编写ratings php函数的更好方法 - Better way of writing ratings php function

Better way of writing ratings php function

我在下面写了这个评级函数，想知道它是否可以更小/更简单或更好地编码，它使用函数中基于百分比数字显示图像

function rating( $number ) {
if ($number >= .0 && $number <= .099999) { 
  $star = '<img src="images/0.gif" alt="' . $number . '" />';
}
if ($number >= .10 && $number <= .199999){
  $star = '<img src="images/10.gif" alt="' . $number . '" />';
}
if ($number >= .20 && $number <= .299999){
  $star = '<img src="images/20.gif" alt="' . $number . '" />';
}
if ($number >= .30 && $number <= .399999){
  $star = '<img src="images/30.gif" alt="' . $number . '" />';
}
if ($number >= .40 && $number <= .499999){
  $star = '<img src="images/40.gif" alt="' . $number . '" />';
}
if ($number >= .50 && $number <= .599999){
  $star = '<img src="images/50.gif" alt="' . $number . '" />';
}
if ($number >= .60 && $number <= .699999) { 
  $star = '<img src="images/60.gif" alt="' . $number . '" />';
}
if ($number >= .70 && $number <= .799999){
  $star = '<img src="images/70.gif" alt="' . $number . '" />';
}
if ($number >= .80 && $number <= .899999){
  $star = '<img src="images/80.gif" alt="' . $number . '" />';
}
if ($number >= .90 && $number <= .999999){
  $star = '<img src="images/90.gif" alt="' . $number . '" />';
}
if ($number > .999999){
  $star = '<img src="images/100.gif" alt="' . $number . '" />';
}
return $star;
}

以下是它的使用方法：

rating(0.51087)

当然，这只需要一点数学运算。

function rating($number) {
    return '<img src="images/' . floor($number * 10) * 10 . '.gif" alt="' . $number . '" />';
}