与printf成千上万的分隔符

Question

如何在一个千位分隔符(如逗号)printf？

例:

printf("<td class='number'>%d</td>", $totals['Sold']); //need thousand separated 
printf("<td class='number'>%.2f</td>", $totals['Fees']); //need thousand separated

更新这是我原来的:

foreach(array_keys($totals) as $key){
        if(is_numeric($totals[$key])){
            $totals[$key] = number_format($totals[$key],2);
        }
    }

    echo "</tbody>
        <tfoot><tr>";
    echo "<td class='text' colspan='4'>Totals:</td>";
    echo "<td class='number'>{$totals['Bought']}</td>";
    echo "<td class='number'>{$totals['Sold']}</td>";
    echo "<td class='number'>{$totals['Fees']}</td>";
    echo "<td class='number'>{$totals['Realized']}</td>";
    echo "<td class='number'>{$totals['Net']}</td>";
    echo "<td colspan='3'>{$totals['EOD Price']}</td>";
    echo "</tr>
        </tfoot>";

我希望它能像:

echo "</tbody>
        <tfoot><tr>";
    echo "<td class='text' colspan='3'>Totals:</td>";
    printf("<td class='number'>%d</td>", $totals['Bought']) ;
    printf("<td class='number'>%d</td>", $totals['Sold']) ;
    printf("<td class='number'>%.2f</td>", $totals['Fees']) ;
    printf("<td class='number'>%.2f</td>", $totals['Realized']) ;
    printf("<td class='number'>%.2f</td>", $totals['Net']) ;
    printf("<td colspan='3'>%.2f</td>", $totals['EOD Price']) ;
    echo "</tr>
        </tfoot>";

但我需要逗号

Answer 1

让你的代码漂亮,不要回应所有.刚刚打破PHP上下文来做,然后使用number_format而不是printf只是echo:

</tbody>
<tfoot>
    <tr>
        <td ...>Totals</td>
        <td ...><?php echo number_format($totals['Bought'], 0); ?></td>
        <td ...><?php echo number_format($totals['Sold'], 0); ?></td>
        <td ...><?php echo number_format($totals['Fees'], 2); ?></td>
        ...
    </tr>
</tfoot>

Answer 2

您可以使用number_format函数.

string number_format ( float $number , int $decimals = 0 , string $dec_point = '.' , string $thousands_sep = ',' )

http://php.net/manual/en/function.number-format.php