haval192,5
[42] => haval224,5
[43] => haval256,5
)
</pre></div>
</div>
</div>
</div>
<div class="refsect1 notes" id="refsect1-function.hash-hmac-algos-notes">
<h3 class="title">Notes</h3>
<blockquote class="note"><p><strong class="note">Note</strong>:
<p class="para">
Before PHP 7.2.0 the only means to get a list of supported hash algorithms
has been to call <span class="function"><a href="function.hash-algos.html" class="function">hash_algos()</a></span> which also returns hash
algorithms that are not suitable for <span class="function"><a href="function.hash-hmac.html" class="function">hash_hmac()</a></span>.
</p>
</p></blockquote>
</div>
<div class="refsect1 seealso" id="refsect1-function.hash-hmac-algos-seealso">
<h3 class="title">See Also</h3>
<ul class="simplelist">
<li class="member"><span class="function"><a href="function.hash-hmac.html" class="function" rel="rdfs-seeAlso">hash_hmac()</a> - Generate a keyed hash value using the HMAC method</span></li>
<li class="member"><span class="function"><a href="function.hash-algos.html" class="function" rel="rdfs-seeAlso">hash_algos()</a> - Return a list of registered hashing algorithms</span></li>
</ul>
</div>
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