PHP TutorialLesson 6Free preview

PHP Variables

This lesson is part of PHP · All levels

Summary

A variable is a named container for storing data in PHP, always written with a dollar sign on the front. This lesson discusses naming rules, the nature of dynamic data types, and the difference between variables and constants. Since PHP doesn't require type declarations, you just give them a value and PHP determines the type itself.

Key points

The variable is always preceded by the symbol $, for example $name
The name of the variable may contain letters, numbers, and lower case, but it must not precede a number
PHP has a dynamic data type so the type follows the stored values
The variable only keeps one value at a time

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