如何回显函数

Question

I've been struggling to echo the output of a function. I tried this:

echo 'myFunction('foo')'; 

.. which obviously won't work, due to the extra single quotes. Any suggestions?

Answer 1

Let's take this function :

function getStr()
{
    return "hello";
}

It will simply return a string, which means, calling this :

echo getStr();

Has the same exact result as calling this :

echo "hello";

Which means, the result of your function can be treated just like a variable (except you cant modify it), so you can do whatever you want with the result :

$string = getStr() . ' - ' . getStr();
echo $string; // Will print "hello - hello";