PHP basics

1/25 PHP is considered a server-side scripting language
- True
- False
2/25 Variables in PHP start with
- var
- variable
- $
- #
- &
3/25 How do you output "Hello W3docs" in PHP?
- Hello W3docs;
- echo Hello W3docs;
- echo (Hello W3docs) ;
- echo ("Hello W3docs") ;
- echo 'Hello W3docs' ;
4/25 What is the correct way of adding 1 to the variable?
- $var =+ 1;
- $var = $var+1;
- $var += 1;
- $var++;
5/25 What will be displayed in the browser?
- Hello
- Welcome to
- Welcome to W3docs
- Hello W3docs

6/25 What will be displayed in a browser ?

<?php 

   if ( 3 < 3 ) {

       echo "Hello";

   } elseif ( 3 > 3 )  {

       echo "Welcome to ";

   } else {

       echo " Say hello"

   }



   echo "  W3Docs !!";

?>

Hello
Welcome to
Say hello
Hello W3docs !!
Say hello W3docs !!
Welcome to W3docs !!

7/25 When is the default case of switch statement executed?
- When one of cases evaluate to true
- When other cases evaluate to false
- When other cases evaluate to true
- Always
8/25 How can you get the total number of elements in an array in PHP?
- length()
- sizeof()
- array_length()
- count()
9/25 What is the purpose of the 'session_start()' function in PHP?
- Starts a new PHP session
- Starts a new server session
- Initializes session variables
- Creates a new session cookie
10/25 What is the correct way to add elements to an array in PHP?
- $array[] = 'new_element';
- array_add($array, 'new_element');
- array_push('new_element');
- $array->add('new_element');
11/25 Which of these is a valid way to start a PHP session?
- session_start();
- begin_session();
- init_session();
- start_session();
12/25 What is the correct way to declare a PHP interface?
- interface MyInterface {}
- class MyInterface {}
- new Interface MyInterface {}
- implement MyInterface {}
13/25 Which PHP function is used to send a custom HTTP header?
- set_header()
- http_header()
- header()
- send_header()
14/25 What does the 'continue' statement do in a PHP loop?
- Stops the loop
- Skips the rest of the current loop iteration
- Continues execution without pausing
- Exits the loop and continues with the next statement
15/25 What does the 'final' keyword do when applied to a class method in PHP?
- Makes the method static
- Prevents the method from being overridden in child classes
- Makes the method abstract
- Indicates the method is the last in the class
16/25 How do you access a PHP superglobal variable inside a function?
- By declaring it as global inside the function
- By passing it as an argument to the function
- By using the 'this' keyword
- Superglobals are always accessible, no need for special syntax
17/25 Which of the following is a correct way to declare an associative array in PHP?
- $array = [1 => 'a', 2 => 'b'];
- $array = (1:'a', 2:'b');
- $array = array(1, 'a', 2, 'b');
- $array = {1: 'a', 2: 'b'};
18/25 Which of the following is NOT a valid PHP data type?
- String
- Integer
- Float
- Decimal
19/25 What is the purpose of the 'die()' function in PHP?
- Kills the server process
- Exits the current script and outputs a message
- Deletes a variable or an object
- Terminates a loop or a function
20/25 In PHP, how do you get the current date and time?
- date()
- getdate()
- now()
- current_time()
21/25 What does the '===' operator in PHP do?
- Compares the value and the type of two variables
- Compares only the value, not the type
- Assigns the value from right to left
- Compares two variables for inequality
22/25 Which PHP method is used to create a new object from a class?
- new
- create
- construct
- initialize
23/25 Which of the following is a correct way to define a case-insensitive constant in PHP?
- define('CONSTANT', 'value', true);
- const CONSTANT = 'value';
- define_case_insensitive('CONSTANT', 'value');
- constant('CONSTANT', 'value');
24/25 What does the 'file_put_contents()' function in PHP do?
- Reads content from a file
- Writes a string to a file
- Deletes content from a file
- Appends content to a file
25/25 How do you declare an indexed array in PHP?
- $array = array(1, 2, 3);
- $array = [1 => 'a', 2 => 'b'];
- $array = (1, 2, 3);
- $array = {1, 2, 3};
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PHP basics

1/25 PHP is considered a server-side scripting language

2/25 Variables in PHP start with

3/25 How do you output "Hello W3docs" in PHP?

4/25 What is the correct way of adding 1 to the variable?

5/25 What will be displayed in the browser?

6/25 What will be displayed in a browser ?

7/25 When is the default case of switch statement executed?

8/25 How can you get the total number of elements in an array in PHP?

9/25 What is the purpose of the 'session_start()' function in PHP?

10/25 What is the correct way to add elements to an array in PHP?

11/25 Which of these is a valid way to start a PHP session?

12/25 What is the correct way to declare a PHP interface?

13/25 Which PHP function is used to send a custom HTTP header?

14/25 What does the 'continue' statement do in a PHP loop?

15/25 What does the 'final' keyword do when applied to a class method in PHP?

16/25 How do you access a PHP superglobal variable inside a function?

17/25 Which of the following is a correct way to declare an associative array in PHP?

18/25 Which of the following is NOT a valid PHP data type?

19/25 What is the purpose of the 'die()' function in PHP?

20/25 In PHP, how do you get the current date and time?

21/25 What does the '===' operator in PHP do?

22/25 Which PHP method is used to create a new object from a class?

23/25 Which of the following is a correct way to define a case-insensitive constant in PHP?

24/25 What does the 'file_put_contents()' function in PHP do?

25/25 How do you declare an indexed array in PHP?