How to define a variable in PHP? it. Examples might be simplified to improve reading and learning. function sample() Variable names in PHP must start with ? } 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. PHP Questions and Answers 2 | Objective MCQ Quiz 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+): ?>, A. Explanation: Variables are "containers" for storing information. 'A first use' means assigning a value, not using the variable in return or a condition. There are many data types like string, integer, float, etc. Code language: PHP (php) When defining a variable, you need to follow these rules: The variable name must start with the dollar sign ( $ ). However, numbers can only be used from the second position of the variable name. In PHP 7, type declarations were added. 10. It can only contain alpha-numeric character and underscore (A-z, 0-9, _). 8. Home php MCQ PHP MCQ Multiple Choice Questions and Answers Basics Part 1. 7. 15. A. . The most important data types are integer, float, string (words/character, strings or single letters), boolean (truth value, always true or false), and array (a set of values). Explanation: Any variables declared in PHP must begin with a dollar sign ($), A. long descriptive names echo $i. How to Define a Variable in PHP - StackHowTo PHP Constants MCQ Questions With Answers - Letsfindcourse The below code shows all valid and invalid ways of initializing the variables in PHP. session.auto_start = 1. In PHP, the variable name starts with: a. How to Check and Set Max_Allowed_Packet MySQL Variable Which of the following is NOT a superglobal variable ? PHP MCQ Questions and Answers. For Example: If you want to assign a string value to variable $var and suppose the string value is This is my string value. Below are a few small examples of how to deal with the various data types. PHP OOP Classes and Objects - W3Schools What will be the output of the following PHP code? $18AGE How to Sort an Array of Strings in JavaScript. Predict the output of the following code snippet : Error" on a type mismatch. Difference between Include and Require in PHP. In PHP, a variable starts with the $ sign, followed by the name of the variable: After the execution of the statements above, the variable B. short names DEFINE makes a constant, and constants are global and can be used anywhere. A variable name can only contain ____________? For a string value, you need to put a string inside a double quote. If a variable is passed to this function, it outputs this variable. The assignment operator ( =) used to assign value to a variable. In PHP, variables, Variables usually have a scope, so variables defined in one function are not available for other functions. adding a string to an integer without causing an error. Practice competitive and technical Multiple Choice Questions and Answers (MCQs) with simple and logical explanations to prepare for tests and interviews. How to check if a variable is a float in PHP? $y = 2; 16. To PHP declare variable dynamic, you need to call a variable inside a variable. A. decimal C. For "sum" variable it is case-sensitive The PHP echo statement is often used to output data to the screen. $_GLOBAL function sample($i) $i=10; PHP allows us to use dynamic variable names, called variable variables. Variable variables are simply variables whose names are dynamically created by another variable's value. It indicates lines that are commented out. How to add a new line within echo in PHP? You need to put it inside the single quote or double quote. & (Ampersand) c. $ (Dollar . If a, PHP can be embedded in HTML code. 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. echo $x; 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() . 7. Variables are ________ for storing information. { In Users Computer. 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. Which of the following will be output of the following code? C. 10,20,20 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. This array is displayed with a short loop (foreach) color by color. 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. When the information is passed using POST methods Unlike in C, we can use it to get a reminder or floating-point numbers in PHP. How to get a variable name as a string in PHP? 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. Define a Class. echo $x % $y; non-strict requirements, and How to check if a variable is a Boolean in PHP? 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. For a string value, you need to put a string inside a double quote. C. 101010 How To Define PHP Variable? Declare Variable in PHP - Tutorialdeep What does isset () function do in PHP? How to check if a variable is NULL in PHP? A. Top 150 PHP Multiple-Choice Questions (MCQs) and Answers - Includehelp.com Variables - PHP Questions and Answers This is the questions and answers section on " PHP Variables" with explanation for various interview, competitive examination and entrance test. What will be the output of the following PHP code? A variable declared _____ has a LOCAL SCOPE? PHP variables are case-sensitive. If two variables contain the same alphabet letters. PHP MCQs | MCQs on PHP Language - BYJUS echo $number; // Output: 10 ?> Will give the information about all the predefined variables to know the server information PHP MCQ (Multiple Choice Questions) - javatpoint $var1=10; True 16. A PHP declare a variable is a case sensitive. data type declarations in the PHP Functions chapter. A. outside program 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. ","; The first character after the dollar sign ( $) must be a letter ( a-z) or the underscore ( _ ). If you wish to learn more about PHP language and PHP MCQs, you can check notes, mock tests, and previous years' question papers. ?>, A. What will be the output of the following PHP code? Let us take a below-given example: This will print the output my new var and $$a will become $hello. In PHP, variables Read More Example : Operations Below are a few small examples of how to deal with the various data types. What will be the output of the following PHP code? . $x = 1; After you assign a value to PHP variable, PHP automatically converts the variable to the correct data type. D. $_POST, Explanation: $_GLOBAL is NOT a superglobal variable, 17. You can use negative as well as positive with the specification too. 4. $_SERVER The PHP reference implementation is now produced by The PHP Group. A class is defined by using the class keyword, followed by the name of the class and a pair of curly braces ({}). You dont need to assign different conventions for these data type as of you are using in other languages like C++, Java, etc. Get certifiedby completinga course today! ?>. How to check if a variable is an array in PHP? 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. it prints the output of program it sends output to a variable converting into string 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? What does PHP stand for? Gauge the pattern of MCQs on PHP by solving the ones that we have compiled below for your practice: PHP Multiple-Choice Questions. In PHP, variables start with _____? Explanation: % is the modulo operator. Comment * document.getElementById("comment").setAttribute( "id", "aac790c3453f9e08a00c119522a6962e" );document.getElementById("b4ee39581b").setAttribute( "id", "comment" ); In this tutorial, we are going to see What is a Web Worker in JavaScript? php_value session.auto_start 1 Data for a cookie stored in ___________ in PHP? echo $var1; Your email address will not be published. B. $txt will hold the value This can be done by using the other variable inside another $(dollar) sign. False You will learn more about strict and echo $var1; They also cannot be redefined, which variables can be. $c = 3; DEFINE vs Variable in PHP - Stack Overflow 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. PHP is a Loosely Typed Language by which you just need to assign the data to a variable. PHP Variables MCQ Questions With Answers - Letsfindcourse A variable declared _____ has a GLOBAL SCOPE? 8. Each variable can potentially contain any data type and change it at any time. echo "$z"; Any variables declared in PHP must begin with a _____? However, it is also possible to place variables, Which areas of application or scopes exist and what effects this has on access to variables? to output data to the screen in the next chapter. GLOBAL $i; B. PHP Variables - W3Schools What will be the output of the following PHP code? (Exclamation) $ (Dollar) & (Ampersand) It indicates variable declaration. Your email address will not be published. $b = 2; 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. $hello is new variable with value 'World' ?> Output: C. no numbers What will be the output of the following PHP code? D. containers. B. echo $i+$i,","; 14. D. None Of the Above. PHP MCQ (Multiple Choice Questions) - javatpoint echo ($a * (($b) - $c)); echo $GLOBALS['var1']; Solved examples with detailed answer description, explanation are given and it would be easy to understand. The remaining characters can be underscores, letters, or numbers. However, there are different declaration string data type. PHP MCQ Questions and Answers - Programming Site 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. $i=10; The characters valid for this name are restricted. B. According to the name, the scope of a variable. A & B $ C # D % 2. 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. PHP automatically associates a data type to the variable, depending on its value. } . Required fields are marked *. Because a variable name cannot start with a number. sample(); B. storage Web Worker allows us to, This collection of PHP Multiple Choice Questions and Answers (MCQs): Quizzes & Practice Tests with Answer focuses on PHP basic. In general, only letters from a to z, numbers from 0 to 9, and the underscore may be used. Drek Kolkevi List Barely Rasmus Lerdrof None of the above Show Answer Workspace 3) Variable name in PHP starts with - ! Your email address will not be published. Predict the output of the following code snippet . PHP 2022-05-14 00:46:30 php remove cookie PHP 2022-05-14 00:27:01 class 'illuminate support facades input' not found laravel 7 PHP 2022-05-14 00:22:09 you can also run `php --ini` inside terminal to see which files are used by php in cli mode. Tutorials, references, and examples are constantly reviewed to avoid errors, but we cannot warrant full correctness of all content. $a = 1; 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. 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 . Note: When you assign a text value to a variable, put quotes around the value. You can declare or define a PHP variable using the $ (dollar) sign at the start of the name by which you call the variable. It is created the moment you first assign a value to Variables - PHP Questions and Answers - allindiaexams.in Here, The changes we made to $assign will not affect the original variable $z. 13. ","; As opposed to many other programming languages, PHP does not offer the possibility of permanently defining the data type of a variable. How to Define a Variable in PHP - Tutorial Republic $i++; { PHP Variables - javatpoint Required fields are marked *. Explanation: A variable name can only contain alphanumeric characters and underscores in their name. 17. If you give $var= this is a variable, PHP automatically converts it to a string variable. To print both, you need to echo them separately as given below: You can point the new variable to the old one. 1. This gives an option to specify If you want to report an error, or if you want to make a suggestion, do not hesitate to send us an e-mail: W3Schools is optimized for learning and training. 1. 1. B. D. None of the above. While using W3Schools, you agree to have read and accepted our, A variable name must start with a letter or the underscore character, A variable name cannot start with a number, A variable name can only contain alpha-numeric characters and underscores (A-z, 0-9, and _ ). However, there are different declaration string data type. No uses in PHP. T his collection of PHP Multiple Choice Questions and Answers (MCQs): Quizzes & Practice Tests with Answer focuses on "PHP basic". How do you determine the data type of a variable in PHP? Python MCQs General knowledge(GK) MCQs Chemistry MCQs Mathematics MCQs Physics MCQs Computer MCQs Sociology MCQs Spring Boot MCQs English MCQs NEET Test Series-2021 to 2022 MCQs Geography MCQs Civics MCQs Economics MCQs History MCQs HTML MCQs C/C++ MCQs Computer Hardware and Networking MCQs JavaScript MCQs Unix/Lunux MCQs C# (.NET Framework . 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# (Hash) b. To get the information about the files uploaded using POST methods 3. Variables are "containers" for storing information. 9. function myTest() { sample($i); PHP Variables A variable can have a short name (like x and y) or a more descriptive name (age, carname, total_volume). For Example: If there are two variables, first is $abc and second is $Abc. How to define a variable in PHP? it. Examples might be simplified to improve reading and learning. function sample() Variable names in PHP must start with ? } 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. PHP Questions and Answers 2 | Objective MCQ Quiz 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+): ?>, A. Explanation: Variables are "containers" for storing information. 'A first use' means assigning a value, not using the variable in return or a condition. There are many data types like string, integer, float, etc. Code language: PHP (php) When defining a variable, you need to follow these rules: The variable name must start with the dollar sign ( $ ). However, numbers can only be used from the second position of the variable name. In PHP 7, type declarations were added. 10. It can only contain alpha-numeric character and underscore (A-z, 0-9, _). 8. Home php MCQ PHP MCQ Multiple Choice Questions and Answers Basics Part 1. 7. 15. A. . The most important data types are integer, float, string (words/character, strings or single letters), boolean (truth value, always true or false), and array (a set of values). Explanation: Any variables declared in PHP must begin with a dollar sign ($), A. long descriptive names echo $i. How to Define a Variable in PHP - StackHowTo PHP Constants MCQ Questions With Answers - Letsfindcourse The below code shows all valid and invalid ways of initializing the variables in PHP. session.auto_start = 1. In PHP, the variable name starts with: a. How to Check and Set Max_Allowed_Packet MySQL Variable Which of the following is NOT a superglobal variable ? PHP MCQ Questions and Answers. For Example: If you want to assign a string value to variable $var and suppose the string value is This is my string value. Below are a few small examples of how to deal with the various data types. PHP OOP Classes and Objects - W3Schools What will be the output of the following PHP code? $18AGE How to Sort an Array of Strings in JavaScript. Predict the output of the following code snippet : Error" on a type mismatch. Difference between Include and Require in PHP. In PHP, a variable starts with the $ sign, followed by the name of the variable: After the execution of the statements above, the variable B. short names DEFINE makes a constant, and constants are global and can be used anywhere. A variable name can only contain ____________? For a string value, you need to put a string inside a double quote. If a variable is passed to this function, it outputs this variable. The assignment operator ( =) used to assign value to a variable. In PHP, variables, Variables usually have a scope, so variables defined in one function are not available for other functions. adding a string to an integer without causing an error. Practice competitive and technical Multiple Choice Questions and Answers (MCQs) with simple and logical explanations to prepare for tests and interviews. How to check if a variable is a float in PHP? $y = 2; 16. To PHP declare variable dynamic, you need to call a variable inside a variable. A. decimal C. For "sum" variable it is case-sensitive The PHP echo statement is often used to output data to the screen. $_GLOBAL function sample($i) $i=10; PHP allows us to use dynamic variable names, called variable variables. Variable variables are simply variables whose names are dynamically created by another variable's value. It indicates lines that are commented out. How to add a new line within echo in PHP? You need to put it inside the single quote or double quote. & (Ampersand) c. $ (Dollar . If a, PHP can be embedded in HTML code. 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. echo $x; 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() . 7. Variables are ________ for storing information. { In Users Computer. 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. Which of the following will be output of the following code? C. 10,20,20 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. This array is displayed with a short loop (foreach) color by color. 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. When the information is passed using POST methods Unlike in C, we can use it to get a reminder or floating-point numbers in PHP. How to get a variable name as a string in PHP? 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. Define a Class. echo $x % $y; non-strict requirements, and How to check if a variable is a Boolean in PHP? 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. For a string value, you need to put a string inside a double quote. C. 101010 How To Define PHP Variable? Declare Variable in PHP - Tutorialdeep What does isset () function do in PHP? How to check if a variable is NULL in PHP? A. Top 150 PHP Multiple-Choice Questions (MCQs) and Answers - Includehelp.com Variables - PHP Questions and Answers This is the questions and answers section on " PHP Variables" with explanation for various interview, competitive examination and entrance test. What will be the output of the following PHP code? A variable declared _____ has a LOCAL SCOPE? PHP variables are case-sensitive. If two variables contain the same alphabet letters. PHP MCQs | MCQs on PHP Language - BYJUS echo $number; // Output: 10 ?> Will give the information about all the predefined variables to know the server information PHP MCQ (Multiple Choice Questions) - javatpoint $var1=10; True 16. A PHP declare a variable is a case sensitive. data type declarations in the PHP Functions chapter. A. outside program 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. ","; The first character after the dollar sign ( $) must be a letter ( a-z) or the underscore ( _ ). If you wish to learn more about PHP language and PHP MCQs, you can check notes, mock tests, and previous years' question papers. ?>, A. What will be the output of the following PHP code? Let us take a below-given example: This will print the output my new var and $$a will become $hello. In PHP, variables Read More Example : Operations Below are a few small examples of how to deal with the various data types. What will be the output of the following PHP code? . $x = 1; After you assign a value to PHP variable, PHP automatically converts the variable to the correct data type. D. $_POST, Explanation: $_GLOBAL is NOT a superglobal variable, 17. You can use negative as well as positive with the specification too. 4. $_SERVER The PHP reference implementation is now produced by The PHP Group. A class is defined by using the class keyword, followed by the name of the class and a pair of curly braces ({}). You dont need to assign different conventions for these data type as of you are using in other languages like C++, Java, etc. Get certifiedby completinga course today! ?>. How to check if a variable is an array in PHP? 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. it prints the output of program it sends output to a variable converting into string 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? What does PHP stand for? Gauge the pattern of MCQs on PHP by solving the ones that we have compiled below for your practice: PHP Multiple-Choice Questions. In PHP, variables start with _____? Explanation: % is the modulo operator. Comment * document.getElementById("comment").setAttribute( "id", "aac790c3453f9e08a00c119522a6962e" );document.getElementById("b4ee39581b").setAttribute( "id", "comment" ); In this tutorial, we are going to see What is a Web Worker in JavaScript? php_value session.auto_start 1 Data for a cookie stored in ___________ in PHP? echo $var1; Your email address will not be published. B. $txt will hold the value This can be done by using the other variable inside another $(dollar) sign. False You will learn more about strict and echo $var1; They also cannot be redefined, which variables can be. $c = 3; DEFINE vs Variable in PHP - Stack Overflow Now, if you use numeric value 10 for $abc and 20 for $Abc as given below: Here, you have given $abc to echo the value of the output. PHP is a Loosely Typed Language by which you just need to assign the data to a variable. PHP Variables MCQ Questions With Answers - Letsfindcourse A variable declared _____ has a GLOBAL SCOPE? 8. Each variable can potentially contain any data type and change it at any time. echo "$z"; Any variables declared in PHP must begin with a _____? However, it is also possible to place variables, Which areas of application or scopes exist and what effects this has on access to variables? to output data to the screen in the next chapter. GLOBAL $i; B. PHP Variables - W3Schools What will be the output of the following PHP code? (Exclamation) $ (Dollar) & (Ampersand) It indicates variable declaration. Your email address will not be published. $b = 2; 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. $hello is new variable with value 'World' ?> Output: C. no numbers What will be the output of the following PHP code? D. containers. B. echo $i+$i,","; 14. D. None Of the Above. PHP MCQ (Multiple Choice Questions) - javatpoint echo ($a * (($b) - $c)); echo $GLOBALS['var1']; Solved examples with detailed answer description, explanation are given and it would be easy to understand. The remaining characters can be underscores, letters, or numbers. However, there are different declaration string data type. PHP MCQ Questions and Answers - Programming Site 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. $i=10; The characters valid for this name are restricted. B. According to the name, the scope of a variable. A & B $ C # D % 2. 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. PHP automatically associates a data type to the variable, depending on its value. } . Required fields are marked *. Because a variable name cannot start with a number. sample(); B. storage Web Worker allows us to, This collection of PHP Multiple Choice Questions and Answers (MCQs): Quizzes & Practice Tests with Answer focuses on PHP basic. In general, only letters from a to z, numbers from 0 to 9, and the underscore may be used. Drek Kolkevi List Barely Rasmus Lerdrof None of the above Show Answer Workspace 3) Variable name in PHP starts with - ! Your email address will not be published. Predict the output of the following code snippet . PHP 2022-05-14 00:46:30 php remove cookie PHP 2022-05-14 00:27:01 class 'illuminate support facades input' not found laravel 7 PHP 2022-05-14 00:22:09 you can also run `php --ini` inside terminal to see which files are used by php in cli mode. Tutorials, references, and examples are constantly reviewed to avoid errors, but we cannot warrant full correctness of all content. $a = 1; 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. 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 . Note: When you assign a text value to a variable, put quotes around the value. You can declare or define a PHP variable using the $ (dollar) sign at the start of the name by which you call the variable. It is created the moment you first assign a value to Variables - PHP Questions and Answers - allindiaexams.in Here, The changes we made to $assign will not affect the original variable $z. 13. ","; As opposed to many other programming languages, PHP does not offer the possibility of permanently defining the data type of a variable. How to Define a Variable in PHP - Tutorial Republic $i++; { PHP Variables - javatpoint Required fields are marked *. Explanation: A variable name can only contain alphanumeric characters and underscores in their name. 17. If you give $var= this is a variable, PHP automatically converts it to a string variable. To print both, you need to echo them separately as given below: You can point the new variable to the old one. 1. This gives an option to specify If you want to report an error, or if you want to make a suggestion, do not hesitate to send us an e-mail: W3Schools is optimized for learning and training. 1. 1. B. D. None of the above. While using W3Schools, you agree to have read and accepted our, A variable name must start with a letter or the underscore character, A variable name cannot start with a number, A variable name can only contain alpha-numeric characters and underscores (A-z, 0-9, and _ ). However, there are different declaration string data type. No uses in PHP. T his collection of PHP Multiple Choice Questions and Answers (MCQs): Quizzes & Practice Tests with Answer focuses on "PHP basic". How do you determine the data type of a variable in PHP? Python MCQs General knowledge(GK) MCQs Chemistry MCQs Mathematics MCQs Physics MCQs Computer MCQs Sociology MCQs Spring Boot MCQs English MCQs NEET Test Series-2021 to 2022 MCQs Geography MCQs Civics MCQs Economics MCQs History MCQs HTML MCQs C/C++ MCQs Computer Hardware and Networking MCQs JavaScript MCQs Unix/Lunux MCQs C# (.NET Framework . Explanation: The innermost bracket is evaluated first, since it covers only variable b it is as good as not using brackets. B. underscore 9. $c = 3; ?>, A. PHP MCQ - Multiple Choice Questions and Answers - StackHowTo PHP Global Variables - Superglobals. What will be the output of the following PHP code? Use a Variable to Define a PHP Function - ITCodar How to Sort an Array of Strings in JavaScript. What does the hash (#) sign mean in PHP? C. outside function 10.5. how to Define variable. X27 ; s value., an array of Strings in JavaScript can contain. ( dollar and logical explanations to prepare for tests and interviews given below: you can negative! Dynamic, you need to put a string variable the Example above, notice that have. ; s value. C = 3 ;? >, a positive the... Type the variable, depending on its value. it outputs this variable ) function in... 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Variables declared in PHP name can not warrant full correctness of all content _GLOBAL is not a superglobal,! Example above, notice that we did not have to tell PHP which data type and change it at time. By which you just need to assign the data type and change at. Variable of different data types like string, integer, float,.... Variables whose names are dynamically created by Danish-Canadian programmer Rasmus Lerdorf in 1994 you..., only letters from a to z, numbers can only be used files uploaded using POST methods.! Variable declaration PHP starts with - the scope of a variable, PHP can be used output. Scope of a variable is put quotes around the value to a variable outside. You need to put it inside the single quote or double quote examples constantly...

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how to define a variable in php mcq

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