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PHP basics

1/25 PHP is considered a server-side scripting language
- True
- False
2/25 What will be displayed in the browser?
- Hello
- Welcome to
- Welcome to W3docs
- Hello W3docs
3/25 Which of the following is the correct way to create an associative array in PHP?
- $array = ['key' => 'value'];
- $array = ['key', 'value'];
- $array = array('key', 'value');
- $array = array('key' => 'value');
4/25 In PHP, which operator is used for object comparison?
- ==
- ===
- <=>
- instanceof
5/25 What is the purpose of the 'include' statement in PHP?
- To import classes from another file
- To include HTML markup
- To include and execute the specified file
- To add external libraries
6/25 How can you get the total number of elements in an array in PHP?
- length()
- sizeof()
- array_length()
- count()
7/25 What is the correct syntax for creating a function in PHP?
- function NewFunction() {}
- create NewFunction() {}
- new Function() {}
- function: NewFunction() {}
8/25 Which PHP function is used to redirect the browser to a new page?
- header()
- redirect()
- goto()
- forward()
9/25 How can you declare a static variable in PHP?
- static $var;
- var static;
- $static var;
- static_var $var;
10/25 What is the correct way to declare a PHP interface?
- interface MyInterface {}
- class MyInterface {}
- new Interface MyInterface {}
- implement MyInterface {}
11/25 How can you declare a PHP variable that retains its value between function calls?
- static $var;
- public $var;
- global $var;
- persistent $var;
12/25 Which PHP function is used to split a string into an array by a delimiter?
- str_split()
- explode()
- split_string()
- divide()
13/25 Which function in PHP is used to get the length of a string?
- strlen()
- strlength()
- stringlen()
- length()
14/25 In PHP, what is the purpose of the 'isset()' function?
- Checks if a variable has been set and is not NULL
- Determines if a variable is an integer
- Checks if a function exists
- Sets a variable with a specified value
15/25 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
16/25 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
17/25 In PHP, which operator is used for error control?
- @
- #
- !
- $
18/25 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');
19/25 What is the purpose of the 'ob_start()' function in PHP?
- Starts output buffering
- Begins a new session
- Initializes an object
- Starts the output of a script
20/25 Which function in PHP can be used to create a new directory?
- mkdir()
- create_dir()
- new_directory()
- dir_create()
21/25 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};
22/25 What is the correct way to declare a PHP namespace?
- namespace MyNamespace;
- use MyNamespace;
- package MyNamespace;
- create_namespace MyNamespace;
23/25 What does the 'compact()' function in PHP do?
- Reduces the size of an array
- Creates an array containing variables and their values
- Compacts HTML output
- Minimizes memory usage
24/25 Which PHP function can be used to parse a query string into variables?
- parse_str()
- explode_query()
- split_query()
- query_parse()
25/25 In PHP, what is a trait?
- A method to create abstract classes
- A mechanism for code reuse in single inheritance languages
- A type of PHP variable
- An interface implementation
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