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<?php class Foo { private $callable; public function __construct() { $this->callable = function () { echo "hello world!"; }; } public function yesItDoes() { $this->callable->call(); } } (new Foo)->yesItDoes();
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.7
Fatal error: Uncaught ArgumentCountError: Closure::call() expects at least 1 argument, 0 given in /in/K14qb:12 Stack trace: #0 /in/K14qb(12): Closure->call() #1 /in/K14qb(16): Foo->yesItDoes() #2 {main} thrown in /in/K14qb on line 12
Process exited with code 255.
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
Warning: Closure::call() expects at least 1 parameter, 0 given in /in/K14qb on line 12
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.28
Fatal error: Call to undefined method Closure::call() in /in/K14qb on line 12
Process exited with code 255.

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