1.Considering the code below, which of these statements are true?

<?php 
    ini_set("allow_url_fopen", "1");
    $page = file_get_contents("http://www.codepunker.com");
    if($page!=FALSE)
    echo "Successfully fetched website contents";
    else
    echo "An error has occurred";

The correct setting for loading web pages from a script is "allow_url_include"

The "allow_url_fopen" option can not be changed through ini_set. It can only be set in php.ini for security reasons

The if statement should be "if($page!==FALSE)" because "file_get_contents" can return non boolean values which evaluate to false

2.What output will this code produce ?

<?php 
    class Disney
    {
        public $cartoon;

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

    $disney = new Disney("The Beauty and The Beast");
    $waltDisney = $disney;
    $waltDisney->cartoon = "Pinocchio";
    echo $disney->cartoon;

"Pinocchio" because $waltDisney and $Disney are pointing to the same object

"The Beauty and The Beast" because the $cartoon property in the $waltDisney object was changed

NULL because the Disney class was not instanciated inside the $waltDisney variable

3.What happens when the script below is executed ?

  <?php
    namespace CustomArea;
    error_reporting(E_ALL);
    ini_set("display_errors", "on");
    function var_dump($a)
    {
      return str_replace("Weird", $a, "Weird stuff can happen");
    }
    $a = "In programming";
    echo var_dump($a);
  ?>

PHP Fatal error: Cannot redeclare var_dump()

Weird stuff can happen

In programming stuff can happen

4.Which of the statements about traits below are true ?

PHP is "single inheritance" so traits allow coders to reuse sets of methods from the trait freely in several independent classes

An inherited member from a base class is overridden by a member inserted by a Trait, but members from the current class override Trait methods.

If two Traits insert a method with the same name in a class that uses them, a fatal error is produced and this naming conflict can not be bypassed

5.When dealing with cloned objects in PHP, which of the following statements are true ?

The programmer can make use of the __clone() magic method to stop an object from being cloned.

As of PHP 7.0.0, members of cloned objects can be accessed in a single expression without any assignments... Like this:
(clone new DateTime())->format('Y');

The __clone() magic method of a class is called before the actual cloning of the object occurs allowing the programmer to alter values before the cloning process begins.

6.How does Opcode Cache improve performance in PHP 5.5+ ?

Opcode Cache stores objects in memory so that they can be accessed directly by other processes.

Opcode Cache stores database query results thus eliminating the need of executing those queries again

OPcache stores precompiled script bytecode in memory, thus removing the need to load and parse scripts on each request.

7.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

8.Which of the following functions will sort an array in ascending order by value, while preserving key associations?

asort()

usort()

krsort()

ksort()

sort()

9.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

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

array_split()

split()

string_split()

preg_match_all()

explode()

11.Which function would you use to add an element to the beginning of an array?

array_shift()

array_push()

$array[0] = "value";

array_unshift()

array_pop()

12.What is the result of the following code snippet? $array = array('a' => 'John', 'b' => 'Coggeshall', 'c' => array('d' => 'John', 'e' => 'Smith')); function something($array) { extract($array); return $c['e']; } print something($array);

Smith

A PHP Warning

Coggeshall

NULL

Array

13.What is the output of the following PHP code? define("FOO", 10); $array = [10 => FOO,"FOO" => 20]; print $array[$array[FOO]] * $array["FOO"];

FOO

100

200

20

10

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

simplexml_load_file()

simplexml_load_string()

load()

loadFile()

loadXML()

None of the above

15.Which of the following will NOT instantiate a DateTime object with the current timestamp?

$date = new DateTime();

$date = new DateTime('@' . time());

$date = new DateTime('now');

$date = new DateTime(time());

16.How to access standard error stream in PHP ?

$stderr = STDERR;

$stderr = fopen("php://stderr", "w");

$stderr = stderr("w")

$stderr = fwrite("php://stderr");

17.What are the three access modifiers that you can use in PHP objects?

protected

public

static

private

final

18.How can you modify the copy of an object during a clone operation?

Put the logic in the object's constructor to alter the values

Implment your own function to do object copying

Implement the object's __clone() method

Implement __get() and __set() methods with the correct logic

Implement the __copy() method with the correct logic

19.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

20.Type-hinting and the instanceof keyword can be used to check what types of things about variables?

If a particular child class extends from it

If they are an instance of a particular interface

If they are an abstract class

If they have a particular parent class

If they are an instance of a particular class

21.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()

22.Which of the following php.ini directives should be disabled to improve the outward security of your application?

safe_mode

magic_quotes_gpc

register_globals

display_errors

allow_url_fopen

23.What is the best measure one can take to prevent a cross-site request forgery?

Disallow requests from outside hosts

Add a secret token to all form submissions

Turn off allow_url_fopen in php.ini

Filter all output

Filter all input

24.When comparing two strings, which of the following is acceptable?

$a === $b;

strcasecmp($a, $b);

strcmp($a, $b);

$a == $b;

str_compare($a, $b);

25.Which function is best suited for removing markup tags from a string?

strip_markup

strip_tags

str_replace

preg_replace

preg_strip

26.To destroy one variable within a PHP session you should use which method in PHP 5?

Unset the variable in $HTTP_SESSION_VARS

Use the session_destroy() function

Use the session_unset() function

unset the variable in $_SESSION using unset()

Any of the above are acceptable in PHP 5

27.When uploading a file using HTTP, which variable can be used to locate the file on PHP's local filesystem?

$_FILES['fieldname']['tmp_name']

$_FILES['fieldname']

$_FILES['fieldname'][0]['filename']

$_FILES['fieldname']['filename']

None of the above

28.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

29.Consider the following function: function redirect($url) { // Check to make sure we haven't already sent // the header: if(/*???????*/) { header("Location: $url"); } } What conditional should replace the ????? above?

!in_array("Location: $url", headers_list())

!header_exists("Location: $url")

!header_location($url)

$_SERVER['HTTP_LOCATION'] != $url

30.Which of the following is not a valid fopen() access mode:

b

x

a

w

r+