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Suppose we receive a form submitted by a post to subscribe to a newsletter. This form has only one field, an input text field named email. How would we validate whether the field is empty? Print a message "the email cannot be empty" in this case?
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Answer / Uttam Kumar Singh
In PHP, you can use the $_POST superglobal array to access the submitted data. To check if the 'email' field is empty, you can use the empty() function: if(empty($_POST['email'])) { echo "the email cannot be empty"; }
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