200-710 Exam Questions

Which php.ini setting is usually required to use an opcode cache?

What is the output of the following code? var_dump (boolval (-1));

What is the output of the following code? var_dump (boolval ([]));

What is the output of the following code? var_dump (boolval (new StdClass()));

Consider the following code: $result = $value1 ??? $value2; Which operator needs to be used instead of ??? so that $result equals $value1 if $value1 evaluates to true, and equals $...

Which of the following is NOT true about PHP traits? (Choose 2)

Given the following code, what will the output be: trait MyTrait { private $abc = 1; public function increment() { $this->abc++; } public function getValue() { return $this->abc; }...

In the following code, which line should be changed so it outputs the number 2: ```php class A { protected $x = array(); /* A. */ public function getX() { /* B. */ return $this->x;...

What is the output of the following code? ```php class A { public $a = 1; public function __construct($a) { $this->a = $a; } public function mul() { return function ($x) { return $...

What is the output of the following code? ```php class Number { private $v = 0; public function __construct($v) { $this->v = $v; } public function mul() { return function ($x) { re...

What is the output of the following code? ```php class Number { private static $sv = 10; private $v; public function __construct($v) { $this->v = $v; } public function mul() { retu...

Which of the following statements about anonymous functions in PHP are NOT true? (Choose 2)

What will be the result of the following operation? ```php $a = array_merge([1,2,3] + [4=>1,5,6]); echo $a[2]; ```

Which of the following functions will allow identifying unique values inside an array?

When using password_hash() with the PASSWORD_DEFAULT algorithm constant, which of the following is true? (Choose 2)

Which of the following are NOT acceptable ways to create a secure password hash in PHP? (Choose 2)

What is the preferred method for preventing SQL injection?

Is the following code vulnerable to SQL Injection ($mysqli is an instance of the MySQLi class)? ```php $age = $mysqli->real_escape_string($_GET['age']); $name = $mysqli->real_escap...

Which of the following does NOT help to protect against session hijacking and fixation attacks?

Please provide the value of the $code variable in the following statement to set an HTTP status code that signifies that the requested resource was not found. ```php http_response_...

Which of the following PHP functions can be used to set the HTTP response code? (Choose 2)

What is the name of the header used to require HTTP authentication?

What types of HTTP authentication are supported by PHP? (Choose 2)

Which of the following items in the $_SERVER superglobal are important for authenticating the client when using HTTP Basic authentication? (Choose 2)

When tracking upload progress with sessions, the values of 2 INI settings are needed to determine the key in $_SESSION of the upload progress data. What are the INI settings? (Choo...

What is the name of the function that allows you register a set of functions that implement user- defined session handling?

Which of these databases is NOT supported by a PDO driver?

Which of these statements about PDO is NOT true?

What is the output of the following code? ```php class Test { public $value = 0; function test() { $this->value = 1; } function __construct() { $this->value = 2; } } $object = new...

Which methods can be used to overload object properties? (Choose 2)

What is the result of the following code? ```php class T { const A = 42 + 1; } echo T::A; ```

Which of the following statements is NOT true?

What is the result of the following code? ```php define('PI', 3.14); class T { const PI = PI; } class Math { const PI = T::PI; } echo Math::PI; ```

Given the following code, what is correct? ```php function f(stdClass &$x = NULL) { $x = 42; } $z = new stdClass; f($z); var_dump($z); ```

Which of the following statements is NOT correct?

Which of the following statements is correct?

Which of the following statements about exceptions is correct? (Choose 2)

What is the output of the following code? ```php try { class MyException extends Exception {}; try { throw new MyException; } catch (Exception $e) { echo "1: "; throw $e; } catch (...

Which of the following is NOT possible using reflection?

What is the name of the method that can be used to provide read access to virtual properties in a class?

Which of the following statements about Reflection are correct?

What is the name of the PHP function used to automatically load non-yet defined classes?

When a class is defined as final it:

Type hinting in PHP allows the identification of the following variable types: (Choose 2)

Which of the following code snippets is correct? (Choose 2)

Which of the following statements about PHP is false? (Choose 2)

Which of the following is correct? (Choose 2)

Which of the following functions are used to escape data within the context of HTML? (Choose 2)

In a shared hosting environment, session data can be read by PHP scripts written by any user. How can you prevent this? (Choose 2)

Which of the following filtering techniques prevents all cross-site scripting (XSS) vulnerabilities?