我在通过 mysqli 执行准备好的语句时遇到问题。
首先,我遇到了 Command 不同步错误。我正在存储结果并关闭连接,并且我已经停止收到此错误,所以希望问题已经停止。
但是,当命令不同步时,我的 sql 语法错误中的错误再次出现。这是我当前的代码:
我尝试了许多不同的方法来纠正这个 snytax 错误,从使用 CONCAT,它在失败时被注释掉,从在绑定之前将 % 符号分配给变量等等。没有任何效果。
尝试使用:
$numRecords->bind_param("s", "%".$brand."%");
通过引用传递会导致错误。
<?php
$con = mysqli_connect("localhost", "blah", "blah", "blah");
if (!$con) {
echo "Can't connect to MySQL Server. Errorcode: %s\n". mysqli_connect_error();
exit;
}
$con->query("SET NAMES 'utf8'");
$brand = "o";
$brand = "% ".$brand." %";
echo "\n".$brand;
$countQuery = "SELECT ARTICLE_NO FROM AUCTIONS WHERE upper(ARTICLE_NAME) LIKE ?";
//CONCAT('%', ?, '%')";
echo "\ntest";
if ($numRecords = $con->prepare($countQuery)) {
$numRecords->bind_param("s", $brand);
echo "\ntest bind";
$numRecords->execute();
echo "\ntest exec";
$numRecords->store_result();
$data = $con->query($countQuery) or die(print_r($con->error));
$rowcount = $data->num_rows;
$numRecords->free_result();
$numRecords->close();
echo "/ntest before rows";
$rows = getRowsByArticleSearch("test", "Auctions", " ");
$last = ceil($rowcount/$page_rows);
} else {
print_r($con->error);
}
foreach ($rows as $row) {
$pk = $row['ARTICLE_NO'];
echo '<tr>' . "\n";
echo '<td><a href="#" onclick="updateByPk(\'Layer2\', \'' . $pk . '\')">'.$row['USERNAME'].'</a></td>' . "\n";
echo '<td><a href="#" onclick="updateByPk(\'Layer2\', \'' . $pk . '\')">'.$row['shortDate'].'</a></td>' . "\n";
echo '<td><a href="#" onclick="deleterec(\'Layer2\', \'' . $pk . '\')">DELETE RECORD</a></td>' . "\n";
echo '</tr>' . "\n";
}
function getRowsByArticleSearch($searchString, $table, $max) {
$con = mysqli_connect("localhost", "blah", "blah", "blah");
//global $con;
$recordsQuery = "SELECT ARTICLE_NO, USERNAME, ACCESSSTARTS, ARTICLE_NAME, date_format(str_to_date(ACCESSSTARTS, '%d/%m/%Y %k:%i:%s'), '%d %m %Y' ) AS shortDate FROM $table WHERE upper(ARTICLE_NAME) LIKE '%?%' ORDER BY str_to_date(ACCESSSTARTS, '%d/%m/%Y %k:%i:%s')" . $max;
if ($getRecords = $con->prepare($recordsQuery)) {
$getRecords->bind_param("s", $searchString);
$getRecords->execute();
$getRecords->bind_result($ARTICLE_NO, $USERNAME, $ACCESSSTARTS, $ARTICLE_NAME, $shortDate);
while ($getRecords->fetch()) {
$result = $con->query($recordsQuery);
$rows = array();
while($row = $result->fetch_assoc()) {
$rows[] = $row;
}
return $rows;
}
}
}
确切的错误是:
You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '?' at line 11
第 11 行是定义 $countQuery 的行。
如您所见,品牌被称为“o”;
所以SQL语句应该是
SELECT ARTICLE_NO FROM AUCTIONS WHERE upper(ARTICLE_NAME) LIKE %o%;
当我手动放入时效果很好。