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<?php $expected_array_got_string = 'test'; var_dump($expected_array_got_string['blah']); var_dump(isset($expected_array_got_string['blah'])); var_dump(isset($expected_array_got_string['jkjk'][0])); var_dump(isset($expected_array_got_string['jkjk'][0]['test'])); var_dump(isset($expected_array_got_string['jkjk']['test'][1])); var_dump(isset($expected_array_got_string['jkjk']['test'][0]));
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
Fatal error: Uncaught TypeError: Cannot access offset of type string on string in /in/djgWu:4 Stack trace: #0 {main} thrown in /in/djgWu on line 4
Process exited with code 255.
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
Warning: Illegal string offset 'blah' in /in/djgWu on line 4 string(1) "t" bool(false) bool(false) bool(false) bool(false) bool(false)
Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.28
Warning: Illegal string offset 'blah' in /in/djgWu on line 4 string(1) "t" bool(false) bool(true) bool(false) bool(false) bool(true)

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