200-550無料問題集「Zend-Technologies Zend Certified PHP Engineer」

質問 1

An object can be counted with count() and sizeof() if it...

（A）was cast to an object from an array

（B）has a public __count() method

（C）implements ArrayAccess

（D）None of the above

正解：D 解答を投票する

質問 2

When uploading a file to a PHP script using the HTTP PUT method, where would the file data be found?

（A）the global variable scope

（B）the input stream php://input

（C）the $_POST super-global

（D）the $_FILES super-global

正解：B 解答を投票する

質問 3

When would you use classes and when would you use namespaces?

（A）Use namespaces for performance-sensitive code, and classes when readability matters more

（B）Use classes for performance-sensitive code, and namespaces when readability matters more

（C）Use classes to encapsulate code and represent objects, and namespaces to avoid symbol name collisions

（D）Always use them; namespaces are always superior to classes

正解：C 解答を投票する

質問 4

Which of the following statements is NOT true?

（A）Class constants are being inherited

（B）Class constants are public

（C）Class constants can omit initialization (default to NULL)

（D）Class constants can be initialized by const

正解：C 解答を投票する

質問 5

Which of the following is NOT possible using reflection?

（A）Adding class methods

（B）Analysing of nearly any aspect of functions

（C）Analysing of nearly any aspect of classes and interfaces

（D）Implement dynamic construction (new with variable class name)

正解：A 解答を投票する

質問 6

Which PHP function retrieves a list of HTTP headers that have been sent as part of the HTTP response or are ready to be sent?

（A）headers()

（B）getresponseheaders()

（C）headers_sent()

（D）header()

（E）headers_list()

正解：E 解答を投票する

質問 7

What will an opcode cache ALWAYS automatically improve?

（A）Memory footprint of a PHP script

（B）None of the above

（C）Execution speed of a PHP script

（D）Efficiency of HTML markup generated by a PHP script

（E）Running time of a loop in a PHP script

正解：B 解答を投票する

質問 8

What will be the output value of the following code?
$array = array(1,2,3);
while (list(,$v) = each($array));
var_dump(current($array));

（A）bool(false)

（B）Array

（C）NULL

（D）int(3)

（E）int(1)

正解：A 解答を投票する

質問 9

Which of the following statements about Reflection is correct?

（A）Reflection only allows to reflect on built-in classes

（B）Reflection is an extension that can be disabled

（C）Built-in classes can be reflected on command line using php --rc <classname>

（D）Reflection is a new extension present only in PHP 5.3+

正解：C 解答を投票する

質問 10

What is the output of the following code?
$f = function () { return "hello"; };
echo gettype($f);

（A）function

（B）object

（C）string

（D）hello

正解：B 解答を投票する

質問 11

Late static binding is used in PHP to:

（A）Use caller class information provided in static method call

（B）Load dynamic libraries and extensions at runtime

（C）Find proper method to call according to the call arguments

（D）Resolve undefined class names by automatically including needed files

正解：A 解答を投票する

質問 12

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

（A）Strip all occurrences of the string javascript .

（B）None of the above.

（C）Enable magic_quotes_gpc .

（D）Strip all occurrences of the string <script .

正解：B 解答を投票する

質問 13

Which elements does the array returned by the function pathinfo() contain?

（A）root, dir, file

（B）dirname, filename, fileextension

（C）path, file

（D）dirname, basename, extension

正解：D 解答を投票する

質問 14

Which of the following superglobals does not necessarily contain data from the client?

（A）$_SESSION

（B）$_POST

（C）$_GET

（D）$_SERVER

正解：A 解答を投票する

質問 15

In the following code, which line should be changed so it outputs the number 2:
class A {
protected $x = array(); /* A */
public function getX() { /* B */
return $this->x; /* C */
}
}
$a = new A(); /* D */ array_push($a->getX(), "one"); array_push($a->getX(), "two"); echo count($a->getX());

（A）Line B, to: public function &getX() {

（B）Line C, to: return &$this->x;

（C）Line D, to: $a =& new A();

（D）No changes needed, the code would output 2 as is

（E）Line A, to: protected &$x = array();

正解：A 解答を投票する

質問 16

What is the return value of the following code: substr_compare("foobar", "bar", 3);

（A）FALSE

（B）1

（C）-1

（D）TRUE

（E）0

正解：E 解答を投票する

質問 17

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

（A）__put(), __receive(), __exists()

（B）set(), get(), isset()

（C）__set(), __get()

（D）__isset(), __unset()

（E）set(), get()

正解：C、D 解答を投票する

200-550 無料問題集「Zend-Technologies Zend Certified PHP Engineer」

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