Question

这对于专业人士来说很难，但很容易。

我在mysql中有以下字段：产品名称，mycost，sellprice和stock。因为我需要知道每个产品在我的商店投资有多少，所以我创建了后续计算并且工作正常：

 <td><?php echo $product['name'] ?></td>
    <td><?php echo $product['stock'] ?></td>
    <td><?php echo $product['mycost'] ?></td>
    <td><?php echo $product['sellprice'] ?></td>

这里我们根据mycost（我为产品支付的价格）*库存计算我在商店里的投资（金钱）多少钱

<td><?php echo number_format($product['mycost'] * $product['stock'],0,',','.'); ?></td>

它工作正常，如果产品的mycost为10且库存为100，那么我即时获得的结果是投资为1000

现在因为产品的结果（1000）是动态的（不存储在mysql中）我有以下问题：

搜索结果显示例如3种不同的产品，3种不同的动态投资结果非存储在mysql中。如何将此结果汇总并显示在页面顶部？

如果结果存储在mysql中很容易，但因为它是这样的：

<td><?php echo number_format($product['mycost'] * $product['stock'],0,',','.'); ?></td>

我认为没办法做到这一点，为什么我在这里问专业人士

有什么想法吗？

编辑：这是完整的代码

<?php
$cualcategoria = mysqli_real_escape_string($database,$_GET['categoria']);
$verproductos = mysqli_query($database, "SELECT * FROM `productos`");
while($mostrar = mysqli_fetch_assoc($verproductos)) {
?>
<table class="table1000">
  <tr>
    <td style="width:120px;"><div id="rightImage"><img style="border:2px solid #cccccc;" alt="image" src="fotos/<?php echo $mostrar['codigo'] ?>.jpg" width="90" height="90"></div></td>
    <td valign="top" style="width:900px;"><table class="table900">
      <tr>
        <td class="header150">Producto</td>
        <td class="header150">Marca</td>
        <td class="header150">Modelo</td>
        <td class="header150">Cantidad</td>
        <td class="header150">Capital</td>
        <td class="header150">Código</td>
        </tr>
      <tr>
        <td class="header150small"><?php echo $mostrar['producto'] ?></td>
        <td class="header150small"><?php echo $mostrar['marca'] ?></td>
        <td class="header150small"><?php echo $mostrar['modelo'] ?></td>
        <td class="header150small"><?php echo number_format($mostrar['stock'],0,',','.'); ?></td>
        <td class="header150small">$ <?php echo number_format($mostrar['costo'] * $mostrar['stock'],0,',','.'); ?></td>
        <td class="header150small"><a class="header150small" href="generar.php?codigo=<?php echo $mostrar['codigo'] ?>"><?php echo $mostrar['codigo'] ?></a></td>
        </tr>
      <tr>
        <td class="header150">Precio Costo</td>
        <td class="header150">Precio Neto</td>
        <td class="header150">IVA Incluido</td>
        <td class="header150">Ganancia</td>
        <td class="header150">Ganancia Total</td>
        <td class="header150">Proveedor</td>
      </tr>
      <tr>
        <td class="header150small">$ <?php echo number_format($mostrar['costo'],0,',','.'); ?></td>
        <td class="header150small">$ <?php echo number_format($mostrar['venta'],0,',','.'); ?></td>
        <td class="header150small">$ <?php echo number_format($mostrar['coniva'],0,',','.'); ?></td>
        <td class="header150small">$ <?php echo number_format($mostrar['venta'] - $mostrar['costo'],0,',','.'); ?>
        </td>
        <td class="header150small">$ <?php echo number_format(($mostrar['venta'] - $mostrar['costo']) *  $mostrar['stock'],0,',','.'); ?></td>
        <td class="header150small"><?php echo $mostrar['proveedor'] ?></td>
      </tr>
    </table>
     </td>
  </tr>
</table>
<?php
}
?>

Answer 1

Muy bien，maradoiano，tuve que realizar algunas acrobacias para corrertucódigo，lacosaestáasí：

Para obtener la suma de todas las inversiones sencillamente se necesita una variable que acumule los resultados de todos los（costo * stock），llamémosla$total。
Para desplegar este total ARRIBA de la tabla es necesario GUARDAR toda la tabla en una variable string，llamémosla$tabla。 Éstaseráunavariable enorme porque concatena el <table>，los <tr> y los <td>，ademásdelos datosqueéstoscontienen。
Al final del ciclo que latre todos los datos de la base de datos，se despliega primero $totalydespués$tabla。

Elsiguientecódigohacelo anterior，notas：

Como no tengo base de datos tuve que inventarme un array con 3 productos。 Maradoiano debe comentar este array y descomentar su base de datos。
Como estoy usando un array tuve queusartambiénunforeach。 Maradoiano debe comentarlo y volver a usar su while。
Toda la tabla debe ser creada como string，por eso todaslaslíneasaparecenentre comillas simples，ej：'＆lt; td＆gt; ...＆lt; / td＆gt;'。
Para que maradoiano pruebaestecódigodebecrear un archivo de texto，ponerle cualquier nombre pero conextensisei PHP，copiar y pegar elsiguientecódigo，y correrlo desde el navegador。

Este eselcódigo：

<?php 
//$cualcategoria = mysqli_real_escape_string($database,$_GET['categoria']);
//$verproductos = mysqli_query($database, "SELECT * FROM `productos`");

$verproductos = Array( Array( "codigo"    => "0401",
                              "producto"  => "tenis",
                              "marca"     => "Nike",
                              "modelo"    => "Air",
                              "stock"     => 50,
                              "costo"     => 700,
                              "venta"     => 800,
                              "coniva"    => 125,
                              "proveedor" => "Importadora de Zapatos"
                            ),
                       Array( "codigo"    => "0992",
                              "producto"  => "camisa",
                              "marca"     => "Eiffel",
                              "modelo"    => "",
                              "stock"     => 14,
                              "costo"     => 250,
                              "venta"     => 300,
                              "coniva"    => 60,
                              "proveedor" => "Importadora de Camisas"
                            ),
                       Array( "codigo"    => "5800",
                              "producto"  => "anteojos",
                              "marca"     => "Bay",
                              "modelo"    => "Solar",
                              "stock"     => 40,
                              "costo"     => 400,
                              "venta"     => 550,
                              "coniva"    => 95,
                              "proveedor" => "Importadora de Anteojos"
                            )
                     );
$tabla = '<table class="table1000">';
$total = 0;

//while ( $mostrar = mysqli_fetch_assoc( $verproductos ) )
foreach ( $verproductos as $mostrar )
{ $tabla .= '<tr>' .
            ' <td style="width:120px;">' .
            ' <div id="rightImage"><img style="border:2px solid #cccccc;" alt="image"' .
            '      src="fotos/' . $mostrar['codigo'] . '.jpg" width="90" height="90"></div></td>' .
            ' <td valign="top" style="width:900px">' .
            '  <table class="table900">' .
            '   <tr>' .
            '    <td class="header150">Producto</td>' .
            '    <td class="header150">Marca</td>' .
            '    <td class="header150">Modelo</td>' .
            '    <td class="header150">Cantidad</td>' .
            '    <td class="header150">Capital</td>' .
            '    <td class="header150">Código</td>' .
            '   </tr>' .
            '   <tr>' .
            '    <td class="header150small">' . $mostrar['producto'] . '</td>' .
            '    <td class="header150small">' . $mostrar['marca'] . '</td>' .
            '    <td class="header150small">' . $mostrar['modelo'] . '</td>' .
            '    <td class="header150small">' . number_format($mostrar['stock'],0,',','.') . '</td>' .
            '    <td class="header150small">$' .
            number_format($mostrar['costo']*$mostrar['stock'],0,',','.') . '</td>';
  $total += $mostrar['costo'] * $mostrar['stock'];
  $tabla .= '    <td class="header150small"><a class="header150small"' .
            '         href="generar.php?codigo=' . $mostrar['codigo'] . '">' . $mostrar['codigo'] . '</a></td>' .
            '   </tr>' .
            '   <tr>' .
            '    <td class="header150">Precio Costo</td>' .
            '    <td class="header150">Precio Neto</td>' .
            '    <td class="header150">IVA Incluido</td>' .
            '    <td class="header150">Ganancia</td>' .
            '    <td class="header150">Ganancia Total</td>' .
            '    <td class="header150">Proveedor</td>' .
            '   </tr>' .
            '   <tr>' .
            '    <td class="header150small">$' . number_format($mostrar['costo'],0,',','.') . '</td>' .
            '    <td class="header150small">$' . number_format($mostrar['venta'],0,',','.') . '</td>' .
            '    <td class="header150small">$' . number_format($mostrar['coniva'],0,',','.') . '</td>' .
            '    <td class="header150small">$' . number_format($mostrar['venta'] - $mostrar['costo'],0,',','.') .
            '    </td>' .
            '    <td class="header150small">$' . number_format(($mostrar['venta'] - $mostrar['costo']) * 
                                                 $mostrar['stock'],0,',','.') . '</td>' .
            '    <td class="header150small">' . $mostrar['proveedor'] . '</td>' .
            '   </tr>' .
            '  </table>' .
            ' </td>' .
            '</tr>' .
            '<tr><td colspan="2"><hr/></td></tr>';
}
echo "Inversión total = " . $total .
     "<br/>" .
     $tabla . '</table>';
?>

Answer 2

一种方法是使用变量在旅途中总结（这里我使用totalInvestment作为变量）

$totalInvestment = 0;

foreach($products as $product):
    $totalInventsment += product['mycost'] * $product['stock']; ?>

     ...
    <td><?php echo $product['name'] ?></td>
    <td><?php echo $product['stock'] ?></td>
    <td><?php echo $product['mycost'] ?></td>
    <td><?php echo $product['sellprice'] ?></td>
    ...

<?php endforeach;

然后你可以像这样回复它

<?php echo number_format($totalInventsment,',','.'); ?>

修改如果你想要它在顶部你可以在文件的顶部添加它（将使网站加载慢一点（x）

$totalInvestment = 0; foreach($products as $product){ $totalInventsment += product['mycost'] * $product['stock']; } echo number_format($totalInventsment,',','.');

PHP总和回显结果（困难）

2 个答案: