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Server : nginx/1.20.1 System : Linux iZ2ze9ojcl78uluczwag69Z 4.18.0-240.22.1.el8_3.x86_64 #1 SMP Thu Apr 8 19:01:30 UTC 2021 x86_64 User : www ( 1000) PHP Version : 7.3.28 Disable Function : passthru,exec,system,chroot,chgrp,chown,shell_exec,popen,proc_open,pcntl_exec,ini_alter,ini_restore,dl,openlog,syslog,readlink,symlink,popepassthru,pcntl_alarm,pcntl_fork,pcntl_waitpid,pcntl_wait,pcntl_wifexited,pcntl_wifstopped,pcntl_wifsignaled,pcntl_wifcontinued,pcntl_wexitstatus,pcntl_wtermsig,pcntl_wstopsig,pcntl_signal,pcntl_signal_dispatch,pcntl_get_last_error,pcntl_strerror,pcntl_sigprocmask,pcntl_sigwaitinfo,pcntl_sigtimedwait,pcntl_exec,pcntl_getpriority,pcntl_setpriority,imap_open,apache_setenv Directory : /www/wwwroot/0531yanglao.com/vendor/dasprid/enum/test/ |
<?php
declare(strict_types = 1);
namespace DASPRiD\EnumTest;
use DASPRiD\Enum\AbstractEnum;
/**
* @method static self MERCURY()
* @method static self VENUS()
* @method static self EARTH()
* @method static self MARS()
* @method static self JUPITER()
* @method static self SATURN()
* @method static self URANUS()
* @method static self NEPTUNE()
*/
final class Planet extends AbstractEnum
{
protected const MERCURY = [3.303e+23, 2.4397e6];
protected const VENUS = [4.869e+24, 6.0518e6];
protected const EARTH = [5.976e+24, 6.37814e6];
protected const MARS = [6.421e+23, 3.3972e6];
protected const JUPITER = [1.9e+27, 7.1492e7];
protected const SATURN = [5.688e+26, 6.0268e7];
protected const URANUS = [8.686e+25, 2.5559e7];
protected const NEPTUNE = [1.024e+26, 2.4746e7];
/**
* Universal gravitational constant.
*/
private const G = 6.67300E-11;
/**
* Mass in kilograms.
*
* @var float
*/
private $mass;
/**
* Radius in meters.
*
* @var float
*/
private $radius;
protected function __construct(float $mass, float $radius)
{
$this->mass = $mass;
$this->radius = $radius;
}
public function mass() : float
{
return $this->mass;
}
public function radius() : float
{
return $this->radius;
}
public function surfaceGravity() : float
{
return self::G * $this->mass / ($this->radius * $this->radius);
}
public function surfaceWeight(float $otherMass) : float
{
return $otherMass * $this->surfaceGravity();
}
}