查询:
SELECT * FROM ac_journal WHERE datetime < (SELECT datetime FROM ac_journal WHERE jid = 1089 AND rid IN ('2','3','4')) ORDER BY datetime DESC LIMIT 1
当我在 phpmyadmin 中执行这个查询时,我得到一行
在我的代码中,它没有返回任何东西。
function ac_journal_get_previous_entry($jid)
{
global $user; //1
echo $jid; //1089
echo "<br />'" . implode("','", array_keys($user->roles)) . "'"; //'2','3','4'
if ($jid > 0)
{
$result = db_query("SELECT * FROM {ac_journal} WHERE datetime < (SELECT datetime FROM {ac_journal} WHERE jid = ? AND rid IN (?)) ORDER BY datetime DESC LIMIT 1", array($jid, "'" . implode("','", array_keys($user->roles)) . "'"));
$obj = $result->fetchAll();
echo $result->rowCount(); //0
if (is_array($obj) && count($obj) > 0)
{
echo "HERE"; //never gets here
return "<a href='https://example.com/journal/" . $obj[0]->jid . "'>Previous</a>";
}
}
}
最佳答案
我不得不把它改成这样:
$result = db_query('SELECT * FROM {ac_journal} WHERE datetime < (SELECT datetime FROM {ac_journal} WHERE jid = :jid) AND rid IN (:rid) ORDER BY datetime DESC LIMIT 1', array(':jid' => $jid, ':rid' => array_keys($user->roles)));
关于php - 为什么php没有返回结果,而mysql有?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/28184044/