Which of the below symbols is a newline character?

Which of the below symbols is a newline character?

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

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

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

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

3) Which statement will output $x on the screen?

4) What will be the output of the following PHP code?

$a = "clue";
 $a .= "get";
 echo "$a";

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

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