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<?php final class Mutable { private $x; public function __construct(int $x) { $this->x = $x; } public function setX(int $x): void { $this->x = $x; } public function x(): int { return $this->x; } } final class User { private $m; public function __construct(Mutable $m) { $this->m = $m; } public function x(): void { echo "{$this->m}\n"; } } $m = new Mutable(42); $u = new User($m); $u->x(); $m->setX(-1); $u->x();
Output for 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6
Fatal error: Uncaught Error: Object of class Mutable could not be converted to string in /in/FLpRP:27 Stack trace: #0 /in/FLpRP(34): User->x() #1 {main} thrown in /in/FLpRP on line 27
Process exited with code 255.
Output for 8.3.5
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 Fatal error: Uncaught Error: Object of class Mutable could not be converted to string in /in/FLpRP:27 Stack trace: #0 /in/FLpRP(34): User->x() #1 {main} thrown in /in/FLpRP on line 27
Process exited with code 255.
Output for 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33
Recoverable fatal error: Object of class Mutable could not be converted to string in /in/FLpRP on line 27
Process exited with code 255.
Output for 7.0.0 - 7.0.20
Catchable fatal error: Object of class Mutable could not be converted to string in /in/FLpRP on line 27
Process exited with code 255.
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