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<?php var_dump(defined('INTL_IDNA_VARIANT_2003')); var_dump(defined('INTL_IDNA_VARIANT_UTS46'));
Output for 8.0.0 - 8.0.12, 8.0.14 - 8.0.20, 8.1.0 - 8.1.7
bool(false) bool(true)
Output for 4.3.5 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 7.3.32 - 7.3.33, 8.0.13
bool(false) bool(false)
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.34, 7.3.0 - 7.3.31, 7.4.0 - 7.4.30
bool(true) bool(true)
Output for 4.3.0 - 4.3.4
int(0) int(0)

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19.55 ms | 412 KiB | 5 Q