Accessing a variable defined in a parent function

Question

Is there a way to access $foo from within inner()?

function outer()
{
    $foo = \"...\";

    function inner()
    {
        // pr         


        

Answer 1

I would like to mention that this is possibly not the best way to do coding, as you are defining a function within another. There is always a better option than doing in such a way.

function outer()
{
    global $foo;
    $foo = "Let us see and understand..."; // (Thanks @Emanuil)

    function inner()
    {
        global $foo;
        print $foo;
    }

    inner();
}

outer();

This will output:-

Let us see and understand...

Instead of writing this way, you could have written the folowing code snippet:-

function outer()
{
    $foo = "Let us see improved way...";

    inner($foo);

    print "\n";
    print $foo;
}

function inner($arg_foo)
{
    $arg_foo .= " and proper way...";
    print $arg_foo;
}

outer();

This last code snippet will output:-

Let us see improved way... and proper way...
Let us see improved way...

But at last, it is up to you always, as to which process you are going to use. So hope it helps.