在PHP中改变颜色

Question

The following are a couple of code snippets from some very basic PHP. I decided to add alternating row colours to make things a bit clearer. However the problem I have is that whatever I set the colour values to the rows alternate between a dark red and fuchsia background. This happens on both Windows and Linux and I cannot understand why?

$row_count = 1; // track rows
//$colour_odd = "#FFE680";
$colour_odd = "F0FFFF";
//$colour_even = "#FFF2BF";
$colour_even = "00FFFF";

while ($row = mysql_fetch_assoc($result)) {
    $row_colour = (($row_count % 2) == 0) ? colour_even: colour_odd;
    echo '
        <tr bgcolor="' . $row_colour . '">
            <td width="150" align="center">' . $row['FirstName'] . '</td>
            <td align="center"><a href="' . $row['LastName'] . '">' .$row['LastName'] . '</a></td>
         </tr>';
    $row_count++;
}

Answer 1

Putting my comment to an answer:

colour_even: colour_odd those are treated as constants. You probably forgot the $ signs.

Using error reporting would have told you something like "Undefined constant colour_even..." etc.

Modify it to read as: $colour_even: $colour_odd;

Add error reporting to the top of your file(s) which will help find errors.

<?php 
error_reporting(E_ALL);
ini_set('display_errors', 1);

// rest of your code

Sidenote: Error reporting should only be done in staging, and never production.