- implode: documentation ( source)
<?php
$Foo = call_user_func(function() {
$a = function() {
return 'hello';
};
$b = function() {
return 'world';
};
return (object)array(
'a' => $a,
'b' => $b,
);
});
echo implode(' ', array($Foo->a(), $Foo->b()));