1
考虑这个简单的PHP页面:多个查询不起作用
<?php
$db = new mysqli("localhost", "myuser", "mypwd", "mydb");
if ($db->connect_error)
// Dying sequence;
// Executing query
$qres = $db->multi_query("SET @rank = -1; SELECT * FROM (SELECT @rank := @rank + 1 as rank, field1, field2 FROM mytable WHERE field1 = 'value') AS T1 WHERE rank = 2;");
$db->commit();
if (!qres) {
// Problems in query
// Dying
$db->close();
return;
}
if (!($qres->num_rows == 1)) {
// Error fetched
$numrows = $qres->num_rows;
$db->close();
// Dying
return;
}
// Returning
echo "ALLOK";
$db->close();
?>
好了,这是行不通的。 如果我使用query
或multi_query
你能帮我吗?
“if(!qres)”可能是致命的错字。 –