How can naming conventions for functions and variables in PHP code contribute to code readability, maintainability, and error detection?

Naming conventions for functions and variables in PHP code can contribute to code readability, maintainability, and error detection by making the code easier to understand for other developers. Consistent and descriptive names can help developers quickly grasp the purpose of a function or variable, reducing the time needed to understand the code. Additionally, clear naming conventions can help prevent errors by making it easier to spot inconsistencies or mistakes in the code.

// Bad naming convention example
$var = 10;
function func($param) {
    return $param * 2;
}

// Good naming convention example
$number = 10;
function multiplyByTwo($input) {
    return $input * 2;
}