IF语句无法正确解析

Question

代码输出"我将前往洛杉矶.行程将是300英里的距离.我们将需要停止2次." 什么时候它应该根据我的IF语句中定义的数字拉出"停止"这个单词的复数或单数(在这种情况下,它应该是复数).由于我构建类的方式,我猜测IF不能像我预期的那样工作.任何帮助修复它将不胜感激.

class trip {

  public $destination;
  public $distance;
  public $unit;
  public $stops = null;
  public $transport = null;

  function __construct($destination, $distance, $unit, $stops, $transport) {
    $this->destination = $destination;
    $this->distance = $distance;
    $this->unit = $unit;
    $this->stops = $stops;
    $this->transport = $transport;
  }

  function getTrip() {
    $a = "I will be going to " . $this->destination . ". ";
    $a .= "The journey will be a distance of " . $this->distance . " " . $this->unit . ". ";
    $a .= "We will need to make " . $this->stops;
    if ($this->stops = 1) {
      $a .= " stop.";
    } else {
      $a .= " stops.";
    }
    $a .= "\n";
    echo $a;
  }
}

$first = new trip('Los Angeles',300,'miles',2,'airplane');
$first->getTrip();

Answer 1

你好像忽略了一个小细节.

if ($this->stops = 1) 

应该

if ($this->stops == 1)