1.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

2.What is the default value for the "max_execution_time" setting when running PHP as a CLI SAPI ?

Whatever is set as the value for "max_execution_time" in php.ini

0 (Zero) which stands for infinite

There is no "max_execution_time" setting if running PHP as a CLI SAPI

3.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

4.What is the output of the code below ?

<?php 
  $a = array();
  $a[0] = 1;
  unset($a[0]);
  echo ($a != null) ? 'True' : 'False';

True

False

Parse Error

5.What is the output of the code below ?

  
    <?php
    namespace animals;

    ini_set('error_reporting', E_ALL);
    ini_set('display_errors', 'on');

    class Cat
    {
      static function Definition()
      {
        return 'Cats are ' . __NAMESPACE__;
      }
    }

    namespace animals\pets;

    class Cat
    {
      static function Definition()
      {
        return 'Cats are ' . __NAMESPACE__;
      }
    }

    echo Cat::Definition();    
  

Cats are animals\pets

Fatal error: Cannot redeclare class Cat

Fatal error: Cannot re-declare class animals\pets\Cat in sub-namespace

6.Assuming that the code below is in a file named "test.php" and that PHP has full rights over the file, what happens if the file is executed from the command line without any arguments ?

  exec("rm -f " . dirname(__FILE__) . "/" .  $argv[0]);

The script exits without doing anything

The file test.php is deleted

A notice is thrown because $argv[0] is not defined and the script fails.

7.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

8.When running PHP's built in FastCGI Process Manager (FPM) which of the following statements are true ?

Settings initialized in the php-fpm.conf file with php_admin_flag can not be overwritten in the code through ini_set()

It doesn't provide any easy way of debugging slow performing requests/scripts

The special fastcgi_finish_request() function allows PHP to finish request and flush all data while continuing to do various tasks in the background.

9.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.

10.Which of th following statements about object serialization are true ?

After serializing an object, a programmer can fully recreate that object in another file by calling unserialize() even if the class definition doesn't exist.

Static class properties can be serialized, but can not be unserialized.

Static class properties can not be serialized.

11.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.

12.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

13.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

14.The following code snippet displays what for the resultant array? $a = array(1 => 0, 3 => 2, 4 => 6); $b = array(3 => 1, 4 => 3, 6 => 4); print_r(array_intersect($a, $b));

1 => 0

1 => 3, 3 => 1, 4 => 3

3 => 1, 3=> 2, 4 => 3, 4=> 6

1 => 0, 3 => 2, 4 => 6

An empty Array

15.Which of the following tags are an acceptable way to begin a PHP Code block?

<SCRIPT LANGUAGE="php">

<!

<%

<?

16.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)) { /* ... * / }

17.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

18.What is the output of the following? $a = 010; $b = 0xA; $c = 2; print $a + $b + $c;

20

22

$a is an invalid value

2

19.What does the following function do, when passed two integer values for $p and $q? function magic($p, $q) { return ($q == 0) ? $p: magic($q, $p % $q); }

Loops infinitely.

Switches the values of $p and $q.

Determines if they are both even or odd?

Determines the greatest common divisor between them.

Calculates the modulus between the two.

20.When checking to see if two variables contain the same instance of an object, which of the following comparisons should be used?

if($obj1->equals($obj2) && ($obj1 instanceof $obj2))

if($obj1->equals($obj2))

if($obj1 instanceof $obj2)

if($obj1 === $obj2)

21.What is wrong with the following code? function duplicate($obj) { $newObj = $obj; return $newObj; } $a = new MyClass(); $a_copy = duplicate($a); $a->setValue(10); $a_copy->setValue(20);

You must use return &$newObj instead

There is nothing wrong with this code

duplicate() must accept its parameter by reference

You must use the clone operator to make a copy of an object

duplicate() must return a reference

22.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

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

getString()

__get()

__value()

__toString()

__getString()

24.Which of the following are not valid ways to embed a variable into a string?

$a = "Value: $value->getValue()";

$a = "Value: {$value}";

$a = 'Value: $value';

$a = "Value: $value";

$a = "Value: {$value['val']}";

25.Which of the following is the best way to split a string on the "-=-" pattern?

They all are equally proper methods

str_split($string, strpos($string, "-=-"))

preg_split("-=-", $string);

explode("-=-", $string);

26.If regular expressions must be used, in general which type of regular expression functions available to PHP is preferred for performance reasons?

strtok() using regular expressions

preg_* regular expression functions

parse_str() using regular expressions

strregex* regular expression functions

ereg* regular expression functions

27.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

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.During an HTTP authentication, how does one determine the username and password provided by the browser?

Parse the HTTP headers manually using http_get_headers()

Use the get_http_username() and get_http_password() functions

Use the $_SERVER['HTTP_USER'] and $_SERVER['HTTP_PASSWORD'] variables

Use the $_SERVER['PHP_AUTH_USER'] and $_SERVER['PHP_AUTH_PW'] variables

Parse the $_SERVER['REQUEST_URI'] variable

30.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