Online PHP editor | output for Vhr9M

@ 2018-08-01T18:18:39Z

<?php

class Json
{
    public function toJSON() {
        return json_encode(get_object_vars($this));
    }
}

class A extends Json {

    private $a;

    function __construct($input = null) {
        $this->a = $input;
    }

    //getter & setter
}

class B extends Json {
    private $b;

    function __construct($input = null) {
        $this->b = $input;
    }

    //getter & setter

}

$a = (new A("A"))->toJSON();
var_dump($a);

Output for 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.28, 8.4.1 - 8.4.14, 8.5.0 - 8.5.1: string(2) "[]"
Output for 8.4.15: /bin/php-8.4.15: /usr/lib/libm.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libm.so.6: version `GLIBC_2.35' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libc.so.6: version `GLIBC_2.34' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libc.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.4.15)
Process exited with code 1.

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