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. 
 
     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().