Question

我正在尝试根据每行的时间对表格进行条带化。例如：

Blah -  time 1
Blah2 - time 1
Blah3 - time 2
Blah4 - time 3
Blah5 - time 4

我需要时间1为一种颜色（例如蓝色）时间2为黑色，时间为3以切换回蓝色。我试图根据时间的变化切换颜色。到目前为止我的PHP：

    while($main_Row = $main_Results->fetch_assoc()){
        if( $pickup_Time == $main_Row['pickup_Time'] ){
            $stripe = "blue";   
        }
        else{
            $stripe = "black";  
            $pickup_Time = $main_Row['pickup_Time'];
        }

        echo '<tr class="'.$stripe.'">';
        echo '<td>Blah'.$i.'</td>';
        echo '<td>'.$main_Row['pickup_Time'].'</td>';
        echo '</tr>';
    }

我目前所拥有的并没有给我我想要的结果。我觉得我错过了什么，任何帮助都会非常感激。

Answer 1

$pickup_Time = "";
$stripe = "";
while($main_Row = $main_Results->fetch_assoc()){
    if( $pickup_Time != $main_Row['pickup_Time'] ){
        $stripe = $stripe == "blue" ? "black" : "blue";   
    }

    echo '<tr class="'.$stripe.'">';
    echo '<td>Blah'.$i.'</td>';
    echo '<td>'.$main_Row['pickup_Time'].'</td>';
    echo '</tr>';

    $pickup_Time = $main_Row['pickup_Time'];
}

Answer 2

快速地将某些东西扔在一起，它有点冗长，但我想让一般意图和过程清晰。

这将按行进行条带化，每列条带化，您可以将类添加到td。如果要在再次循环之前更改条纹数量，请将模数更改为您想要的任何数字。

<!doctype html>
<html lang="en">
    <head>
        <meta charset="UTF-8">
        <title>Document</title>

        <style>
            .red {
                background-color: red;
            }

            .blue {
                background-color: blue;
            }
        </style>
    </head>
    <body>
        <?php

        $mysqli = new mysqli('', '', '', '');

        $qry = "SELECT * FROM data";
        $result = $mysqli->query($qry);

        $counter = 1;

        echo "<table>";
        while ( $row = $result->fetch_assoc() ) {

            $class = "";
            if( $counter % 3 == 1 ) {
                $class = "blue";
            } else if ( $counter % 3 === 2 ) {
                $class = "red";
            }

            echo '<tr class="' . $class . '">';
            echo '<td>' . $row['id'] . '</td>';
            echo '<td>' . $row['id'] . '</td>';
            echo '<td>' . $row['id'] . '</td>';
            echo '</tr>';

            $counter += 1;
        }
        echo "</table>";

        $result->free();

        $mysqli->close();
        ?>
    </body>
</html>

在PHP中切换类名

2 个答案: