Can PHP variables not be capitalized?

php variables can be capitalized. PHP variable rules include: 1. Variables start with a $ symbol, followed by the name of the variable; 2. Variable names must start with letters or underscore characters; 3. Variable names can only contain Alphanumeric and underscore; 4. Variable names cannot contain spaces; 5. Variable names are case-sensitive.

#The operating environment of this article: Windows 7 system, PHP version 7.4, Dell G3 computer.

php Can’t capitalize variables?

php variables can be in uppercase letters.

Variables can have very short names (such as x and y) or more descriptive names (such as age, carname, totalvolume).

Variables are "containers" used to store information.

PHP variable rules:

• Variables start with the $ symbol, followed by the name of the variable

• Variable names must start with letters or underscore characters

• Variable names can only contain letters, numbers and underscores (A-z, 0-9 and _)

• Variable names cannot contain spaces

• Variable names are case-sensitive ($y and $Y are two different variables)

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