A PHP script should start with ___ and end with ___:

A PHP script should start with ___ and end with ___:

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1) Which of the following php statement/statements will store 111 in variable num?

1. int $num = 111;
2. int mum = 111;
3. $num = 111;
4. 111 = $num;

2) Which of the below statements is equivalent to $add += $add ?

3) Which of the conditional statements is/are supported by PHP?

1. if statements
2. if-else statements
3. if-elseif statements
4. switch statements

4) We can use _________ to comment a single line?

1. /?
2. //
3. #
4. /* */

5) PHP files have a default file extension of..