<?php
function foo() {
yield 1;
}
function bar()
{
yield from foo();
}
function baz()
{
yield from bar();
}
$gen = baz();
$gen->valid(); // start the generator
var_dump((new ReflectionGenerator($gen))->getTrace());
The above example will output
something similar to:
array(2) {
[0]=>
array(4) {
["file"]=>
string(18) "example.php"
["line"]=>
int(8)
["function"]=>
string(3) "foo"
["args"]=>
array(0) {
}
}
[1]=>
array(4) {
["file"]=>
string(18) "example.php"
["line"]=>
int(12)
["function"]=>
string(3) "bar"
["args"]=>
array(0) {
}
}
}