PHP Constants Quiz

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Match the following with their correct descriptions:

const = Cannot be created inside another block scope define = Can be created inside another block scope PHP Constant Arrays = Creating an Array constant using define() function Constants are Global = Automatically global and can be used across the entire script

Match the following PHP magic constants with their descriptions:

LINE = Returns the current line number CLASS = Returns the class name if used inside a class FILE = Returns the file name including the full path FUNCTION = Returns the function name if used inside a function

Match the following statements about constants with their correct explanations:

PHP Constant Arrays = Allows creating an Array constant using define() function Constants are Global = Automatically accessible and usable throughout the script PHP Magic Constants = Predefined constants that change value based on usage define() function usage = Enables defining constants within block scopes like functions

Match the PHP predefined constants with their purposes:

DIR = Returns the directory of the file METHOD = Returns both class and function name if used in a class method NAMESPACE = Returns the name of the namespace if used inside a namespace FILE = Includes the full path and file name Signup and view all the answers

Match the correct function calls with their expected outputs:

echo cars; = - Benz myTest(); = - Welcome to W3Schools.com! Signup and view all the answers

Match the following about constant creation methods with their functionalities:

const vs define = const cannot be created inside block scope, while define can be Creating Array constants = Achieved using define() function in PHP Global accessibility of constants = Constants are automatically global and can be used throughout scripts Magic constants in PHP = Nine predefined constants that change value based on usage Signup and view all the answers

Match the PHP operator with its description:

== = Returns true if $x is equal to $y === = Returns true if $x is equal to $y, and they are of the same type != = Returns true if $x is not equal to $y !== = Returns true if $x is not equal to $y, or they are not of the same type Signup and view all the answers

Match the PHP comparison operator with its functionality:

!= = Not equal <blockquote> = Greater than < = Less than = = Greater than or equal to </blockquote> Signup and view all the answers

Match the PHP logical operator with its purpose:

and = True if both $x and $y are true or = True if either $x or $y is true xor = True if either $x or $y is true, but not both ! = True if $x is not true Signup and view all the answers

Match the PHP operator with its arithmetic operation:

+= = Addition -= = Subtraction *= = Multiplication /= = Division Signup and view all the answers

Match the PHP operator with its usage in combining conditional statements:

&& = True if both $x and $y are true || = True if either $x or $y is true and = True if both $x and $y are true or = True if either $x or $y is true Signup and view all the answers

Match the PHP operator with its purpose in modulus operation:

%= = Modulus /= = Division *= = Multiplication -= = Subtraction Signup and view all the answers

Match the following descriptions with the correct statement regarding constants in PHP:

Constants in PHP cannot be changed once defined. = A constant is an identifier (name) for a simple value. Constant names in PHP should start with a letter or underscore. = A valid constant name starts with a letter or underscore (no $ sign before the constant name). Constants in PHP are automatically global across the entire script. = Note: Unlike variables, constants are automatically global across the entire script. The define() function in PHP is used to create constants. = To create a constant, use the define() function. Signup and view all the answers

Match the following scenarios with the correct method of creating constants in PHP:

Creating a case-sensitive constant using define(). = Create a constant with a case-sensitive name: define('GREETING', 'Welcome to W3Schools.com!'); Creating a case-insensitive constant using define(). = Create a constant with a case-insensitive name: define('GREETING', 'Welcome to W3Schools.com!', true); Creating a constant using the const keyword. = Create a constant with the const keyword: const MYCAR = 'Volvo'; Setting a default case sensitivity when creating constants. = Parameters: case-insensitive - Specifies whether the constant name should be case-insensitive. Default is false. Signup and view all the answers

Match the following statements with the correct usage of constants in PHP:

Accessing a defined constant using its name. = echo GREETING; // Outputs - Welcome to W3Schools.com! Accessing a case-insensitive constant using its name. = echo greeting; // Outputs - Welcome to W3Schools.com! Highlighting the difference between const and define() for creating constants. = const are always case-sensitive define() has has a case-insensitive option. Defining global constants across the entire script. = Note: Unlike variables, constants are automatically global across the entire script. Signup and view all the answers