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  <refentry id="function.strnatcasecmp">
   <refnamediv>
    <refname>strnatcasecmp</refname>
    <refpurpose>
     Case insensitive string comparisons using a "natural order"
     algorithm
    </refpurpose>
   </refnamediv>
   <refsect1>
    <title>Description</title>
     <methodsynopsis>
      <type>int</type><methodname>strnatcasecmp</methodname>
      <methodparam><type>string</type><parameter>str1</parameter></methodparam>
      <methodparam><type>string</type><parameter>str2</parameter></methodparam>
     </methodsynopsis>
    <para>
     This function implements a comparison algorithm that orders
     alphanumeric strings in the way a human being would.  The
     behaviour of this function is similar to
     <function>strnatcmp</function>, except that the comparison is not
     case sensitive.  For more information see: Martin Pool's <ulink
     url="&url.strnatcmp;">Natural Order String Comparison</ulink>
     page.
    </para>
    <simpara>
     Similar to other string comparison functions, this one returns
     &lt; 0 if <parameter>str1</parameter> is less than
     <parameter>str2</parameter>; &gt; 0 if
     <parameter>str1</parameter> is greater than
     <parameter>str2</parameter>, and 0 if they are equal.
    </simpara>
    <simpara>
     See also <function>ereg</function>,
     <function>strcasecmp</function>, 
     <function>substr</function>,
     <function>stristr</function>, 
     <function>strcmp</function>,
     <function>strncmp</function>, 
     <function>strncasecmp</function>,
     <function>strnatcmp</function>, and 
     <function>strstr</function>.
    </simpara>
   </refsect1>
  </refentry>

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