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<?php declare(strict_types=0); require("/in/CBEkF"); (new A)->test(20); // will this fail?
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
Warning: require(/in/CBEkF): Failed to open stream: No such file or directory in /in/D9PBk on line 6 Fatal error: Uncaught Error: Failed opening required '/in/CBEkF' (include_path='.:') in /in/D9PBk:6 Stack trace: #0 {main} thrown in /in/D9PBk on line 6
Process exited with code 255.
Output for 7.0.14 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.3 - 7.4.4, 7.4.6 - 7.4.33
Warning: require(/in/CBEkF): failed to open stream: No such file or directory in /in/D9PBk on line 6 Fatal error: require(): Failed opening required '/in/CBEkF' (include_path='.:') in /in/D9PBk on line 6
Process exited with code 255.
Output for 7.0.0 - 7.0.6, 7.4.0, 7.4.5
float(20)
Output for 5.6.28
Warning: Unsupported declare 'strict_types' in /in/D9PBk on line 4 Warning: require(/in/CBEkF): failed to open stream: No such file or directory in /in/D9PBk on line 6 Fatal error: require(): Failed opening required '/in/CBEkF' (include_path='.:') in /in/D9PBk on line 6
Process exited with code 255.
Output for 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.21
Warning: Unsupported declare 'strict_types' in /in/D9PBk on line 4 Warning: Unsupported declare 'strict_types' in /in/CBEkF on line 2 Catchable fatal error: Argument 1 passed to A::test() must be an instance of float, integer given, called in /in/D9PBk on line 8 and defined in /in/CBEkF on line 3
Process exited with code 255.
Output for 5.3.0 - 5.3.29
Warning: Unsupported declare 'strict_types' in /in/D9PBk on line 4 Parse error: syntax error, unexpected T_OBJECT_OPERATOR in /in/D9PBk on line 8
Process exited with code 255.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
Parse error: syntax error, unexpected T_OBJECT_OPERATOR in /in/D9PBk on line 8
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_OBJECT_OPERATOR in /in/D9PBk on line 8
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/D9PBk on line 8
Process exited with code 255.

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