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  <refentry id="function.hexdec">
   <refnamediv>
    <refname>hexdec</refname>
    <refpurpose>Hexadecimal to decimal</refpurpose>
   </refnamediv>
   <refsect1>
    <title>Description</title>
     <methodsynopsis>
      <type>int</type><methodname>hexdec</methodname>
      <methodparam><type>string</type><parameter>hex_string</parameter></methodparam>
     </methodsynopsis>
    <para>
     Returns the decimal equivalent of the hexadecimal number
     represented by the hex_string argument.  <function>hexdec</function> converts a
     hexadecimal string to a decimal number. The largest number that
     can be converted is 7fffffff or 2147483647 in decimal.
    </para>
    <para>
     <function>hexdec</function> will replace of any non-hexadecimal 
     characters it encounters by <literal>0</literal>. This way, all
     left zeros are ignored, but right zeros will be valued.
     <example>
      <title><function>hexdec</function> example</title>
      <programlisting role="php">
<![CDATA[
var_dump(hexdec("See"));
var_dump(hexdec("ee"));
// both prints "int(238)"

var_dump(hexdec("that"));
var_dump(hexdec("a0"));
// both prints int(160)
]]>
      </programlisting>
     </example>
    </para>
    <para>
     See also <function>dechex</function>.
    </para>
   </refsect1>
  </refentry>

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