Which of the following is right way to defining a function in PHP?
The declaration of a user-defined function start with the word function , followed by the name of the function you want to create followed by parentheses i.e. () and finally place your function’s code between curly brackets {} .
Which one is the correct way to define a function?
In order to call the function you must give it a name, so these are know as named functions. A function created with a function declaration can be called before it has even been declared. An anonymous function is a function that is not given a name when it is created.
What is define function in PHP?
The PHP defined() function is an inbuilt function in PHP which checks whether a constant is exists or not, in other words, defined or not. Syntax: bool defined($constant_name); Parameter: This function accepts a single parameter as mentioned above and described below.
Which of the following is the valid way to start a function in PHP?
Function names follow the same rules as other labels in PHP. A valid function name starts with a letter or underscore, followed by any number of letters, numbers, or underscores. As a regular expression, it would be expressed thus: ^[a-zA-Z_x80-xff][a-zA-Z0-9_x80-xff]*$ .
What is PHP full form?
PHP (recursive acronym for PHP: Hypertext Preprocessor ) is a widely-used open source general-purpose scripting language that is especially suited for web development and can be embedded into HTML.
Which is the right way of declaring a variable in PHP?
Rules for PHP variables:
- A variable starts with the $ sign, followed by the name of the variable.
- 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 _ )
What are the two main types of functions?
There are two basic types of functions: built-in functions and user defined functions.
What is called function?
A function is a group of statements that together perform a task. … A function declaration tells the compiler about a function’s name, return type, and parameters. A function definition provides the actual body of the function. The C standard library provides numerous built-in functions that your program can call.
Which function will you choose to join two words?
1. Which function will you choose to join two words? The strcat() function is used for concatenating two strings, appends a copy of the string.
What is PHP function with examples?
A function is a piece of code which takes one more input in the form of parameter and does some processing and returns a value. … You already have seen many functions like fopen() and fread() etc. They are built-in functions but PHP gives you option to create your own functions as well.
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 are the features of PHP?
Features of PHP
- Features of php. It is most popular and frequently used world wide scripting language, the main reason of popularity is; It is open source and very simple. …
- Simple. …
- Interpreted. …
- Faster. …
- Open Source. …
- Platform Independent. …
- Case Sensitive. …
- Error Reporting.