In PHP, variables are created using the $ (dollar sign) followed by the variable name. You do not need to declare the type explicitly (PHP is dynamically typed).

Variable Naming Rules:

  • Must start with $ (e.g., $myVar).
  • Can contain letters (A-Z, a-z), numbers (0-9), and underscores (_).
  • Cannot start with a number (e.g., $1name ).
  • Case-sensitive ($var and $VAR are different).

Example:

$name = "Sandeep";
echo "Hello, $name";

Output: