Showing Star Rating based on text file number in array [duplicate] - php

Question

This question already has answers here:
Displaying star rating with Font Awesome icons
(4 answers)
Laravel - Star rating - Optimization?
(5 answers)
Closed last month.
I have a script which reads an array from a text file and grabs each line and produces star rating images based on number in array. The script is kind of big and was wondering if there was a better way of doing this.
<?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

Yes, better ways... A loop will help, maybe something like this (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

You can work off this function (doesn't include the half stars, shows you how to do the full star rating - I just noticed you run halfs as well);
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]);
You can tweak this that if the number contains a decimal you can append to the string '' for example; you get the gist :P
-------------- Edit
Tweaked it and added the half star rating :)
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]);