Question

我有这段代码，

$sqlstr = mysql_query(
    "SELECT * FROM sales where passport = '{$therecord['passport']}'");
if (mysql_numrows($sqlstr) != 0) {
    echo "<b>Sales for {$therecord['firstname']} {$therecord['lastname']}</b>";
    while ($row = mysql_fetch_array($sqlstr)) {
        echo "<table><tr>";
        echo "<td>{$row['product']}</td>";
        echo "<td>{$row['quantity']}</td>";
        echo "<td>{$row['cost']}</td>";
        echo "</tr>";
        echo "</table>";
    }
}

$sqltotal = mysql_query(
    "SELECT SUM(cost) FROM sales where passport = '{$therecord['passport']}'");
echo "<b>Total Owing: {$sqltotal}</b>";

我想为每个表格列添加一个标题，也许它们之间可能有一些间距。

我该怎么做？

此外，我正在尝试使用SQL SUM函数并输出总数，但此时它会输出类似＃id24的内容......

Answer 1

在开始while循环之前回复它：

echo '<tr><th>Name:</th><th>Quantity:</th><th>Cost:</th></tr>';

至于你的总和问题，这是因为你正在回显资源ID。您还需要在该资源上调用mysql_fetch_array()（或类似函数），就像使用另一个资源一样。

Answer 2

对于总计，而不是运行第二个查询，只需将成本转储到临时变量并在循环查询数组时递增...

$sqlstr = mysql_query(
    "SELECT * FROM sales where passport = '{$therecord['passport']}'");
if (mysql_numrows($sqlstr) != 0) {
    echo "<b>Sales for {$therecord['firstname']} {$therecord['lastname']}</b>";
    while ($row = mysql_fetch_array($sqlstr)) {
        echo "<table><tr>";
        echo "<td>{$row['product']}</td>";
        echo "<td>{$row['quantity']}</td>";
        echo "<td>{$row['cost']}</td>";
        echo "</tr>";
        echo "</table>";
        $_t += $row['cost'];
    }
}
echo "<b>Total Owing: {$_t}</b>";

缺点：你只得到循环结束后的总价值。

对于标题..只需在循环之前打印它们。

Answer 3

您可以在while循环之前回显表格标题;

<thead>
    <tr>
        <th>Name:</th>
        <th>Quantity:</th>
        <th>Cost:</th>
    </tr>
</thead>
<?php
$sqlstr = mysql_query("SELECT * FROM sales where passport = '{$therecord['passport']}'");
if (mysql_numrows($sqlstr) != 0) {
    ....
}
....
?>

这将对SUM问题进行排序（使用mysql_result）。目前您只输出资源。

$sqltotal = mysql_result(mysql_query("SELECT SUM(cost) FROM sales where passport = '{$therecord['passport']}'"),0);
echo "<b>Total Owing: {$sqltotal}</b>";

Answer 4

sqlstr = mysql_query(
    "SELECT * FROM sales where passport = '{$therecord['passport']}'");
if (mysql_numrows($sqlstr) != 0) {
    echo "<b>Sales for {$therecord['firstname']} {$therecord['lastname']}</b>";
    while ($row = mysql_fetch_array($sqlstr)) {
        echo "<table><tr>";
        echo "<td>{$row['product']}</td>";
        echo "<td>{$row['quantity']}</td>";
        echo "<td>{$row['cost']}</td>";
        echo "</tr>";
        echo "</table>";
    }
}
echo "<b>Total Owing: ".mysql_num_rows($sqlstr)."</b>";

只需运行一个或多个行，因为查询与上述相同！

Answer 5

总和：运行查询后，您需要获得结果

$sqltotal = mysql_query("SELECT SUM(cost) as total FROM sales where passport = '{$therecord['passport']}'");
$row = mysql_fetch_array($sqltotal);
            echo "<b>Total Owing: {$row['total']}</b>";

Answer 6

$sqlstr = mysql_query( 
    "SELECT * FROM sales where passport = '{$therecord['passport']}'"); 
if (mysql_numrows($sqlstr) != 0) { 
    echo "<b>Sales for {$therecord['firstname']} {$therecord['lastname']}</b>"; 
    echo "<table>";
    echo "<tr>"; 
    echo "<th>Product</th>"; 
    echo "<th>Quantity</th>"; 
    echo "<th>Cost</th>"; 
    echo "</tr>"; 
    while ($row = mysql_fetch_array($sqlstr)) { 
        echo "<tr>"; 
        echo "<td>{$row['product']}</td>"; 
        echo "<td>{$row['quantity']}</td>"; 
        echo "<td>{$row['cost']}</td>"; 
        echo "</tr>"; 
    } 

    $sqltotal = mysql_query( 
        "SELECT SUM(cost) AS Total FROM sales where passport = '{$therecord['passport']}'"); 
    $totalRow = mysql_fetch_array($sqltotal)) { 
    echo "<tr>"; 
    echo "<td colspan=\"2\"></td>"; 
    echo "<td><b>Total Owing: {$totalRow['Total']}</b></td>"; 
    echo "</tr>"; 

    echo "</table>"; 
}

Answer 7

尝试这个总和：

$sqltotal = mysql_query("SELECT SUM(cost) AS totalcost FROM sales WHERE passport = '" . mysql_real_esacpe_string($therecord['passport] . "';
$row = mysql_fetch_array($sqltotal);
echo "<b>Total Owing: {$row['totalcost']}</b>";

向表列添加标题，并从SQL输出总计

7 个答案: