strnatcasecmp Case insensitive string comparisons using a "natural order" algorithm &reftitle.description; intstrnatcasecmp stringstr1 stringstr2 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. &reftitle.parameters; str1 The first string. str2 The second string. &reftitle.returnvalues; 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. &reftitle.seealso; preg_match strcmp strcasecmp substr stristr strncasecmp strncmp strstr setlocale