3v4l.org

run code in 300+ PHP versions simultaneously
<?php function create($foo) { $bar = new stdClass; $foo->bar = $bar; $bar->foo = $foo; } gc_collect_cycles(); create(new stdClass()); var_dump(gc_collect_cycles()); // expected '2', actual '2' create(new ArrayObject()); var_dump(gc_collect_cycles()); // expected '2', actual '0'
Output for 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
int(2) Deprecated: Creation of dynamic property ArrayObject::$bar is deprecated in /in/LQ2Uv on line 5 int(3)
Output for 5.5.37 - 5.5.38, 5.6.23 - 5.6.40, 7.0.0 - 7.0.33, 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
int(2) int(3)
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.36, 5.6.0 - 5.6.22
int(2) int(0)
Output for 5.0.0 - 5.0.5, 5.1.1 - 5.1.6, 5.2.0 - 5.2.17
Fatal error: Call to undefined function gc_collect_cycles() in /in/LQ2Uv on line 9
Process exited with code 255.
Output for 5.1.0
Fatal error: fatal flex scanner internal error--end of buffer missed in /in/LQ2Uv on line 15
Process exited with code 255.
Output for 4.4.5 - 4.4.9
Fatal error: Call to undefined function: gc_collect_cycles() in /in/LQ2Uv on line 9
Process exited with code 255.
Output for 4.3.2 - 4.3.11, 4.4.0 - 4.4.4
Fatal error: Call to undefined function: gc_collect_cycles() in /in/LQ2Uv on line 9
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Call to undefined function: gc_collect_cycles() in /in/LQ2Uv on line 9
preferences:
274.73 ms | 401 KiB | 459 Q