How can PHP beginners avoid unnecessary complexity and improve code readability when working with arrays?

PHP beginners can avoid unnecessary complexity and improve code readability when working with arrays by using built-in array functions like array_map(), array_filter(), and array_reduce(). These functions provide a more concise and readable way to manipulate arrays compared to traditional loops. Additionally, using descriptive variable names and commenting code can help clarify the purpose of the array operations being performed.

// Example: Using array_map() to square each element in an array
$numbers = [1, 2, 3, 4, 5];
$squaredNumbers = array_map(function($num) {
    return $num * $num;
}, $numbers);

print_r($squaredNumbers);