<?php
function gen()
{
yield;
return;
}
function gen2()
{
yield;
return null;
}
function gen3()
{
return;
yield;
}
function gen4()
{
return;
yield;
}
var_dump(gen());
var_dump(gen2());
var_dump(gen3());
var_dump(gen4());
$var = 24;
(yield $var);
return 42;
}
$gen = gen3();
var_dump($gen->current());
$gen->next();
var_dump($gen->getReturn());
// Return types for generators specify the return of the function,
// not of the generator return value, so this code is okay
function gen4() : Generator
{
(yield 24);
return 42;
}
$gen = gen4();
var_dump($gen->current());
$gen->next();
var_dump($gen->getReturn());
// Has no explicit return, but implicitly return NULL at the end
function gen5()
{
(yield 24);
}
$gen = gen5();
var_dump($gen->current());
$gen->next();
var_dump($gen->getReturn());
// Explicit value-less return also results in a NULL generator
// return value and there is no interference with type hints
function gen6() : Generator
{
return "str";
// CONST
yield;
}
$gen = gen2();
var_dump($gen->getReturn());
function gen3($var)
{
return $var;
// CV
yield;
}
$gen = gen3([1, 2, 3]);
var_dump($gen->getReturn());
function gen4($obj)
{
return $obj->prop;
// VAR
yield;
}
$gen = gen4((object) ['prop' => 321]);
var_dump($gen->getReturn());
function gen5($val)
{
return (int) $val;
// TMP
yield;
}
$gen = gen5("42");
var_dump($gen->getReturn());