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<?php $email = 'jesuis@tropun.ninja'; $autreemail = '"very.unusual.@.unusual.com"@example.com'; $encoreunpourlaroute = "#!$%&'*+-/=?^_`{}|~@example.org"; $pasemail = 'jesuistroppasunninja'; var_dump(filter_var($email, FILTER_VALIDATE_EMAIL)); var_dump(filter_var($autreemail, FILTER_VALIDATE_EMAIL)); var_dump(filter_var($encoreunpourlaroute, FILTER_VALIDATE_EMAIL)); var_dump(filter_var($pasemail, FILTER_VALIDATE_EMAIL));
Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.29, 8.0.0 - 8.0.19, 8.1.0 - 8.1.6
string(19) "jesuis@tropun.ninja" string(40) ""very.unusual.@.unusual.com"@example.com" string(31) "#!$%&'*+-/=?^_`{}|~@example.org" bool(false)

preferences:
40 ms | 411 KiB | 5 Q