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

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

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

2) What will be the output of the following code?

  $foo = 'Bob';
 $bar = &$foo;
         $bar = "My name is $bar";
 echo $bar;
 echo $foo;
 ?>

3) What will be the output of the following code?

function track()
  {
 	static $count = 0;
  $count++;
 	echo $count;
 }
 track();
 track();
 track();

4) Which of the below symbols is a newline character?

5) What will be the output of the following php code?

 $num  = "1";
 $num1 = "2";
 print $num+$num1;
 ?>