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<?php class Context { private $context = null; private $data = []; public function __construct(Context $context = null) { $this->context = $context; } public function get($name) { if (isset($this->data[$name])) { return $this->data[$name]; } if (isset($this->context)) { return $this->context->get($name); } return null; } public function getAll(array $names) { $data = []; foreach ($names as $name) { $data[$name] = $this->get($name); } return $data; } public function set($name, $value) { $this->data[$name] = $value; } public function wrap() { return new Context($this); } public function call(callable $function) { call_user_func($function, $this); } } (new Context)->call(function(Context $c) { $c->set('foo', 1); $c->set('bar', 2); $c->wrap()->call(function(Context $c) { $c->set('bar', 3); $c->set('qux', 4); $c->wrap()->call(function(Context $c) { $c->set('qux', 5); $c->set('zip', 6); var_dump($c->getAll()); }); var_dump($c->getAll()); }); var_dump($c->getAll()); });
Output for 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Fatal error: Uncaught ArgumentCountError: Too few arguments to function Context::getAll(), 0 passed in /in/29KXu on line 53 and exactly 1 expected in /in/29KXu:22 Stack trace: #0 /in/29KXu(53): Context->getAll() #1 /in/29KXu(39): {closure}(Object(Context)) #2 /in/29KXu(50): Context->call(Object(Closure)) #3 /in/29KXu(39): {closure}(Object(Context)) #4 /in/29KXu(47): Context->call(Object(Closure)) #5 /in/29KXu(39): {closure}(Object(Context)) #6 /in/29KXu(44): Context->call(Object(Closure)) #7 {main} thrown in /in/29KXu on line 22
Process exited with code 255.
Output for 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28
Fatal error: Uncaught ArgumentCountError: Too few arguments to function Context::getAll(), 0 passed in /in/29KXu on line 53 and exactly 1 expected in /in/29KXu:22 Stack trace: #0 /in/29KXu(53): Context->getAll() #1 /in/29KXu(39): {closure}(Object(Context)) #2 /in/29KXu(54): Context->call(Object(Closure)) #3 /in/29KXu(39): {closure}(Object(Context)) #4 /in/29KXu(56): Context->call(Object(Closure)) #5 /in/29KXu(39): {closure}(Object(Context)) #6 /in/29KXu(58): Context->call(Object(Closure)) #7 {main} thrown in /in/29KXu on line 22
Process exited with code 255.
Output for 7.0.0 - 7.0.33
Fatal error: Uncaught TypeError: Argument 1 passed to Context::getAll() must be of the type array, none given, called in /in/29KXu on line 53 and defined in /in/29KXu:22 Stack trace: #0 /in/29KXu(53): Context->getAll() #1 /in/29KXu(39): {closure}(Object(Context)) #2 /in/29KXu(54): Context->call(Object(Closure)) #3 /in/29KXu(39): {closure}(Object(Context)) #4 /in/29KXu(56): Context->call(Object(Closure)) #5 /in/29KXu(39): {closure}(Object(Context)) #6 /in/29KXu(58): Context->call(Object(Closure)) #7 {main} thrown in /in/29KXu on line 22
Process exited with code 255.
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40
Catchable fatal error: Argument 1 passed to Context::getAll() must be of the type array, none given, called in /in/29KXu on line 53 and defined in /in/29KXu on line 22
Process exited with code 255.
Output for 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/29KXu on line 6
Process exited with code 255.
Output for 5.0.0 - 5.0.5
Parse error: parse error, unexpected '[' in /in/29KXu on line 6
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/29KXu on line 5
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 T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/29KXu on line 5
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `T_OLD_FUNCTION' or `T_FUNCTION' or `T_VAR' or `'}'' in /in/29KXu on line 5
Process exited with code 255.
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