1.What happens when the code below is executed ?

  <?php
    class foo
    {
      private $variable;

      function __construct()
      {
        $this->variable = 1;
      }

      function __get($name)
      {
        return $this->$name;
      }
    }
    $a = new foo;
    echo $a->variable;
  ?>

The script outputs 1

Fatal error: Cannot access private property foo::$variable

The script outputs 0

2.What is the output of the code below ?

  
    <?php
    $a = array('one'=>'php', 'two'=>'javascript', 'three'=>'python');
    $b = array('python', 'javascript', 'php');

    if(array_values(array_reverse($a)) === $b)
      echo 'true';
    else
      echo 'false';
  

Fatal error: Can't use function return value in write context

false

true

3.What is the best way to store and verify passwords in PHP ?

Using a hashing algorithm like md5 or sha256 and then, when verifying compare the stored hash with the hash of the string submitted by the user

Using the built in password_create() and password_verify() functions in PHP

Using the strongest to date hashing algorithm combined with a salt to avoid dictionary attacks.

4.What happens if you execute the code below ?

<?php
    class someclass
    {
        public $someprop;
        
        function __construct()
        {
            $this->someprop = 1;
        }
    }

    function somefunc(&$instance) {
        unset($instance);
    }

    $instance = new someclass;
    somefunc($instance);
    var_dump($instance);

NULL

object(someclass)#1 (1) { ["someprop"]=> int(1) }

Warning (Only variables can be passed by refence) NULL

5.What is the output of the following PHP script?

                    <?php 
                        $a = 1;
                        $b = 2.5;
                        $c = 0xFF;
                        $d = $b + $c;
                        $e = $d * $b;
                        $f = ($d + $e) % $a;
                        print ($f + $e);
                  

643.75

432

643

257

432.75

6.How do you access standard I/O and error streams ?

Use stdin(), stdout() and stderr() functions

PHP::STDIN, PHP::STDOUT and PHP::STDERR class constants

Use PHP::stdin(), PHP::stdout() and PHP::stderr() class functions

STDIN, STDOUT and STDERR constants

7.What is the output of the following code block? $a = "The quick brown fox jumped over the lazy dog."; $b = array_map("strtoupper", explode(" ", $a)); foreach ($b as $value) { print "$value "; }

THE QUICK BROWN FOX JUMPED OVER THE LAZY DOG.

A PHP Error

Array Array Array Array Array Array Array Array Array

8.Which from the following list is not an appropriate use of an array?

As a list

All of these uses are valid

As a Lookup Table

A Stack

As a hash table

9.Which of the following functions could be used to break a string into an array?

array_split()

split()

string_split()

preg_match_all()

explode()

10.If you wanted a variable containing the letters A through Z, that allowed you to access each letter independently, which of the following approaches could you use?

$str = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ';

range('A', 'Z');

explode("", "ABCDEFGHIJKLMNOPQRSTUVWXYZ");

You would use the ALPHA_ARRAY constant

None of the above

11.Which key will not be displayed from the following code block? $array = array('a' => 'John', 'b' => 'Coggeshall', 'c' => array('d' => 'John', 'e' => 'Smith')); function display($item, $key) { print "$key => $item\n"; } array_walk_recursive($array, "display");

d

c

b

a

They all will be displayed

12.Given the following array: $array = array(1,1,2,3,4,4,5,6,6,6,6,3,2,2,2); The fastest way to determine the total number a particular value appears in the array is to use which function?

array_total_values

array_count_values

A foreach loop

count

a for loop

13.What is the best way to iterate and modify every element of an array using PHP 5?

You cannot modify an array during iteration.

for($i = 0; $i < count($array); $i++) { /* ... * / }

foreach($array as $key => &$val) { /* ... * / }

foreach($array as $key => $val) { /* ... * / }

while(list($key, $val) = each($array)) { /* ... * / }

14.What is the output of the following PHP script? $a = 1; $b = 2.5; $c = 0xFF; $d = $b + $c; $e = $d * $b; $f = ($d + $e) % $a; print ($f + $e);

643.75

432

643

257

432.75

15.What SimpleXML function is used to parse a file?

simplexml_load_file()

simplexml_load_string()

load()

loadFile()

loadXML()

None of the above

16.What is the difference between the ``include`` and ``require`` language constructs?

Require constructs can't be used with URL filenames

Include constructs cause a fatal error if the file doesn't exist

There is no difference other than the name

Include constructs are processed at run time; require constructs are processed at compile time

Require constructs cause a fatal error if the file can't be read

17.What is the output of the following? $a = 20; function myfunction($b) { $a = 30; global $a, $c; return $c = ($b + $a); } print myfunction(40) + $c;

120

Syntax Error

60

70

18.How does one access standard input/output and error streams in PHP 5?

STDIN, STDOUT and STDERR constants

Use stdin(), stdout() and stderr() functions

PHP::STDIN, PHP::STDOUT and PHP::STDERR class constants

Use PHP::stdin(), PHP::stdout() and PHP::stderr() class functions

19.In PHP 5 you can use the ______ operator to ensure that an object is of a particular type. You can also use _______ in the function declaration.

instanceof, is_a

instanceof, type-hinting

type, instanceof

===, type-hinting

===, is_a

20.What is the primary difference between a method declared as static and a normal method?

Static methods can only be called using the :: syntax and never from an instance

Static methods do not provide a reference to $this

Static methods cannot be called from within class instances

Static methods don't have access to the self keyword

There is no functional difference between a static and non-static method

21.To ensure that a given object has a particular set of methods, you must provide a method list in the form of an ________ and then attach it as part of your class using the ________ keyword.

array, interface

interface, implements

interface, extends

instance, implements

access-list, instance

22.The _______ method will be called automatically when an object is represented as a string.

getString()

__get()

__value()

__toString()

__getString()

23.When an object is serialized, which method will be called, automatically, providing your object with an opportunity to close any resources or otherwise prepare to be serialized?

__destroy()

__serialize()

__destruct()

__shutdown()

__sleep()

24.Which php.ini directive should be disabled to prevent the execution of a remote PHP script via an include or require construct?

You cannot disable remote PHP script execution

curl.enabled

allow_remote_url

allow_url_fopen

allow_require

25.Consider the following code: session_start(); if(!empty($_REQUEST['id']) && !empty($_REQUEST['quantity'])) { $id = scrub_id($_REQUEST['id']); $quantity = scrub_quantity($_REQUEST['quantity']) $_SESSION['cart'][] = array('id' => $id, 'quantity' => $quantity) } /* .... */ What potential security hole would this code snippet produce?

Cross-Site Scripting Attack

There is no security hole in this code

Code Injection

SQL Injection

Cross-Site Request Forgery

26.For an arbitrary string $mystring, which of the following checks will correctly determine if the string PHP exists within it?

if(strpos($mystring, "PHP") !== false)

if(!strpos($mystring, "PHP"))

if(strpos($mystring, "PHP") === true

if(strloc($mystring, "PHP") == true

if(strloc($mystring, "PHP") === false)

27.Identify the best approach to compare two variables in a binary-safe fashion

Both strcmp() and $a === $b

$a == $b

$a === $b

str_compare()

strstr()

28.Which PCRE regular expression will match the string PhP5-rocks

/^[hp1-5]*\-.*/i

/[hp1-5]*\-.?/

/[hp][1-5]*\-.*/

/[PhP]{3}[1-5]{2,3}\-.*$/

/[a-z1-5\-]*/

29.If you would like to change the session ID generation function, which of the following is the best approach for PHP 5?

Set the session.hash_function INI configuration directive

Use the session_set_id_generator() function

Set the session id by force using the session_id() function

Use the session_regenerate_id() function

Implement a custom session handler

30.Setting a cookie on the client in PHP 5 can be best accomplished by:

Use the add_cookie() function

Use the setcookie() function

Use the the apache_send_header() function

Setting a variable in the $_COOKIE superglobal