求助 PHP安装失败 - VPS侦探论坛

/root/lnmp1.6/src/php-5.6.40/ext/intl/intl_convertcpp.cpp:62:26: error: request for member ‘length’ in ‘from’, which is of non-class type ‘const int’
  int32_t capacity = from.length() * 3 + 1;
                        ^~~~~~
/root/lnmp1.6/src/php-5.6.40/ext/intl/intl_convertcpp.cpp:64:11: error: request for member ‘isEmpty’ in ‘from’, which is of non-class type ‘const int’
  if (from.isEmpty()) {
         ^~~~~~~
/root/lnmp1.6/src/php-5.6.40/ext/intl/intl_convertcpp.cpp:74:31: error: request for member ‘getBuffer’ in ‘from’, which is of non-class type ‘const int’
  const UChar *utf16buf = from.getBuffer();
                           ^~~~~~~~~
/root/lnmp1.6/src/php-5.6.40/ext/intl/intl_convertcpp.cpp:76:69: error: request for member ‘length’ in ‘from’, which is of non-class type ‘const int’
  u_strToUTF8WithSub(*res, capacity - 1, &actual_len, utf16buf, from.length(),
                                                                  ^~~~~~
make: *** [Makefile:932: ext/intl/intl_convertcpp.lo] Error 1