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<?php $email = 'johnsnow@ヒキワリ.ナットウ.coop'; $email = str_replace('@-', '@', idn_to_ascii($email)); echo $email . "\n"; if (filter_var($email, FILTER_VALIDATE_EMAIL)) { echo 'valid'; } else { echo 'not valid'; }
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 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
xn--johnsnow@8x4hqntjic.xn--gckxcpg.coop valid
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/0nnGJ:4 Stack trace: #0 {main} thrown in /in/0nnGJ on line 4
Process exited with code 255.
Output for 7.2.0 - 7.2.33, 7.3.0 - 7.3.31
Deprecated: idn_to_ascii(): INTL_IDNA_VARIANT_2003 is deprecated in /in/0nnGJ on line 4 xn--johnsnow@8x4hqntjic.xn--gckxcpg.coop valid
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29
Fatal error: Call to undefined function idn_to_ascii() in /in/0nnGJ on line 4
Process exited with code 255.
Output for 4.4.5 - 4.4.9
Fatal error: Call to undefined function: idn_to_ascii() in /in/0nnGJ 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/0nnGJ 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/0nnGJ on line 4

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