What is the good example of using 'func_get_arg' in PHP?

Question

I just have found out that there is a function called func_get_arg in PHP which enables developer to use variant style of getting arguments. It seems to be very us

Answer 1

I hardly ever use func_get_arg(), but I do use its cousin func_get_args() quite a bit. Here's one example, a function along the lines of the echo statement that entity encodes all its arguments:

function ee() {
    $args = func_get_args();
    echo implode('', array_map('htmlentities', $args));
}

I use that function quite a bit.

Here's another useful example, a function that does the same job as SQL's COALESCE() function.

function coalesce() {
    $args = func_get_args();
    foreach ($args as $arg) {
        if (!is_null($arg)) {
            return $arg;
        }
    }
    return null;
}

It returns the first non-null argument passed in, or null if there's no such argument.