What are the functions of PHP?
PHP is a complete programming language and can be used for functions such as server-side scripting (using a web server to fulfill a user’s request by running a script directly on the web server to generate dynamic HTML pages) or writing desktop applications.
How do you call a function in PHP?
What is the return function in PHP?
Function-return value in PHP A function can return a value using the return statement in conjunction with a value or object. In return value function, return keyword is used to return a value from a function. In return value function, return stops the execution of the function and sends the value back to the calling code.
What is default parameter in PHP?
PHP Function Default Parameters. Default parameter can have a value if the corresponding argument is not passed when the function is called. PHP lets you create functions with optional parameters. You define an optional parameter as follows: To define default parameters for a function, add the default value after the variables.
How does substring work?
Definition and Usage. The substring() method extracts the characters from a string, between two specified indices, and returns the new sub string. This method extracts the characters in a string between “start” and “end”, not including “end” itself. If “start” is greater than “end”, this method will swap the two arguments,…
What does substring mean?
A substring is a contiguous sequence of characters within a string. For instance, “the best of” is a substring of “It was the best of times”.
What is the substring function in the SQL?
Definition and Usage. The SUBSTRING () function extracts some characters from a string.