Online PHP editor | output for AbObF

@ 2020-02-19T07:14:24Z

<?php declare(strict_types=1);

class Amount {
    var $amount;
}
class TaxedAmount extends Amount {
    var $rate;
    function __toString(): float {
        return $this->amount * $this->rate;
    }
}
$item = new TaxedAmount;
$item->amount = 242.0;
$item->rate = 1.13;
echo "You owe me $" . $item->__toString() . " for this answer.";

Output for 8.0.14 - 8.0.30, 8.1.0 - 8.1.29, 8.2.0 - 8.2.20, 8.3.0 - 8.3.9: Fatal error: TaxedAmount::__toString(): Return type must be string when declared in /in/AbObF on line 8
Process exited with code 255.
Output for 8.0.0 - 8.0.13: Fatal error: Declaration of TaxedAmount::__toString(): float must be compatible with Stringable::__toString(): string in /in/AbObF on line 8
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: You owe me $273.46 for this answer.

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