   #PHP Manual String functions strnatcmp strncmp

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                                  strncasecmp

   (PHP 4 >= 4.0.2)
   strncasecmp --  Binary safe case-insensitive string comparison of the
   first n characters

Description

   int strncasecmp ( string str1, string str2, int len)

   This function is similar to strcasecmp(), with the difference that you
   can specify the (upper limit of the) number of characters (len) from
   each string to be used in the comparison. If any of the strings is
   shorter than len, then the length of that string will be used for the
   comparison.

   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(), strcmp(), substr(), stristr(), and
   strstr().
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