PHP：根据值确定文本颜色

I've stored values in an array and I want to apply conditional formatting to the output when I access them. I want the text of the values, less than or equal to 10, displayed in red or, greater than 10, displayed in green.

For example, below, I would like the resultant value of 5 to be displayed in red.

I'm a newbie to this but would assume I would need the help of CSS to achieve this.

Any advice would be appreciated.

<?php

$total_sql=array();
$total_sql[]=5;
$total_sql[]=10;
$total_sql[]=15;
$total_sql[]=20;

print($total_sql[0]);

?>

<?php

$total_sql=array();
$total_sql[]=5;
$total_sql[]=10;
$total_sql[]=15;
$total_sql[]=20;

print($total_sql[0]);

?>

foreach($total_sql as $item)
{
if($item >10)
{
    echo '<p class="green">'.$item.'</p>';
} else {
    echo '<p class="red">'.$item.'</p>';
}


.red{color:red;}
.green{color:green}

Like that one?

foreach($total_sql as $sql) {
    if($sql < 10) {
        echo '<font color"#FF0000">$sql</font>';
    }
    else {
          echo '<font color"#00FF00">$sql</font>';
    }
}

One liner:

echo '<div style="color: '.(($score == '5') ? 'red' : 'black').';">'.$score.'</div>';

Comparison operator could be:

$score == 'x'
        > 'y'
       >= 'z'
etc...

I've used an inline style here, but you can use class= too.