Note: Namespace names are case-insensitive. Note: The Namespace name PHP , and compound names starting with this name (like PHP\Classes ) are reserved for internal language use and should not be used in the userspace code.

Are PHP namespaces case-sensitive?

Note: Namespace names are case-insensitive. Note: The Namespace name PHP , and compound names starting with this name (like PHP\Classes ) are reserved for internal language use and should not be used in the userspace code.

What is meaning of case-sensitive in PHP?

Variables in PHP are represented by a dollar sign followed by the name of the variable. The variable name is case-sensitive. Variable names follow the same rules as other labels in PHP. A valid variable name starts with a letter or underscores, followed by any number of letters, numbers, or underscores.

What does namespace mean in PHP?

A namespace is a hierarchically labeled code block holding a regular PHP code. A namespace can contain valid PHP code. Namespace affects following types of code: classes (including abstracts and traits), interfaces, functions, and constants. Namespaces are declared using the namespace keyword.

How do namespaces work in PHP?

In short, a namespaces in PHP is placed at the top of a file, and designates that all the code in that file will be placed in a namespace. As we’ll go into in a bit more detail, this namespaces affects classes, interfaces, functions, and constants. It does no affect variables.

What means case-sensitive?

Definition of case-sensitive : requiring correct input of uppercase and lowercase letters Having the Caps Lock key on accidentally can also lead to a frustrating series of “wrong password” alerts when trying to use a case-sensitive password for your office network or Internet provider.—

Is PHP case-sensitive example?

PHP is partially case-sensitive. PHP constructs, function names, class names are case-insensitive, whereas variables are case-sensitive.

What are namespaces useful for?

Namespaces are used to organize code into logical groups and to prevent name collisions that can occur especially when your code base includes multiple libraries. All identifiers at namespace scope are visible to one another without qualification.

What means namespace?

In computing, a namespace is a set of signs (names) that are used to identify and refer to objects of various kinds. A namespace ensures that all of a given set of objects have unique names so that they can be easily identified.

What is the purpose of namespace?

A namespace is a declarative region that provides a scope to the identifiers (the names of types, functions, variables, etc) inside it. Namespaces are used to organize code into logical groups and to prevent name collisions that can occur especially when your code base includes multiple libraries.