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Zend-Technologies Zend PHP 5 Certification Sample Questions:

1. Which is the most efficient way to determine if a key is present in an array,assuming the array has no NULL values?

A) isset($a['key'])
B) in_array('key', array_keys($a))
C) array_key_exists('key', $a)
D) None of the above

2. You need to escape special characters to use user input inside a regular expression.
Which functions would you use? (Choose 2)

A) htmlentities()
B) preg_quote()
C) quotemeta()
D) addslashes()
E) regex_quote()

3. What is the output of the following script?
1 <?php
2 function fibonacci ($x1, $x2)
3 {
4 return $x1 + $x2;
5 }
6
7 $x1 = 0;
8 $x2 = 1;
9
1 0 for ($i = 0; $i < 10; $i++) {
1 1 echo fibonacci($x1, $x2) . ',';
1 2 }
1 3 ?>

A) 1,2,3,4,5,6,7,8,9
B) 1,2,3,5,8,13,21,34,55,89,
C) 1,2,3,4,5,6,7,8,9,10,
D) 1,1,1,1,1,1,1,1,1,1,

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

A) Parse error
B) 3.14

5. Which of the following are valid identifiers (Choose 3)

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

Solutions: