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<?php class Test implements Iterator { public function current() { return "value"; } public function key() { return new stdClass; } public function next() { } public function rewind() { } public function valid() { return true; } } $test = new Test; foreach ($test as $key => $value) { var_dump($key, $value); break; }
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.38, 7.0.0 - 7.0.33, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.28, 7.4.0 - 7.4.16, 8.0.0 - 8.0.3
object(stdClass)#3 (0) { } string(5) "value"
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45
Warning: Illegal type returned from Test::key() in /in/VU5Df on line 32 int(0) string(5) "value"
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING, expecting '{' in /in/VU5Df on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1
Parse error: parse error, unexpected T_STRING, expecting '{' in /in/VU5Df on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `'{'' in /in/VU5Df on line 3
Process exited with code 255.