php - 组织州和城市并以某种方式显示 PHP

Question

我有这段代码，应该显示 $fstate，然后在它下面显示所有 $fcity。它显示 $fcity 3 次，然后创建一个新列。我的问题是我可以显示州和城市，但无法在适当的州下显示城市。现在它显示所有州，然后显示其下的城市。这是代码:

<?php
$fquery = "SELECT state, city, count(city) as num FROM needs WHERE country='$usercountry' AND status='posted' GROUP BY state, city ORDER BY state, city";
if ($result = mysql_query($fquery)) {
    $num_rows = mysql_num_rows($result);

    echo "<table>";
    $i = 1;
    $cols = 3;
$prev = "";

    while ($frows = mysql_fetch_array($result)) {
        $fcity = $frows['city'];
        $fstate = $frows['state'];
        $fcitycount = $frows['num'];  // num is holding your count by city

if ($fstate != $prev) {
echo "<tr>$fstate</tr><tr>";
$prev="$fstate";
}

        echo "<td><a href='node/browseresults.php?city=$fcity&state=$fstate'>$fcity, $fstate ($fcitycount)</a> </td>";
echo ($i < $num_rows) ? ((($i % $cols) == 0) ? '</tr>' : '') : '';
        $i++;
    }
    echo "</table>";
}

?>

这就是我现在得到的(示例):

ARMOSCTNTX

Brookland, AR (1)   Fayetteville , AR (2)   Harrisburg, AR (2)
Hot Springs, AR (1) Jonesboro, AR (1)   Searcy, AR (2)
St Louis, MO (3)
murrells inlet, SC (1)  Myrtle Beach, SC (1)
Memphis, TN (1)
Arlington, TX (1)

但我需要它看起来像这样:

AR
Brookland, AR (1)   Fayetteville , AR (2)   Harrisburg, AR (2)
Hot Springs, AR (1) Jonesboro, AR (1)   Searcy, AR (2)

MO
St Louis, MO (3)

SC
murrells inlet, SC (1)  Myrtle Beach, SC (1)

TN
Memphis, TN (1)

TX
Arlington, TX (1)

Answer 1

if ($fstate != $prev) {
echo "<tr>$fstate</tr><tr>";

您生成的表格格式错误。如果您的表格内容不在 <td> 内或<th>标签，当它被渲染时，它们出现在错误的位置。试试这个:

if ($fstate != $prev) {
echo "<tr><th>$fstate</th></tr><tr>";