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<?php $email = 'geradolson5656@gmail.com'; if (checkEmailAndDomain($email)) { echo 'Yes'; } else { echo 'No'; } function checkEmailAndDomain($email) { $exp = "/^(.*)@(.*)$/"; preg_match($exp, $email, $matches); if (!empty($matches[1]) and (!filter_var($email, FILTER_VALIDATE_EMAIL))) return (false); return (checkdnsrr(idn_to_ascii($matches[2]), 'MX')); }
Output for 5.4.0 - 5.4.45, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 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
No
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/Dl3dE:19 Stack trace: #0 /in/Dl3dE(5): checkEmailAndDomain('geradolson5656@...') #1 {main} thrown in /in/Dl3dE on line 19
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/Dl3dE on line 19 No
Output for 5.5.0 - 5.5.38
Fatal error: Call to undefined function idn_to_ascii() in /in/Dl3dE on line 19
Process exited with code 255.

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