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<?php declare(strict_types=1); function foo(): string { return 1; } foo();
Output for 8.0.1 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.26, 8.4.1 - 8.4.14
Fatal error: Uncaught TypeError: foo(): Return value must be of type string, int returned in /in/Ug7TG:6 Stack trace: #0 /in/Ug7TG(9): foo() #1 {main} thrown in /in/Ug7TG on line 6
Process exited with code 255.

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