PHP files have a default file extension of..

PHP files have a default file extension of..

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1) Which of the following PHP statements will output Hello World on the screen?

1. echo (“Hello World”);
2. print (“Hello World”);
3. printf (“Hello World”);
4. sprintf (“Hello World”);

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 of the below symbols is a newline character?

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

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

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

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