PHP POST array with empty and isset

Question

I have the following multiple checkbox selection:

Apple


        

Answer 1

Answer:

1. $_POST array does not contain $_POST['fruit_list']
2. First answer is "No".A variable is considered empty if it does not exist or if its value equals FALSE. empty() does not generate a warning if the variable does not exist.see in php.net
3. Empty checks if the variable is set and if it is it checks it for null, "", 0, etc. Isset just checks if is it set, it could be anything not null. see