Zend 200-550 Online Practice Questions and Exam Preparation

Zend 200-550 Online Questions & Answers

• Question 191:

  What is the output of the following code? echo "1" + 2 * "0x02";

  A. 1
  B. 3
  C. 5
  D. 20
  E. 7
  C. 5

• Question 192:

  Which of the following statements is true?

  A. All PHP database extensions support prepared statements
  B. All PHP database extensions come with their own special helper functions to escape user data to be used in dynamic SQL queries
  C. All PHP database extensions provide an OOP interface
  D. All PHP database extensions appear in the output of php -m , if installed and enabled
  D. All PHP database extensions appear in the output of php -m , if installed and enabled

• Question 193:

  Which of the following code snippets DO NOT write the exact content of the file "source.txt" to "target.txt"? (Choose 2)

  A. file_put_contents("target.txt", fopen("source.txt", "r"));
  B. file_put_contents("target.txt", readfile("source.txt"));
  C. file_put_contents("target.txt", join(file("source.txt"), "\n"));
  D. file_put_contents("target.txt", file_get_contents("source.txt"));
  E. $handle = fopen("target.txt", "w+"); fwrite($handle, file_get_contents("source.txt")); fclose($handle);
  B. file_put_contents("target.txt", readfile("source.txt"));
  C. file_put_contents("target.txt", join(file("source.txt"), "\n"));

• Question 194:

  Before the headers are sent, how can you remove a previously set header?

  A. Use the header_remove() function, providing the name of the header
  B. Use the die() function to abort the PHP script
  C. Not possible
  D. Use the headers_list() function, providing the name of the header as the second argument
  A. Use the header_remove() function, providing the name of the header

• Question 195:

  What is the result of the following code?

  class T { const A = 42 + 1; } echo T::A;

  A. 42
  B. 43
  C. Parse error
  C. Parse error

• Question 196:

  Which PHP function sets a cookie and URL encodes its value when sending it to the browser?

  setcookie, setcookie()

• Question 197:

  What is the output of the following code?

  $text = 'This is text';

  $text1 = <<<'TEXT'

  $text

  TEXT;

  $text2 = <<

  $text1

  TEXT;

  echo "$text2";

  A. This is text
  B. $text
  C. $text1
  D. $text2
  B. $text

• Question 198:

  Consider the following XML code:

  PHP 5.5 in 42 Hours

  Learning PHP 5.5 The Hard Way

  Which of the following SimpleXML calls prints the name of the second book? (Let $xml = simplexml_load_file("books.xml"); .) (Choose 2)

  A. echo $xml->books->book[2];
  B. echo $xml->books->book[1];
  C. echo $xml->book[1];
  D. echo $xml->xpath("/books/book[@id=2]");
  E. $c = $xml->children(); echo $c[1];
  C. echo $xml->book[1];
  E. $c = $xml->children(); echo $c[1];

• Question 199:

  What is the output of the following code?

  class Foo Implements ArrayAccess {

  function offsetExists($k) { return true;}

  function offsetGet($k) {return 'a';}

  function offsetSet($k, $v) {}

  function offsetUnset($k) {}

  }

  $x = new Foo();

  echo array_key_exists('foo', $x)?'true':'false';

  A. true
  B. false
  B. false

• Question 200:

  SimpleXML provides the ability to iterate over items in an XML document, as well as access items within it as if they were object properties. When creating your own classes to access data, implementing which of the following would NOT achieve this goal?

  A. __toString
  B. Iterator
  C. __get/__set
  D. ArrayAccess
  A. __toString