CSC 202 Pre Test

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

i) echo (“Hello World”);

ii) print (“Hello World”);

iii) printf (“Hello World”);

iv) sprintf (“Hello World”);

Which is the right way of declaring a variable in PHP?

i) $3hello

ii) $_hello

iii) $this

iv) $This

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

What will be the output of the following PHP code?

   $color = "maroon";

   $var = $color[2];

   echo "$var";

   ?>

Which type of function call is used in line 8?

   function calc($price, $tax)​

   {

       $total = $price + $tax;

   }

   $pricetag = 15;

   $taxtag = 3;

   calc($pricetag, $taxtag);​

   ?>

What will be the output of the following PHP code?

   $a = 5;

   $b = 5;

   echo ($a === $b);

   ?>

How to define a function in PHP?

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

i) if statements

ii) if-else statements

iii) if-elseif statements

iv) switch statements

What will be the output of the following PHP code ?

$i = 2;

while (++$i)

{  

   while ($i --> 0)

       print $i;

}

?>

What will be the output of the following PHP code?

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   $total = "25 students";

   $more = 10;

   $total = $total + $more;

   echo "$total";

   ?>

What will be the output of the following PHP code ?

$i = 0;

while ((--$i > ++$i) - 1)

{  

   print $i;

}

?>

What is the value of $a and $b after the function call?

   function doSomething( &$arg ) {

       $return = $arg;

       $arg += 1;

       return $return;​

   }

   $a = 3;

   $b = doSomething( $a );

   ?>

What will be the output of the following PHP code?

   function calc($price, $tax="")

   {

       $total = $price + ($price * $tax);

       echo "$total";

   }

   calc(42);​

   ?>

What will be the output of the following PHP code?

   $user = array("Ashley", "Bale", "Shrek", "Blank");

   for ($x=0; $x < count($user); $x++)​{

       if ($user[$x] == "Shrek") continue;

           printf ($user[$x]);

   }

   ?>

Who is the father of PHP?