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<?php $value = str_repeat('ф.', 31) . 's.s.s.s'; // "ф" is cyrillic symbol, only 38 characters, but after conversion to ASCII will be much more $result = idn_to_ascii($value, 0, INTL_IDNA_VARIANT_UTS46, $idnaInfo); var_dump($result); var_dump($idnaInfo); // $idnaInfo['errors'] should be equal to 4, it is value of IDNA_ERROR_DOMAIN_NAME_TOO_LONG
Output for 5.6.25 - 5.6.30, 7.0.10 - 7.0.20, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.32, 8.0.0 - 8.0.12, 8.0.14 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
bool(false) array(0) { }
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/EUSlJ:4 Stack trace: #0 {main} thrown in /in/EUSlJ on line 4
Process exited with code 255.
Output for 5.4.0 - 5.4.45, 5.6.0 - 5.6.24, 7.0.0 - 7.0.9
Fatal error: idn_to_ascii(): ICU returned an unexpected length in /in/EUSlJ on line 4
Process exited with code 255.
Output for 5.0.0 - 5.0.5, 5.1.1 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.5.0 - 5.5.38
Fatal error: Call to undefined function idn_to_ascii() in /in/EUSlJ on line 4
Process exited with code 255.
Output for 5.1.0
Fatal error: fatal flex scanner internal error--end of buffer missed in /in/EUSlJ on line 7
Process exited with code 255.
Output for 4.4.5 - 4.4.9
Fatal error: Call to undefined function: idn_to_ascii() in /in/EUSlJ on line 4
Process exited with code 255.
Output for 4.3.2 - 4.3.11, 4.4.0 - 4.4.4
Fatal error: Call to undefined function: idn_to_ascii() in /in/EUSlJ on line 4
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Call to undefined function: idn_to_ascii() in /in/EUSlJ on line 4

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