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run code in 300+ PHP versions simultaneously
<?php $email = "1@1.com"; //Note the .com added echo "PHP Version: ".phpversion().'<br>'; if(filter_var($email, FILTER_VALIDATE_EMAIL)){ echo $email.'<br>'; var_dump(filter_var($email, FILTER_VALIDATE_EMAIL)); }else{ var_dump(filter_var($email, FILTER_VALIDATE_EMAIL)); } ?>

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37.08 ms | 402 KiB | 5 Q