3v4l.org

run code in 300+ PHP versions simultaneously
<?php $data=array('data'=>array('something')); echo "Good\n"; var_dump(isset($data['data'][0])); var_dump($data['data'][0]); echo "\nBad\n"; var_dump(isset($data['data'][0]['data'])); var_dump(@$data['data'][0]['data']); echo "\nUgly\n"; var_dump(isset($data['data'][0]['data'][0])); var_dump(@$data['data'][0]['data'][0]); echo "\nTrick or treat\n"; var_dump(isset($data['data'][0]['data'][0]['data'][0]['data'][0]['data'][0]['data'][0]['data'][0]['data'][0])); var_dump(@$data['data'][0]['data'][0]['data'][0]['data'][0]['data'][0]['data'][0]['data'][0]['data'][0]); var_dump(isset($data['data'][0]['data'][0]['data'][0]['data'][0]['data'][0]['data'][0]['data'][0]['data'][0]['data'])); var_dump(@$data['data'][0]['data'][0]['data'][0]['data'][0]['data'][0]['data'][0]['data'][0]['data'][0]['data']);
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Good bool(true) string(9) "something" Bad bool(false) Fatal error: Uncaught TypeError: Cannot access offset of type string on string in /in/W9qt9:12 Stack trace: #0 {main} thrown in /in/W9qt9 on line 12
Process exited with code 255.
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
Good bool(true) string(9) "something" Bad bool(false) string(1) "s" Ugly bool(false) string(1) "s" Trick or treat bool(false) string(1) "s" bool(false) string(1) "s"
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.28
Good bool(true) string(9) "something" Bad bool(false) string(1) "s" Ugly bool(true) string(1) "s" Trick or treat bool(true) string(1) "s" bool(false) string(1) "s"
Output for 5.0.3 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29
Good bool(true) string(9) "something" Bad bool(true) string(1) "s" Ugly bool(false)
Process exited with code 255.
Output for 5.0.0 - 5.0.2
Good bool(true) string(9) "something" Bad bool(false) string(1) "s" Ugly bool(false)
Process exited with code 255.
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9
Good bool(true) string(9) "something" Bad bool(true) string(1) "s" Ugly bool(false) NULL Trick or treat bool(false) NULL bool(false) NULL

preferences:
232.83 ms | 402 KiB | 371 Q