3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $array = new ArrayObject(array(1, 2)); $it = $array->getIterator(); $array[] = 3; while ($it->valid()) { $it->next(); echo $it->offsetGet(-1); } $it = $prev; $it->next(); echo $it->valid() ? $it->current() : "not valid";
Output for 7.0.0 - 7.1.0
Notice: Undefined offset: -1 in /in/u4CPA on line 13 Notice: Undefined offset: -1 in /in/u4CPA on line 13 Notice: Undefined offset: -1 in /in/u4CPA on line 13 Notice: Undefined variable: prev in /in/u4CPA on line 16 Fatal error: Uncaught Error: Call to a member function next() on null in /in/u4CPA:17 Stack trace: #0 {main} thrown in /in/u4CPA on line 17
Process exited with code 255.
Output for hhvm-3.10.0 - 3.12.0
Notice: Undefined index: -1 in /in/u4CPA on line 13 Notice: Undefined index: -1 in /in/u4CPA on line 13 Notice: Undefined variable: prev in /in/u4CPA on line 16 Fatal error: Uncaught exception 'BadMethodCallException' with message 'Call to a member function next() on a non-object (null)' in /in/u4CPA:17 Stack trace: #0 {main}
Process exited with code 255.
Output for 5.6.0 - 5.6.28
Notice: Undefined offset: -1 in /in/u4CPA on line 13 Notice: Undefined offset: -1 in /in/u4CPA on line 13 Notice: Undefined offset: -1 in /in/u4CPA on line 13 Notice: Undefined variable: prev in /in/u4CPA on line 16 Fatal error: Call to a member function next() on null in /in/u4CPA on line 17
Process exited with code 255.
Output for 5.4.8 - 5.5.37
Notice: Undefined offset: -1 in /in/u4CPA on line 13 Notice: Undefined offset: -1 in /in/u4CPA on line 13 Notice: Undefined offset: -1 in /in/u4CPA on line 13 Notice: Undefined variable: prev in /in/u4CPA on line 16 Fatal error: Call to a member function next() on a non-object in /in/u4CPA on line 17
Process exited with code 255.
Output for 5.0.4 - 5.4.7
Notice: Undefined offset: -1 in /in/u4CPA on line 13 Notice: Undefined offset: -1 in /in/u4CPA on line 13 Notice: Undefined offset: -1 in /in/u4CPA on line 13 Notice: Undefined variable: prev in /in/u4CPA on line 16 Fatal error: Call to a member function next() on a non-object in /in/u4CPA on line 17
Process exited with code 255.
Output for 5.0.0 - 5.0.3
Notice: Undefined offset: -1 in /in/u4CPA on line 13 Notice: Undefined offset: -1 in /in/u4CPA on line 13 Notice: Undefined offset: -1 in /in/u4CPA on line 13 Notice: Undefined variable: prev in /in/u4CPA on line 16 Fatal error: Call to a member function next() on a non-object in /in/u4CPA on line 17
Process exited with code 255.
Output for 4.3.2 - 4.4.9
Fatal error: Cannot instantiate non-existent class: arrayobject in /in/u4CPA on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Cannot instantiate non-existent class: arrayobject in /in/u4CPA on line 3