The following code piece should print “PHP is cool”, but unexpectedly, it just prints “cool”. How would you correct it?
<code>
echo str_replace(‘PHP is a pain.’, ‘a pain’, ‘cool’);
</code>

What will the following function call print?
<code>
printf(‘%010.6f’, 22);
</code>

In the following code, which class can be instantiated?
<code>
1 <?php
2 abstract class Graphics {
3 abstract function draw($im, $col);
4 }
5
6 abstract class Point1 extends Graphics {
7 public $x, $y;
8 function __construct($x, $y) {
9 $this->x = $x;
10 $this->y = $y;
11 }
12 function draw($im, $col) {
13 ImageSetPixel($im, $this->x, $this->y, $col);
14 }
15 }
16
17 class Point2 extends Point1 { }
18
19 abstract class Point3 extends Point2 { }
20 ?>
</code>

An object can be counted with count() and sizeof() if it

What is the output of the folowing code?
<code>
1 <?php
2 echo ‘1’ . (print ‘2’) + 3;
3 ?>
</code>

What happens if you try to access a property whose name is defined in a parent class as private,
and is not declared in the current class?

The purpose of the singleton pattern is to…

Is the following code piece E_STRICT compliant?
<code>
final class Testing {
private $test;
public function tester() {
return “Tested!”;
}}
</code>

What will the $array array contain at the end of this script?
<code>
1 <?php
2 function modifyArray (&$array)
3 {
4 foreach ($array as &$value)
5 {
6 $value = $value + 1;
7 }
8
9 $value = $value + 2;
10 }
11
12 $array = array (1, 2, 3);
13 modifyArray($array);
14 ?>
</code>

When uploading a file to a PHP script using the HTTP PUT method, where would the information
about this file be available?