php - How to echo an function -

i've been struggling echo output of function. tried this:

echo 'myfunction('foo')';

.. won't work, due single quotes. suggestions?

let's take function :

function getstr() {     return "hello"; }

it return string, means, calling :

echo getstr();

has same exact result calling :

echo "hello";

which means, result of function can treated variable (except cant modify it), can whatever want result :

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

Live