Access variable from function inside of nested function

Access variable from function inside of nested function

In PHP, you have to use the global keyword in order to access a variable from the global scope when inside of a function. However, how can you access a variable within the scope of a parent function?

In PHP, you have to use the global keyword in order to access a variable from the global scope when inside of a function. However, how can you access a variable within the scope of a parent function?

In the example:

function foo() {
    $content = 'foobar';

function bar() {
    echo $content; // echos nothing
}

}

How can I access the $content variable?

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