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Zend-Technologies Zend PHP 5 Certification Sample Questions:

1. You are creating an application that generates invoices in a variety of formats, including
PDF, ODS and HTML. Each of these formats is represented as a PHP class in your application. While some of the operations can be performed on all of the different formats
(such as saving and loading), other operations may be specific to one or two of the formats
(such as setting as read only). Which design pattern should you use for this application?

A) MVC
B) Factory
C) Singleton
D) Adapter

2. What function should be used to escape command line arguments that are passed to commands executed from PHP?

A) quotemeta()
B) escapeshellarg()
C) escapeshellcmd()
D) passthru()
E) addslashes()

3. What will the following code piece print?
echo strtr('Apples and bananas', 'ae', 'ea')

A) Applas end bananas
B) Applas end benenes
C) Apples and bananas
D) Epplas end benenes

4. What is the output of the following code?
1 <?php
2 function append($str)
3 {
4 $str = $str.'append';
5 }
6
7 function prepend(&$str)
8 {
9 $str = 'prepend'.$str;
1 0 }
1 1
1 2 $string = 'zce';
1 3 append(prepend($string));
1 4 echo $string;
1 5 ?>

A) prependzceappend
B) zceappend
C) prependzce
D) zce

5. You are creating an application that repeatedly connects to a database to retrieve order data for invoices. All data comes from the same database. In order to preserve resources, you have to ensure that only one database connection should be used at any time. The code also has to open as few new database connections as possible. Which design pattern should you use for this scenario?

A) MVC
B) Factory
C) Singleton
D) Adapter

Solutions: