📄 function.bindec.html

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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html> <head>  <title>Binary to decimal</title>  <meta http-equiv="content-type" content="text/html; charset=UTF-8"> </head> <body><div style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="function.base-convert.html">base_convert</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.ceil.html">ceil</a></div> <div class="up"><a href="ref.math.html">Math Functions</a></div> <div class="home"><a href="index.html">PHP Manual</a></div></div><hr /><div id="function.bindec" class="refentry"> <div class="refnamediv">  <h1 class="refname">bindec</h1>  <p class="verinfo">(PHP 4, PHP 5)</p><p class="refpurpose"><span class="refname">bindec</span> &mdash; <span class="dc-title">Binary to decimal</span></p> </div> <div class="refsect1 description">  <h3 class="title">Description</h3>   <div class="methodsynopsis dc-description">    <span class="type"><a href="language.pseudo-types.html#language.types.number" class="type number">number</a></span> <span class="methodname"><b><b>bindec</b></b></span>     ( <span class="methodparam"><span class="type">string</span> <tt class="parameter">$binary_string</tt></span>    )</div>  <p class="para rdfs-comment">   Returns the decimal equivalent of the binary number represented by   the <i><tt class="parameter">binary_string</tt></i> argument.  </p>  <p class="para">   <b>bindec()</b> converts a binary number to an    <a href="language.types.integer.html" class="type integer">integer</a> or, if needed for size reasons, <a href="language.types.float.html" class="type float">float</a>.  </p> </div> <div class="refsect1 parameters">  <h3 class="title">Parameters</h3>  <p class="para">   <dl>    <dt>     <span class="term"><i><tt class="parameter">binary_string</tt></i></span>     <dd>      <p class="para">       The binary string to convert      </p>     </dd>    </dt>   </dl>  </p> </div> <div class="refsect1 returnvalues">  <h3 class="title">Return Values</h3>  <p class="para">   The decimal value of <i><tt class="parameter">binary_string</tt></i>  </p> </div> <div class="refsect1 changelog">  <h3 class="title">ChangeLog</h3>  <p class="para">   <table class="informaltable">    <colgroup>     <thead valign="middle">      <tr valign="middle">       <th colspan="1">Version</th>       <th colspan="1">Description</th>      </tr>     </thead>     <tbody valign="middle" class="tbody">      <tr valign="middle">       <td colspan="1" rowspan="1" align="left">Since 4.1.0</td>       <td colspan="1" rowspan="1" align="left">        The function can now convert numbers that are too large to        fit into the platforms <a href="language.types.integer.html" class="type integer">integer</a> type, larger values        are returned as <a href="language.types.float.html" class="type float">float</a> in that case.       </td>      </tr>     </tbody>    </colgroup>   </table>  </p> </div> <div class="refsect1 examples">  <h3 class="title">Examples</h3>  <p class="para">   <div class="example">    <p><b>Example #1 <b>bindec()</b> example</b></p>    <div class="example-contents"><div class="phpcode"><code><span style="color: #000000"><span style="color: #0000BB">&lt;?php<br /></span><span style="color: #007700">echo&nbsp;</span><span style="color: #0000BB">bindec</span><span style="color: #007700">(</span><span style="color: #DD0000">'110011'</span><span style="color: #007700">)&nbsp;.&nbsp;</span><span style="color: #DD0000">"\n"</span><span style="color: #007700">;<br />echo&nbsp;</span><span style="color: #0000BB">bindec</span><span style="color: #007700">(</span><span style="color: #DD0000">'000110011'</span><span style="color: #007700">)&nbsp;.&nbsp;</span><span style="color: #DD0000">"\n"</span><span style="color: #007700">;<br /><br />echo&nbsp;</span><span style="color: #0000BB">bindec</span><span style="color: #007700">(</span><span style="color: #DD0000">'111'</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">?&gt;</span></span></code></div>    </div>    <div class="example-contents"><p>The above example will output:</p></div>    <div class="example-contents"><pre><div class="cdata"><pre>51517</pre></div>    </pre></div>   </div>  </p> </div> <div class="refsect1 seealso">  <h3 class="title">See Also</h3>  <p class="para">   <ul class="simplelist">    <li class="member"><a href="function.decbin.html" class="function" rel="rdfs-seeAlso">decbin()</a></li>    <li class="member"><a href="function.octdec.html" class="function" rel="rdfs-seeAlso">octdec()</a></li>    <li class="member"><a href="function.hexdec.html" class="function" rel="rdfs-seeAlso">hexdec()</a></li>    <li class="member"><a href="function.base-convert.html" class="function" rel="rdfs-seeAlso">base_convert()</a></li>   </ul>  </p> </div></div><hr /><div style="text-align: center;"> <div class="prev" style="text-align: left; 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