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<?php declare(strict_types=1); function foobar(): int { return 1.0; } var_dump(foobar());
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: foobar(): Return value must be of type int, float returned in /in/llZOJ:5 Stack trace: #0 /in/llZOJ(8): foobar() #1 {main} thrown in /in/llZOJ on line 5
Process exited with code 255.
Output for 7.3.16 - 7.3.33, 7.4.0 - 7.4.33
Fatal error: Uncaught TypeError: Return value of foobar() must be of the type int, float returned in /in/llZOJ:5 Stack trace: #0 /in/llZOJ(8): foobar() #1 {main} thrown in /in/llZOJ on line 5
Process exited with code 255.
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.6 - 7.2.33
Fatal error: Uncaught TypeError: Return value of foobar() must be of the type integer, float returned in /in/llZOJ:5 Stack trace: #0 /in/llZOJ(8): foobar() #1 {main} thrown in /in/llZOJ on line 5
Process exited with code 255.
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28
Warning: Unsupported declare 'strict_types' in /in/llZOJ on line 2 Parse error: syntax error, unexpected ':', expecting '{' in /in/llZOJ on line 4
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 ':', expecting '{' in /in/llZOJ on line 4
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 ':', expecting '{' in /in/llZOJ on line 4
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `'{'' in /in/llZOJ on line 4
Process exited with code 255.

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