How can developers improve code readability and maintainability in PHP by following consistent naming conventions?

Developers can improve code readability and maintainability in PHP by following consistent naming conventions. This includes using meaningful and descriptive variable, function, and class names, as well as adhering to a consistent naming style throughout the codebase. By doing so, developers can make it easier for themselves and others to understand and maintain the code in the long run.

// Inconsistent naming example
$usrNm = "John";
$UserAge = 25;

// Consistent naming example
$username = "John";
$userAge = 25;