我有这个SQL查询工作，因为它应该当我运行到phpMyAdmin。
SELECT COUNT( * ) , LENGTH( Number ) AS Numbers
FROM `history_2015-07-22`
WHERE Number NOT LIKE '123%'
OR LENGTH( Number ) <50
GROUP BY Numbers
ORDER BY TIME = '2015-07-22 00:00:01' ASC
我现在想做一个简单的php页面，我想在浏览器上显示查询结果，但我不知道如何准确地回声它。所以我做了这个:
$result = $pdo->prepare("SELECT COUNT( * ) , LENGTH( Number ) AS Numbers
FROM `history_2015-07-22`
WHERE Number NOT LIKE '123%'
OR LENGTH( Number ) <50
GROUP BY Numbers
ORDER BY TIME = '2015-07-22 00:00:01' ASC ");
$result->execute();
foreach ($result as $Numbers)
{
echo '<div class="container">
'.$Numbers['COUNT(*)'].'
'.$Numbers['LENGTH(Number)'].'
</div>';
}
我要回显的是Count和Length。我肯定是一些很简单的东西，我错过了，却想不明白。
首先，你能解释一下你到底想用SQL查询做什么吗?
根据我的理解，你可以试试这个:
$result = $pdo->prepare("SELECT COUNT( * ) AS ct_all, LENGTH( `Number` ) AS Numbers
FROM `history_2015-07-22`
WHERE `Number` NOT LIKE ('123%')
AND Numbers < 50
GROUP BY Numbers
ORDER BY `TIME` ASC");
$result->execute();
$results = $result->fetchAll();
foreach ($results as $row) {
echo '<div class="container">';
echo $row['ct_all'] . ' // ';
echo $row['Numbers'];
echo '</div>';
}
$result = $pdo->prepare("SELECT COUNT( * ) as cnts, LENGTH( Number ) AS num
FROM `history_2015-07-22`
WHERE Number NOT LIKE '123%'
OR LENGTH( Number ) <50
GROUP BY num
ORDER BY TIME = '2015-07-22 00:00:01' ASC ");
$result->execute();
foreach ($result as $Numbers)
{
echo '<div class="container">
'.$Numbers['cnts'].'
'.$Numbers['num'].'
</div>';
}
请看，我指出了一些问题。
$result = $pdo->prepare("SELECT COUNT( * ) AS ct_all, LENGTH( `Number` ) AS Numbers
FROM `history_2015-07-22`
WHERE `Number` NOT LIKE ('123%')
AND Numbers < 50
GROUP BY Numbers
ORDER BY `TIME` ASC");
$result->execute();
// the problem is..
// you are trying to fetch $result but here $result is just executing
// you cannot retrive anything unless you didn't declare it
/* here $result has nothing in it; is just executed first
* declare it
*/
$result = $result->execute();
/* Then Fetch it
And then You Can Use You Fetch Var with index to retrive data.
e.g */
$allData = $result->fetchAll();
foreach ($allData as $SingleData)
{
// here you must place indexes of your Query
// e.g $SingleData['id'] or $SingleData[0]
echo '<div class="container">
'.$SingleData['COUNT(*)'].'
'.$SingleData['LENGTH(Number)'].'
</div>';
}