更改行值时更改表背景颜色PHP

Question

I have a table on PHP like bellow and I need that, when the first column changes value, the line changes color. Eg: at table in example, first and second lines will be red, third line will be blue, fourth red again and so on

<table>
<tr>
    <td>1</td>
    <td>Test 1</td>
    <td>Today</td>
</tr>
<tr>
    <td>1</td>
    <td>Test 2</td>
    <td>Tomorrow</td>
</tr>
<tr>
    <td>2</td>
    <td>Test 3</td>
    <td>Yesterday</td>
</tr>
<tr>
    <td>3</td>
    <td>Test 1</td>
    <td>Next Saturday</td>
</tr>
</table>

I can do in CSS, jQuery or another language, but I need help.

Thanks

Answer 1

You can set two classes for TRs, eg rowOdd & rowEven

$days = array(1=>'Day1', 2=>'Day2', 3=>'Day3');
$trClass='Odd';
echo '<table>';
foreach ($days as $key=>$value) {
    echo '<tr class="row'.$trClass.'"><td>'.$key.'</td><td>'.$value.'</td></tr>';
    if ($trClass=='Odd') { $trClass='Even'; } else { $trClass='Odd'; }
}
echo '</table>';

CSS

.rowOdd { background-color: #F00; }
.rowEven { background-color: #0F0; }

Answer 2

Remember you can always search for answers to your question in stack overflow. odds are you are not the first to have this kind of issue.

please refer to the following:

Adding PHP alternate table row colours to existing HTML table

Answer 3

You can use a flag veriable for count.

For example:

$count = 0;
while($rows = mysql_fetch_array($query)){
    $count++;
    if(($count%2) == 0){
        echo '<tr style="background:#FFF">';
        echo    '<td>';
        echo    '</td>';
        echo '</tr>';
    }
    else{
        echo '<tr style="background:#000">';
        echo    '<td>';
        echo    '</td>';
        echo '</tr>';
    }
}

Answer 4

Try this one:

$bgcolor       = ""; 
$new_bgcolor   = "#F1F1F1";
$bgcolor_trans = "";

if ( $current_row > $last_row ){
   $bgcolor_trans = $bgcolor;
   $bgcolor       = $new_bgcolor;
   $new_bgcolor   = $bgcolor_trans;    
}