   #PHP Manual String functions strlen strnatcmp

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                                 strnatcasecmp

   (PHP 4 )
   strnatcasecmp --  Case insensitive string comparisons using a "natural
   order" algorithm

Description

   int strnatcasecmp ( string str1, string str2)

   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 strnatcmp(), except that the comparison is
   not case sensitive. For more information see: Martin Pool's Natural
   Order String Comparison page.

   Similar to other string comparison functions, this one returns < 0 if
   str1 is less than str2; > 0 if str1 is greater than str2, and 0 if
   they are equal.

   See also ereg(), strcasecmp(), substr(), stristr(), strcmp(),
   strncmp(), strncasecmp(), strnatcmp(), and strstr().
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