如何根据值将单元格变成红色和绿色？

Question

如何根据值将单元格变为红色和绿色？我希望单元格值改变颜色，如上图所示。

$data = array();
while( $row=mysqli_fetch_array($query) ) {  // preparing an array
$nestedData=array(); 


$nestedData[] = $row["no"];
$nestedData[] = $row["svcno"];
$nestedData[] = $row["pangkat"];
$nestedData[] = $row["name"];
$nestedData[] = $row["year"];
$nestedData[] = $row["system"];
$nestedData[] = $row["course"];
$nestedData[] = $row["f1"];
$nestedData[] = $row["f2"];

$data[] = $nestedData;
}

$json_data = array(
        "draw"            => intval( $requestData['draw'] ),   // for every 
request/draw by clientside , they send a number as a parameter, when they 
recieve a response/data they first check the draw number, so we are sending 
same number in draw. 
        "recordsTotal"    => intval( $totalData ),  // total number of 
records
        "recordsFiltered" => intval( $totalFiltered ), // total number of 
records after searching, if there is no searching then totalFiltered = 
totalData
        "data"            => $data   // total data array
        );

echo json_encode($json_data);  // send data as json format

 ?>

Answer 1

以下示例说明如何通过动态更改表中td标记的背景颜色属性来更改所需值的颜色。您应该能够研究这一点并使其适应您的代码。

$array = array(1,4,3,7,8,3,5,7,1,8,1,5,6);

echo
'<table>' .
  '<tr>' .
    '<th>Value</th>' .
  '</tr>';

foreach($array as $key){

  if($key <= 3){
   $color = 'green';
  }elseif($key > 3 && $key <= 6){
    $color = 'yellow';
   }elseif($key > 6 && $key <= 10){
      $color = 'red';
    }

  echo
  '<tr>' .
    '<td style="background-color:' . $color . ';">' . $key . '</td>' .
  '</tr>';

}

echo
'</table>';