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<?php $var = 'meukee!'; var_dump(isset($var['waa']), $var['waa']); $var = 'm'; var_dump(isset($var['waa']), $var['waa']);
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.19, 8.3.0 - 8.3.7
Fatal error: Uncaught TypeError: Cannot access offset of type string on string in /in/puXNq:5 Stack trace: #0 {main} thrown in /in/puXNq on line 5
Process exited with code 255.
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.12 - 7.3.33, 7.4.0 - 7.4.33
Warning: Illegal string offset 'waa' in /in/puXNq on line 5 bool(false) string(1) "m" Warning: Illegal string offset 'waa' in /in/puXNq on line 9 bool(false) string(1) "m"
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.3 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29
bool(true) string(1) "m" bool(true) string(1) "m"
Output for 5.0.0 - 5.0.2
bool(false) string(1) "m" bool(false) string(1) "m"

preferences:
214.35 ms | 401 KiB | 357 Q