28 Questions
Which operator is used for string concatenation in PHP?
.
What is the result of the operation '5 + "7"' in PHP?
12
Which function in PHP is used to obtain a variable's type as a string?
gettype
In PHP, how are single-line comments denoted similar to Java?
What does the function 'strlen' do in PHP?
Returns the length of a string
What is the naming convention for variables in PHP?
Names are case-sensitive and must start with $
Which function is used to find the position of the first occurrence of a substring within a string in PHP?
strpos
Which variable type is not one of the basic types in PHP?
char
What is the result of 'strcmp($name, 'Brian Le')' if $name = 'Stefanie Hatcher'?
0
Which PHP function is used to extract a part of a string based on starting position and length?
substr
In PHP, what is the purpose of the 'implode' function?
Joins array elements with a string
What is the function of a web server when you type a URL in your browser?
Look up the server's IP address using DNS
In the context of web servers, what does PHP or ASP offer as an advantage?
Enhanced security due to hidden server code
What does server-side scripting allow web pages to do?
Customize a web page for individual users
Which term is used to describe programs written in languages like PHP, Java/JSP, or ASP.NET for web servers?
Server-side pages
Which role does a web server play in providing responses to web requests?
Sending back server-side program outputs
What is the purpose of specifying programs in URLs like 'http://www.facebook.com/home.php'?
Run the specified program on the web server
What is the value of $nonzero after typecasting $student_count as a boolean?
1
In PHP, which of the following values is considered FALSE?
"0"
What does FALSE print as in PHP?
""
Which PHP function is used to find the square root of a number?
sqrt
What will be the value of $e after typecasting $d as an integer?
3
In PHP, what type of value can result from the division between two integers?
Float
What is the correct way to include a variable in a string to avoid ambiguity in PHP?
{$age}th
In PHP, when is a variable considered to be NULL?
All of the above
How can you test if a variable is NULL in PHP?
Using the isset() function
Which of the following will print 'This line isn't going to be reached.' in PHP?
$name = NULL;
What does the following PHP for loop do: for ($i = 0; $i < 10; $i++) { print '$i squared is '.$i * $i;?
Prints the square of numbers from 0 to 9
Learn about how server side scripts and web servers work together to serve content to users. Explore the process of typing a URL in your browser, looking up the server's IP address, connecting to the server, fetching files, and receiving content. Understand the role of web server software such as Apache and applications like Java Servlets in handling requests.
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