A variable can have a short name, like x, or a more descriptive name, like carName. Rules for PHP variable names: Variables in PHP starts with a $ sign, followed by the name of the variable The variable name must begin with a letter or the underscore character A variable name can only contain alpha-numeric characters and underscores (A-z, 0-9, and _ ) A variable name should not contain spaces Variable names are case sensitive (y and Y are two different variables)
PHP
Topic: Variables
What is PHP Variables?
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