根据数组中的文本文件编号显示星级

Question

我有一个脚本，从文本文件中读取数组并抓取每行，并根据数组中的数字生成星级图像。脚本有点大，我想知道是否有更好的方法来做到这一点。

<?php if ($row[2] == '5') { ?>
<i class="fa fa-star"></i><i class="fa fa-star"></i><i class="fa fa-star"></i><i class="fa fa-star"></i><i class="fa fa-star"></i>
<?php } elseif ($row[2] == '4.5') { ?>
<i class="fa fa-star"></i><i class="fa fa-star"></i><i class="fa fa-star"></i><i class="fa fa-star"></i><i class="fa fa-star-half-o"></i>
<?php } elseif ($row[2] == '4') { ?>
<i class="fa fa-star"></i><i class="fa fa-star"></i><i class="fa fa-star"></i><i class="fa fa-star"></i><i class="fa fa-star-o"></i>
<?php } elseif ($row[2] == '3.5') { ?>
<i class="fa fa-star"></i><i class="fa fa-star"></i><i class="fa fa-star"></i><i class="fa fa-star-half-o"></i><i class="fa fa-star-o"></i>
<?php } elseif ($row[2] == '3') { ?>
<i class="fa fa-star"></i><i class="fa fa-star"></i><i class="fa fa-star"></i><i class="fa fa-star-o"></i><i class="fa fa-star-o"></i>
<?php } elseif ($row[2] == '2.5') { ?>
<i class="fa fa-star"></i><i class="fa fa-star"></i><i class="fa fa-star-half-o"></i><i class="fa fa-star-o"></i><i class="fa fa-star-o"></i>
<?php } elseif ($row[2] == '2') { ?>
<i class="fa fa-star"></i><i class="fa fa-star"></i><i class="fa fa-star-o"></i><i class="fa fa-star-o"></i><i class="fa fa-star-o"></i>
<?php } elseif ($row[2] == '1.5') { ?>
<i class="fa fa-star"></i><i class="fa fa-star-half-o"></i><i class="fa fa-star-o"></i><i class="fa fa-star-o"></i><i class="fa fa-star-o"></i>
<?php } elseif ($row[2] == '1') { ?>
<i class="fa fa-star"></i><i class="fa fa-star-o"></i><i class="fa fa-star-o"></i><i class="fa fa-star-o"></i><i class="fa fa-star-o"></i>
<?php } elseif ($row[2] == '.5') { ?>
<i class="fa fa-star-half-o"></i><i class="fa fa-star-o"></i><i class="fa fa-star-o"></i><i class="fa fa-star-o"></i><i class="fa fa-star-o"></i>
<?php } elseif ($row[2] == '0') { ?>
<i class="fa fa-star-o"></i><i class="fa fa-star-o"></i><i class="fa fa-star-o"></i><i class="fa fa-star-o"></i><i class="fa fa-star-o"></i>
<?php } ?>

Answer 1

是的，更好的方法…一个循环会有帮助，也许像这样(PHP demo at tio.run)。

function star_printer($num)
{
$star_class = [
'blank' => 'far fa-star',
'half' => 'fas fa-star-half',
'full' => 'fas fa-star'];

$star_html = '<i class="%s"></i>';

$star_str = "";
for($i=1; $i<=5; $i++)
{
$is_half = $i==ceil($num) && ceil($num)!=$num;
$star = $is_half ? "half" : ($i>$num ? "blank" : "full");
$star_str .= sprintf($star_html, $star_class[$star]);
}
return $star_str;
}
echo star_printer(3.5);

Answer 2

您可以使用这个函数(不包括半星，向您展示如何进行全星评级-我刚刚注意到您也运行半星);

function getStars($rating){
$stars = "";
$x = 0;
while($x < $rating) {
$stars = $stars.'<i class="fa fa-star"></i>';
$x++;
}
return $stars;
}
echo getStars(3);

in your case -

echo getStars($row[2]);

你可以调整这个，如果数字包含一个小数，你可以附加到字符串"例如;你明白要点了:P

-------------- 编辑

调整并添加了半星评级:)

function getStars($rating){
$stars = "";
$x = 1;
while($x <= $rating) {
$stars = $stars.'<i class="fa fa-star"></i>';
$x++;
}
if (strpos($rating, '.') !== false) {
$stars = $stars . '<i class="fa fa-star-half">';
}
return $stars;
}
echo getStars(3.5);

Answer 3

function getStar($rating) {
$wholeStar = "<i class="fa fa-star"></i>";
$halfStar = "<i class="fa fa-star-half-o"></i>";
// round the rating for whole stars
$roundedRating = round($rating);
// Add the whole stars using str_repeat
$starString = str_repeat($wholeStar, round($rating));
// Add the half star if the rating is bigger than it's rounded value
if ($roundedRating < $rating) {
$starString .= $halfStar;
}
return $starString
}
echo getStar($row[2]);