200-550 Exam Questions

Which of the following statements about Reflection is correct?

What is the name of the PHP function used to automatically load non-yet defined classes?

When a class is defined as final it:

Type hinting in PHP allows the identification of the following variable types: (Choose 2)

In the following code, which classes can be instantiated? abstract class Graphics { abstract function draw($im, $col); } abstract class Point1 extends Graphics { public $x, $y; fun...

Which of the following code snippets is correct? (Choose 2)

Which of the following statements about PHP is false? (Choose 2)

Which of the following is correct? (Choose 2)

Which of the following functions are used to escape data within the context of HTML? (Choose 2)

In a shared hosting environment, session data can be read by PHP scripts written by any user. How can you prevent this? (Choose 2)

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

You work for a shared hosting provider, and your supervisor asks you to disable user scripts to dynamically load PHP extensions using the dl() function. How can you do this? (Choos...

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

Some databases support the LIMIT clause. ft is a method to ensure that

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

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

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

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

Which of the following statements is true?

Transactions are used to...

When a query that is supposed to affect rows is executed as part of a transaction, and reports no affected rows, it could mean that: (Choose 2)

Transactions should be used to: (Choose 2)

An unbuffered database query will: (Choose 2)

Which technique should be used to speed up joins without changing their results?

Consider the following XML code: <?xml version="1.0" encoding="utf-8"?> <books> <book id="1">PHP 5.5 in 42 Hours</book> <book id="2">Learning PHP 5.5 The Hard Way</book> </books> W...

What method can be used to find the tag <any> via the DOM extension?

What DOMElement method should be used to check for availability of a non-namespaced attribute?

Which of the following is an invalid DOM save method?

Which of the following code snippets writes the content of the "source.txt" to "target.txt"?

What is the output of the following code?

Which of the following parts must a XML document have in order to be well-formed?

Which of the following can be registered as entry points with a SoapServer instance (choose 2):

Which of the following statements about SOAP is NOT true?

What SimpleXML function is used to parse a file?

The XML document below has been parsed into $xml via SimpleXML. How can the value of <foo> tag accessed? <?xml version='1.0'?> <document> <bar> <foo>Value</foo> </bar> </document>

What parsing methodology is utilized by 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? <?xml version='1.0'?> <foo> <bar> <baz id="1">On...

How can a SimpleXML object be converted to a DOM object?

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

Which of the following statements are FALSE?

What DOM method is used to load HTML files?

What is the output of the following code? for ($i = 0; $i < 1.02; $i += 0.17) { $a[$i] = $i; } echo count($a);

After performing the following operations: $a = array('a', 'b', 'c'); $a = array_keys(array_flip($a)); What will be the value of $a?

PHP's array functions such as array_values() can be used on an object if the object...

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

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

What will be the result of the following operation? array_combine(array("A","B","C"), array(1,2,3));

Which of the following expressions will evaluate to a random value from an array below? $array = array("Sue","Mary","John","Anna");

What function can reverse the order of values in an array so that keys are preserved?

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