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<?php var_dump([ idn_to_ascii('BÉbé.be', 0, INTL_IDNA_VARIANT_UTS46), idn_to_ascii('bÉbÉ.BE', 0, INTL_IDNA_VARIANT_UTS46), ]);
Output for 7.1.0 - 7.1.15, 7.2.0 - 7.2.33, 7.3.16 - 7.3.31, 7.4.0 - 7.4.32, 8.0.0 - 8.0.12, 8.0.14 - 8.0.30, 8.1.0 - 8.1.30, 8.2.0 - 8.2.25, 8.3.0 - 8.3.13
array(2) { [0]=> string(14) "xn--bb-bjab.be" [1]=> string(14) "xn--bb-bjab.be" }
Output for 7.3.32 - 7.3.33, 7.4.33, 8.0.13
Fatal error: Uncaught Error: Call to undefined function idn_to_ascii() in /in/iTRPJ:4 Stack trace: #0 {main} thrown in /in/iTRPJ on line 4
Process exited with code 255.

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