Are there any best practices for naming variables in PHP scripts to improve readability and maintainability?

When naming variables in PHP scripts, it is important to follow certain best practices to improve readability and maintainability. Some common practices include using descriptive names that convey the purpose of the variable, using camelCase or snake_case for naming conventions, avoiding abbreviations, and being consistent throughout the codebase.

// Example of using descriptive variable names in PHP script
$userName = "JohnDoe";
$userAge = 30;
$userEmail = "johndoe@example.com";