Problem:- Validating Email Address Form Input

Solution:-

<?php 

if ($_SERVER['REQUEST_METHOD']=='GET') {?>

<form action="<?php echo htmlentities($_SERVER['SCRIPT_NAME']); ?>" method="POST" >
 <input type="text" name="email"><br>
 <input type="submit" value="Check Mail ID">
</form>

<?php
}else{
 if (filter_input(INPUT_POST, 'email', FILTER_VALIDATE_EMAIL)) {
  echo $_POST['email'];
  }else{
   echo $_POST['email'], ' isn\'t a valid email ID';
  }
}
 


 ?>

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