Fatal error: Uncaught TypeError: CallbackFilterIterator::__construct(): Argument #2 ($callback) must be a valid callback, function "hello" not found or invalid function name in /in/uoNCC:5
Stack trace:
#0 /in/uoNCC(5): CallbackFilterIterator->__construct(Object(ArrayIterator), 'hello')
#1 {main}
thrown in /in/uoNCC on line 5
Process exited with code 255.
Fatal error: Uncaught TypeError: CallbackFilterIterator::__construct() expects parameter 2 to be a valid callback, function 'hello' not found or invalid function name in /in/uoNCC:5
Stack trace:
#0 /in/uoNCC(5): CallbackFilterIterator->__construct(Object(ArrayIterator), 'hello')
#1 {main}
thrown in /in/uoNCC on line 5
Process exited with code 255.
Fatal error: Uncaught exception 'InvalidArgumentException' with message 'CallbackFilterIterator::__construct() expects parameter 2 to be a valid callback, function 'hello' not found or invalid function name' in /in/uoNCC:5
Stack trace:
#0 /in/uoNCC(5): CallbackFilterIterator->__construct(Object(ArrayIterator), 'hello')
#1 {main}
thrown in /in/uoNCC on line 5
Process exited with code 255.