Which of following variables can be assigned a value to it?
  1. $3hello<

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Which of following variables can be assigned a value to it?

  1. $3hello
  2. $_hello
  3. $this
  4. $This



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

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

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

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

4) Which version of PHP introduced Try/catch Exception?

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

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