1.  $str="3dollars";
$a=20;
$a+=$str;
print($a);
?>
Output ?

2. <?php
function zz(& $x)
{
$x=$x+5;
}
?>
$x=10;
zz($x);
echo $x;

3. <?php
echo $_SERVER['REMOTE_ADDR'];
?>

4. <?php
$x=dir(".");
while($y=$x->read())
{
echo $y."
"
}
$y->close();
?>

What is the following output?

5. <?php
$qpt = 'QualityPointTechnologies';
echo preg_match("/^Quality/", $qpt);
?>

Output will be 1

6. <?php
$test="3.5seconds";
settype($test,"double");
settype($test,"integer");
settype($test,"string");
print($test);
?>

The following output will be 3

7. <?php
$x=array(2=>"mouse",7=>"keyboard");
$y=array_keys($x);
echo $y[1];
?>

Guess the correct output

8. $data="98.8degrees";
(double)$data;
(int)$data;
(string)$string;
echo $data;
?>

9. PHP is

10. <?php
$x="101.5degrees";
(double)$x;
(int)$x;
echo (string)$x;
?>