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<?php $result=idn_to_ascii('.pm--domain.com'); var_dump($result); var_dump(intl_get_error_code()); var_dump(intl_get_error_message());
based on 4bXtW
Output for 7.4.0 - 7.4.13, 8.0.0 - 8.0.2
bool(false) int(0) string(12) "U_ZERO_ERROR"
Output for 7.2.0 - 7.2.33, 7.3.10 - 7.3.26
Deprecated: idn_to_ascii(): INTL_IDNA_VARIANT_2003 is deprecated in /in/0ekbB on line 3 bool(false) int(66567) string(69) "idn_to_ascii: cannot convert to ASCII: U_IDNA_ZERO_LENGTH_LABEL_ERROR"
Output for 7.3.0 - 7.3.9
Deprecated: idn_to_ascii(): INTL_IDNA_VARIANT_2003 is deprecated in /in/0ekbB on line 3 string(15) ".pm--domain.com" int(0) string(12) "U_ZERO_ERROR"