string_natural_case_compare_function 156 ext/standard/array.c ARRAYG(compare_func) = sort_type & PHP_SORT_FLAG_CASE ? string_natural_case_compare_function : string_natural_compare_function; string_natural_case_compare_function 148 ext/standard/php_string.h PHPAPI int string_natural_case_compare_function(zval *result, zval *op1, zval *op2 TSRMLS_DC);