(yield 24);
return 42;
}
$gen = gen2();
var_dump($gen->current());
$gen->next();
var_dump($gen->getReturn());
// & for generators specifies by-reference yield, not return
// so it's okay to return a literal
function &gen3()
{
$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
<?php
function gen3($start, $end)
{
$i = $start;
while ($start < $end) {
(yield $i++);
}
}
$gen1 = gen3(0, 10);
foreach ($gen1 as $value) {
echo $value . "\n";
if ($value == 3) {
$gen2 = clone $gen1;
}
}
echo "Second generator: \n\n";
foreach ($gen2 as $value) {
echo $value . "\n";
}
<?php
function gen()
{
yield;
return;
}
function gen2()
{
yield;
return null;
}
function gen3()
{
return;
yield;
}
function gen4()
{
return;
yield;
}
var_dump(gen());
var_dump(gen2());
var_dump(gen3());
var_dump(gen4());
var_dump($gen->getReturn());
function gen2()
{
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;
}