zend 200-710 practice test

CORRECT TEXT
Which value will be assigned to the key 0 in the following code?

What is the output of the following code?
echo '1' . (print '2') + 3;

• A. 123
• B. 213
• C. 142
• D. 214 E: Syntax error

What is the output of the following code?
$a = 3;
switch ($a) {
case 1: echo 'one'; break;
case 2: echo 'two'; break;
default: echo 'four'; break;
case 3: echo 'three'; break;
}

• A. one
• B. two
• C. three
• D. four

What is "instanceof" an example of?

• A. a boolean
• B. an operator
• C. a function
• D. a language construct E: a class magic

Which of the following may be used in conjunction with CASE inside a SWITCH statement?

• A. A scalar
• B. An expression
• C. A boolean
• D. All of the above

What is the output of the following code?
$a = 'a'; $b = 'b';
echo isset($c) ? $a.$b.$c : ($c = 'c').'d';

• A. abc
• B. cd
• C. 0d

Which of the following are valid identifiers? (Choose 3)

• A. function 4You() { }
• B. function _4You() { }
• C. function object() { }
• D. $1 = "Hello"; E: $_1 = "Hello World";

What super-global should be used to access information about uploaded files via a POST request?

• A. $_SERVER
• B. $_ENV
• C. $_POST
• D. $_FILES E: $_GET

What is the difference between "print" and "echo"?

• A. There is no difference.
• B. Print has a return value, echo does not
• C. Echo has a return value, print does not
• D. Print buffers the output, while echo does not E: None of the above

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

• A. 1
• B. 3
• C. 5
• D. 20 E: 7