200-500 Practice Exam Questions and Answers

What is the method used to execute XPath queries in the SimpleXML extension?

How can the id attribute of the 2nd baz element from the XML string below be retrieved from the SimpleXML object found inside $xml?

One

Two

Which of the following statements about database connections are commonly true? (Choose 2)

Is the following code piece E_STRICT compliant?

final class Testing {

var $test = 0;

public function tester() {

return "Tested!";

}}

What is the output of the following code:

str_replace(array("Apple","Orange"), array("Orange","Apple"), "Oranges are orange and Apples are green");

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

The purpose of the singleton pattern is to...

When uploading a file to a PHP script using the HTTP PUT method, where would the information about this file be available?

In a shared hosting environment, session data can be read by PHP scripts written by any user. How can you prevent this?

What PHP function can be used to remove a local file?

Which of the following functions can help prevent session fixation vulnerabilities?

Which is the most secure approach for handling dynamic data in SQL queries?

Which of the following statements about exceptions are correct? (Choose 2)

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?

What function allows resizing of PHP's file write buffer?

How can you determine if magic_quotes_gpc is enabled? (Choose 2)

Which of the following is correct? (Choose 2)

1) A class can extend more than one class.

2) A class can implement more than one class.

3) A class can extend more than one interface.

4) A class can implement more than one interface.

5) An interface can extend more than one interface.

6) An interface can implement more than one interface.

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

What will the following code print?

echo addslashes('I am a small "HTML" string, which is

\'invalid\'.');

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?

How can precisely one byte be read from a file, pointed by $fp? (Choose 2)

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

How many array elements will be found in the return value of:

split(".", "

What is the name of the key pointing to the domain name in the array returned by parse_url()?

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

What is the content of $c after the following code has executed?

$a = 2;

$b = 3;

$c = ($a++ * ++$b);

Which of the following data types cannot be directly manipulated by the client?

One common security risk is exposing error messages directly in the browser. Which PHP configuration directive can be disabled to prevent this?

What is the return value of the following code?

strpos("me myself and I", "m", 2)

What is the output of the following code?

$first = "second";

$second = "first";

echo $$$first;

Given the following code, what will be the value of $a?

$a = array('a', 'b');

array_push($a, array(1, 2));

Which of the following data types is implicitly passed by reference in PHP 5 while it is passed by value in PHP 4?