<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> <title>Decodes a hexadecimally encoded binary string</title> </head> <body><div class="manualnavbar" style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="function.sodium-crypto-stream.html">sodium_crypto_stream</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.sodium-increment.html">sodium_increment</a></div> <div class="up"><a href="ref.sodium.html">Sodium Functions</a></div> <div class="home"><a href="index.html">PHP Manual</a></div> </div><hr /><div id="function.sodium-hex2bin" class="refentry"> <div class="refnamediv"> <h1 class="refname">sodium_hex2bin</h1> <p class="verinfo">(PHP 7 >= 7.2.0)</p><p class="refpurpose"><span class="refname">sodium_hex2bin</span> — <span class="dc-title">Decodes a hexadecimally encoded binary string</span></p> </div> <div class="refsect1 description" id="refsect1-function.sodium-hex2bin-description"> <h3 class="title">Description</h3> <div class="methodsynopsis dc-description"> <span class="type">string</span> <span class="methodname"><strong>sodium_hex2bin</strong></span> ( <span class="methodparam"><span class="type">string</span> <code class="parameter">$hex</code></span> [, <span class="methodparam"><span class="type">string</span> <code class="parameter">$ignore</code></span> ] )</div> <p class="para rdfs-comment"> Decodes a hexadecimally encoded binary string. </p> <p class="para"> Like <span class="function"><a href="function.sodium-bin2hex.html" class="function">sodium_bin2hex()</a></span>, <span class="function"><strong>sodium_hex2bin()</strong></span> is resistant to side-channel attacks while <span class="function"><a href="function.hex2bin.html" class="function">hex2bin()</a></span> is not. </p> </div> <div class="refsect1 parameters" id="refsect1-function.sodium-hex2bin-parameters"> <h3 class="title">Parameters</h3> <dl> <dt> <code class="parameter">hex</code></dt> <dd> <p class="para"> Hexadecimal representation of data. </p> </dd> <dt> <code class="parameter">ignore</code></dt> <dd> <p class="para"> Optional string argument for characters to ignore. </p> </dd> </dl> </div> <div class="refsect1 returnvalues" id="refsect1-function.sodium-hex2bin-returnvalues"> <h3 class="title">Return Values</h3> <p class="para"> Returns the binary representation of the given <code class="parameter">hex</code> data. </p> </div> </div><hr /><div class="manualnavbar" style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="function.sodium-crypto-stream.html">sodium_crypto_stream</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.sodium-increment.html">sodium_increment</a></div> <div class="up"><a href="ref.sodium.html">Sodium Functions</a></div> <div class="home"><a href="index.html">PHP Manual</a></div> </div></body></html>