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<?php class Example implements Iterator { public $i = 0; public $prop = 'pie'; public function rewind() { $this->i = 0;} public function next() {} public function valid() { return ($this->i++ < 5); } public function key() { return 7; } public function current() { return $this->prop; } } $it = new Example; foreach ($it as &$current) { $current = str_rot13($current); } var_dump($it);
Output for git.master, git.master_jit, rfc.property-hooks
Deprecated: Return type of Example::current() should either be compatible with Iterator::current(): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/pdaNO on line 11 Deprecated: Return type of Example::next() should either be compatible with Iterator::next(): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/pdaNO on line 8 Deprecated: Return type of Example::key() should either be compatible with Iterator::key(): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/pdaNO on line 10 Deprecated: Return type of Example::valid() should either be compatible with Iterator::valid(): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/pdaNO on line 9 Deprecated: Return type of Example::rewind() should either be compatible with Iterator::rewind(): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/pdaNO on line 7 Fatal error: Uncaught Error: An iterator cannot be used with foreach by reference in /in/pdaNO:16 Stack trace: #0 {main} thrown in /in/pdaNO on line 16
Process exited with code 255.

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