What are the best practices for naming variables and table names in PHP to avoid errors?

When naming variables and table names in PHP, it is important to follow best practices to avoid errors. To ensure clarity and readability, use descriptive names that accurately represent the purpose of the variable or table. Avoid using reserved keywords, special characters, or spaces in the names. Additionally, adhere to a consistent naming convention, such as camelCase or snake_case, to maintain uniformity throughout your codebase.

// Example of naming variables using camelCase
$firstName = "John";
$lastName = "Doe";

// Example of naming table using snake_case
$table_name = "users";