$c = 3; If you give $var = 10, the variable automatically converts to an integer. It indicates lines that are commented out. 1. If two variables contain the same alphabet letters. Syntax of declaring a variable in PHP is given below: $variablename=value; Rules for declaring PHP variable: A variable must start with a dollar ($) sign, followed by the variable name. Some predefined variables in PHP are "superglobals", which means that they are always accessible, regardless of scope - and you can access them from any function, class or file without having to do anything special. The remaining characters can be underscores, letters, or numbers. You will learn more about strict and $y = 2; 10,20,10 ?>, A. Variables are containers that can store specified or determined values, similar to variables in mathematics. $y = 2; Variable variables are simply variables whose names are dynamically created by another variable's value. How to Sort an Array of Strings in JavaScript. How to check if a variable is an Integer in PHP? The assignment operator ( =) used to assign value to a variable. Get certifiedby completinga course today! PHP Constants MCQ Questions With Answers - Letsfindcourse What will be the output of the following PHP code? A variable name can only contain ____________? Practice competitive and technical Multiple Choice Questions and Answers (MCQs) with simple and logical explanations to prepare for tests and interviews. The PHP reference implementation is now produced by The PHP Group. What will be the output of the following PHP code? How to Define a Variable in PHP - StackHowTo It checks whether variable is set or not It checks whether variable is free or not There is no such function in PHP It checks whether variable is string or integer 2. Use a Variable to Define a PHP Function - ITCodar // invalid because of starts with a number $5input = 'Demo'; // valid because of starts with an underscore $_input = 'Demo'; // valid $input = 'Demo'; // valid because it starts with an underscore followed by number and string of characters which is allowed { PHP MCQs | MCQs on PHP Language - BYJUS Variables - PHP Questions and Answers - allindiaexams.in The following example will show how to output text and a variable: The following example will produce the same output as the example above: The following example will output the sum of two variables: Note: You will learn more about the echo statement and how Will give the information about all the predefined variables to know the server information You can declare or define a PHP variable using the $(dollar) sign at the start of the name by which you call the variable. function myTest() { C. For "sum" variable it is case-sensitive D PHP can be used to create web applications. PHP Global Variables - Superglobals - W3Schools (Exclamation) $ (Dollar) & (Ampersand) To print both, you need to echo them separately as given below: You can point the new variable to the old one. Explanation: The innermost bracket is evaluated first, since it covers only variable b it is as good as not using brackets. echo $i. B. Use Variable as Function Name in PHP Declaring a function with a variable but arbitrary name like this is not possible without getting your hands dirty with eval() or include() . For Example: Suppose if you have a variable $a and you want to make it dynamic variable, then you must use $(Dollar) sign before $a. sample(); Hello world!, the variable Explanation: One must keep in mind that variable names in PHP must start with a letter or underscore and should not start with Example: Suppose you have a variable called $var. function sample($i) DEFINE makes a constant, and constants are global and can be used anywhere. In PHP, variables start with _____? PHP MCQ Questions and Answers - Programming Site [client] max_allowed_packet=10M. ","; A variable name must start with a letter or underscore (_) character. A Hypertext Preprocessor B Pretext Hypertext Processor C Preprocessor Home Page D Personal Home Page 3. 11,11,11 DEFINE vs Variable in PHP - Stack Overflow 10. The first character after the dollar sign ( $) must be a letter ( a-z) or the underscore ( _ ). for declaring a variable. ?>. ?>. How To Define PHP Variable? Declare Variable in PHP - Tutorialdeep php multiple choice questions and answers, PHP MCQ Multiple Choice Questions and Answers Basics Part 2, PHP MCQ Multiple Choice Questions and Answers Basics Part 3, PHP Questions and Answers Functions Part 1, PHP Questions and Answers Functions Part 2, PHP Questions and Answers Arrays Part 1, PHP Questions and Answers Arrays Part 2, PHP Questions and Answers Arrays Part 3, PHP Questions and Answers Arrays Part 4, PHP Questions and Answers Object-Oriented OOP Part 1, PHP Questions and Answers Object-Oriented OOP Part 2, PHP Questions and Answers Object-Oriented OOP Part 3, PHP Questions and Answers String Part 1, PHP Questions and Answers String Part 2, PHP Questions and Answers Regular Expressions, PHP Questions and Answers Exception Handling. static $x; It is created the moment you first assign a value to To PHP declare variable dynamic, you need to call a variable inside a variable. echo $x; Example: PHP <?php $a = 'hello'; $$a = 'World'; //$ ($a) is equals to $ (hello) echo $hello; //$hello is World i.e. Integer and Float : If a, PHP can be embedded in HTML code. Unlike in C, we can use it to get a reminder or floating-point numbers in PHP. What will be the output of the following PHP code? PHP Variables MCQ Questions With Answers - Letsfindcourse How to Use Sessions and Session Variables in PHP - Code Envato Tuts+ Explanation: A variable name can only contain alphanumeric characters and underscores in their name. These Multiple Choice Questions (MCQ) should be practiced to improve the PHP skills required for various interviews (campus interview, walk-in interview, company interview), placements, entrance exams and other competitive examinations. Home php MCQ PHP MCQ Multiple Choice Questions and Answers Basics Part 1. Your email address will not be published. You can declare or define a PHP variable using the $ (dollar) sign at the start of the name by which you call the variable. C. When the information is passed using POST methods C. outside function D. containers. For Example: If you want to assign a string value to variable $var and suppose the string value is This is my string value. D. None of the above. PHP Questions and Answers 2 | Objective MCQ Quiz PHP Global Variables - Superglobals. it. PHP is a Loosely Typed Language by which you just need to assign the data to a variable. B. short names } Difference between Include and Require in PHP. It indicates variable declaration. & (Ampersand) c. $ (Dollar . function sample() A. ","; Predict the output of the following code snippet : For a string value, you need to put a string inside a double quote. How to define a variable in PHP? echo $x % $y; non-strict requirements, and D. $_AGE18. Top 150 PHP Multiple-Choice Questions (MCQs) and Answers - Includehelp.com Note: Unlike other programming languages, PHP has no command echo $i; php_value session.auto_start 1 PHP MCQ (Multiple Choice Questions) - javatpoint C. $_GET function sample($i) What does sprintf () function do in PHP? PHP Variables - javatpoint All its properties and methods go inside the braces: A. letter 11. 5, 202010 PHP Questions and Answers | Objective MCQ Quiz What will be the output of the following PHP code? However, numbers can only be used from the second position of the variable name. echo $i. it prints the output of program it sends output to a variable converting into string On the other hand, if you don't have access to the php.ini file, and you're using the Apache web server, you could also set this variable using the .htaccess file. In the example above, notice that we did not have to tell PHP which data type the variable is. The rest of the alphabet is added to the string abc in two steps. 1. 10,24,10 What will be the output of the following PHP code? myTest(); 1. echo "$z"; A variable declared _____ has a GLOBAL SCOPE? A class is defined by using the class keyword, followed by the name of the class and a pair of curly braces ({}). to output data to the screen in the next chapter. 2. 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The output will print the small letter variable value. D. None Of the Above. How to Check and Set Max_Allowed_Packet MySQL Variable sample($i); PHP Variables A variable can have a short name (like x and y) or a more descriptive name (age, carname, total_volume). How to check if a variable is NULL in PHP? Explanation: Variables are "containers" for storing information. adding a string to an integer without causing an error. Explanation: Variable z will store 1 + 2 because 1 + 2 is given in double-quotes. A ___________ is a name or an identifier for a simple value. There is no keyword for declaring a local scope. # (Hash) b. A variable declared _____ has a LOCAL SCOPE? 3. C. $AGE18 echo $i. I think based on what you're trying to do, you'll want to store an anonymous function in that variable instead (use create_function() if you're not on PHP 5.3+): } PHP is used to manage dynamic content, databases, session tracking, even build entire e-commerce sites. Required fields are marked *. D. 10,10,10, Explanation: 10,11,10 the output of the following code snippet, 18. After you assign a value to PHP variable, PHP automatically converts the variable to the correct data type. ?>, A. echo ($a % ($b) + $c); For Example: If there are two variables, first is $abc and second is $Abc. var_dump() function can be used for the simple output of variables, which not only shows the content of the variables but also their data types. 14. 15. Now, if you use camel case for one variable and another variable without camel case. 15. Because a variable name cannot start with a number. $_AGE C. numbers Think of variables as containers for storing data. Now, if you use numeric value 10 for $abc and 20 for $Abc as given below: Here, you have given $abc to echo the value of the output. 1. The characters valid for this name are restricted. B. inside function $_GLOBAL PHP MCQ 1) PHP stands for - Hypertext Preprocessor Pretext Hypertext Preprocessor Personal Home Processor None of the above Show Answer Workspace 2) Who is known as the father of PHP? 10.5. In this way, a page can primarily be written in HTML and at the same time supplemented by, Comments are lines of text that only appear in the code and are not executed by the PHP interpreter. ?>, A. Explanation: Depending on the scopes, PHP has three variable scopes: Local, Global and static variable scope. D. All of the above. Since the data types are not set in a strict sense, you can do things like These Multiple Choice Questions (mcq) should be practiced to improve the PHP skills required for various interviews (campus interview, walk-in interview, company interview), placements, entrance exams and other competitive examinations. C. Both A and B define multiple variables in one line php Code Example D. None of the above, Explanation: A variable can have long descriptive names (like $factorial, $even_nos) or short names (like $n or $f or $x). All variables inside functions are local by default (even a variable with the same name as another global variable). 8. GLOBAL $i; How many variable scope are there in php? No uses in PHP. $b = 2; By default, it's set to 0, and you can set it to 1 to enable the auto startup functionality. $x = 1; Use d ollar sign with all the variable of different data types. { Comment * document.getElementById("comment").setAttribute( "id", "aa04061740e5846e8aee03f1e64b5a91" );document.getElementById("b4ee39581b").setAttribute( "id", "comment" ); In this tutorial, we are going to see What is a Web Worker in JavaScript? D. 201020, Explanation: 201010 the output of the following code snippet, A. If you wish to learn more about PHP language and PHP MCQs, you can check notes, mock tests, and previous years' question papers. data type declarations in the PHP Functions chapter. Lets say this file is saved as "c:/mysql.cnf" which sets the value for max_allowed_packet for client as 10MB. How to add a new line within echo in PHP? The final dynamic variable will be ${$a}. 21. In Users Computer. 1. A. . What will be the output of the following PHP code? As opposed to many other programming languages, PHP does not offer the possibility of permanently defining the data type of a variable. 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Explanation: A variable declared inside a function has a LOCAL SCOPE. $i=10; C. no numbers Web Worker allows us to, PHP MCQ Multiple Choice Questions and Answers Basics Part 1, Variables are containers that can store specified or determined values, similar to variables in mathematics. Your email address will not be published. echo $i+$i,","; PHP defines a variable on its first use. In PHP, the variable name starts with: a. Your email address will not be published. Explanation: The innermost bracket is evaluated first since it covers only variable B, it is as good as not using brackets, then $b- $c action will be performed. GLOBAL $i; $var1=10; There can be possible specification of integers in decimal(base 10), hexadecimal(base 16 with prefix 0x) or octal(base 8 with prefix 0). Variables in PHP | How to declare & Initialize variable in PHP - EDUCBA 15. Same things apply to all other data types of PHP. PHP | Variables - GeeksforGeeks numbers. B. PHP is a general-purpose server-side scripting language geared towards web development. This can be useful for somewhat when you want to save your time with the output value and the value to print. B. B. storage Note: When you assign a text value to a variable, put quotes around the value. echo $number; // Output: 10 ?> This collection of PHP Multiple Choice Questions and Answers (MCQs): Quizzes & Practice Tests with Answer focuses on PHP basic. A. alphanumeric characters $18AGE PHP MCQ (Multiple Choice Questions) - javatpoint A. outside program sample($i); A PHP declare a variable is a case sensitive. In this example, an array is defined, which contains three possible colors. . 1. Each variable can potentially contain any data type and change it at any time. 7. C. 10,20,20 You can use negative as well as positive with the specification too. In PHP, variables Read More Example : Operations Below are a few small examples of how to deal with the various data types. Tutorials, references, and examples are constantly reviewed to avoid errors, but we cannot warrant full correctness of all content. This can be done by using the other variable inside another $(dollar) sign. Here, The changes we made to $assign will not affect the original variable $z. PHP MCQ (Multiple Choice Questions) with examples, php file, php session, php date, php array, php form, functions, time, xml, ajax, php mysql, regex, string, oop . They are used to improve the. Variables are "containers" for storing information. D. None of the above, Explanation: $_SERVER : Will give the information about all the predefined variables to know the server information. 4. Which sign is used to declare variables in PHP? 9. 10,11,11 $hello is new variable with value 'World' ?> Output: 16. How to get a variable name as a string in PHP? $b = 2; Web Worker allows us to, This collection of PHP Multiple Choice Questions and Answers (MCQs): Quizzes & Practice Tests with Answer focuses on PHP basic. Use dollar sign with all the variable of different data types. PHP Variables - W3Schools However, it is also possible to place variables, Which areas of application or scopes exist and what effects this has on access to variables? ?<. $i=10; PHP OOP Classes and Objects - W3Schools C. 10,11,10 What does PHP stand for? $x will hold the value How to check if a variable is a float in PHP? PHP MCQ - Multiple Choice Questions and Answers - StackHowTo the data type expected when declaring a function, and by enabling the strict requirement, it will throw a "Fatal Mathematical operations on integer variables (can be applied identically to floats): An example for the use of truth values or Booleans: In this example, strings are introduced. Explanation: % is the modulo operator. How to print all defined variables and values in PHP, PHP References: When to Use Them, and How They Work, How to return a variable by name from a function in PHP, What is the difference between == and === in PHP. In PHP 7, type declarations were added. session.auto_start = 1. @ & $ _ Answer: C) $ Explanation: The dollar ($) sign is used to declare variables in PHP. B. Any variables declared in PHP must begin with a _____? $i+=2; Which of the following is NOT a superglobal variable ? Drek Kolkevi List Barely Rasmus Lerdrof None of the above Show Answer Workspace 3) Variable name in PHP starts with - ! A variable can have a short name (like x and y) or a more descriptive name (age, carname, total_volume). How to Define a Variable in PHP - Tutorial Republic Solved examples with detailed answer description, explanation are given and it would be easy to understand. In PHP, a variable starts with the $ sign, followed by the name of the variable: After the execution of the statements above, the variable A. decimal The PHP echo statement is often used to output data to the screen. GLOBAL $i; PHP variables are case-sensitive. Define a Class. B. underscore D. $_POST, Explanation: $_GLOBAL is NOT a superglobal variable, 17. You can set the value of max_allowed_packet, using mysql_options () API as follows: First create your option file with content. Predict the output of the following code snippet : 19. A. These values can be of different types, so-called data types., The echo function can be used to output strings in PHP. With simple and logical explanations to prepare for tests and interviews, using mysql_options ( ) < href=... Global & dollar ; z '' ; a variable on its first use a function has a global?. Use dollar sign with all the variable name as another global variable ) defined in one function are not for! 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Also can not be redefined, which variables can be underscores how to define a variable in php mcq letters, or numbers for tests and.. D. 201020, explanation: Depending on the scopes, PHP can be different. Using the other variable inside another $ ( dollar ) sign PHP variable ;... Is used to assign the data type to the correct data type of a specific class in?! Not offer the possibility of permanently defining the data type of a specific in! Use dynamic variable names, called variable variables is defined, which can! Static variable scope are there in PHP? variable on its value to $ assign will be! _ ) other data types of PHP not offer the possibility of permanently defining the data to screen... At any time correctness of all content within echo in PHP? screen. And the value variables are ________ for storing information i+ & dollar ; x = 1 ; use ollar... We made to $ assign will how to define a variable in php mcq be redefined, which contains three possible colors quote double! 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