What is PHP function with examples?

What is a PHP function?

PHP function is a piece of code that can be reused many times. It can take input as argument list and return value. There are thousands of built-in functions in PHP. In PHP, we can define Conditional function, Function within Function and Recursive function also.

What are functions in PHP explain with a simple example?

The table below shows the common PHP numeric functions

Function Description Output
rand Used to generate a random number. Random number
round Round off a number with decimal points to the nearest whole number. 3
sqrt Returns the square root of a number 10
cos Returns the cosine 0.52532198881773

WHAT IS function and its types in PHP?

PHP provides us with two major types of functions: Built-in functions : PHP provides us with huge collection of built-in library functions. … User Defined Functions : Apart from the built-in functions, PHP allows us to create our own customised functions called the user-defined functions.

What are some examples of PHP?

The Best PHP Examples

  • Websites and web applications (server-side scripting)
  • Command line scripting.
  • Desktop (GUI) applications.
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What is PHP full form?

PHP originally stood for Personal Home Page, but it now stands for the recursive initialism PHP: Hypertext Preprocessor. PHP code is usually processed on a web server by a PHP interpreter implemented as a module, a daemon or as a Common Gateway Interface (CGI) executable.

How many types of functions are there in PHP?

Types of Functions in PHP. There are two types of functions as: Internal (built-in) Functions. User Defined Functions.

What is PHP call function?

A function is a self-contained block of code that performs a specific task. PHP has a huge collection of internal or built-in functions that you can call directly within your PHP scripts to perform a specific task, like gettype() , print_r() , var_dump , etc.

Why do we use functions?

Functions provide a couple of benefits: Functions allow the same piece of code to run multiple times. Functions break long programs up into smaller components. Functions can be shared and used by other programmers.

What is function explain how do you define and use function in PHP?

Introduction. PHP has a large number of built-in functions such as mathematical, string, date, array functions etc. It is also possible to define a function as per specific requirement. Such function is called user defined function. A function is a reusable block of statements that performs a specific task.

Why TRIM () function is used in PHP?

PHP: trim() function

The trim() function is used to remove the white spaces and other predefined characters from the left and right sides of a string. The string to be trimmed. Specifies the character(s) to remove. Without this remove the following ” ” an ordinary space.

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What is PHP best used for?

Although PHP is a general-purpose programming language, it is primarily used for developing dynamic web pages. Considering the availability of PHP-based content management systems such as Moodle and WordPress, PHP is the best solution for blogs, learning management systems, and e-commerce websites.

How do I write PHP code?

After saving your code file into the htdocs folder follow the below steps.

  1. Open XAMPP control panel.
  2. Start Apache and MySQL servers.
  3. Go to any browser and type localhost/filename. php in the search box.
  4. If you save your PHP code in a subfolder in htdocs, then type localhost/subfolder_name/filename.php.

What are data types in PHP?

PHP supports the following data types:

  • String.
  • Integer.
  • Float (floating point numbers – also called double)
  • Boolean.
  • Array.
  • Object.
  • NULL.
  • Resource.