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<?php $a = [ 'test' => 1, 'test2' => 2, ]; var_dump(sizeof($a)); class Test { private $test = 1; private $test2 = 2; } $b = new Test(); var_dump(sizeof($b));
Output for 8.0.10 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
int(2) Fatal error: Uncaught TypeError: sizeof(): Argument #1 ($value) must be of type Countable|array, Test given in /in/uSnik:19 Stack trace: #0 {main} thrown in /in/uSnik on line 19
Process exited with code 255.
Output for 8.0.0 - 8.0.9
int(2) Fatal error: Uncaught TypeError: sizeof(): Argument #1 ($var) must be of type Countable|array, Test given in /in/uSnik:19 Stack trace: #0 {main} thrown in /in/uSnik on line 19
Process exited with code 255.
Output for 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
int(2) Warning: sizeof(): Parameter must be an array or an object that implements Countable in /in/uSnik on line 19 int(1)
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.33
int(2) int(1)

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