mysql批量更新写法
<pre>
$namedmp=filter($_POST['namedmp']);
$namedsp=filter($_POST['namedsp']);
$nameula=filter($_POST['nameula']);
$namenva=filter($_POST['namenva']);
$namedcrm=filter($_POST['namedcrm']);

$sql='UPDATE wz_chanpinjieshao
SET titile = CASE id
WHEN 1 THEN ?
WHEN 2 THEN ?
WHEN 3 THEN ?
WHEN 4 THEN ?
WHEN 5 THEN ?
END
WHERE id IN (1,2,3,4,5)';
$stmt = \Db::getStmt($sql);
$isOk=$stmt->execute(array($namedmp,$namedsp,$nameula,$namenva,$namedcrm));
if($isOk){
echo json_encode(array('success' => 1, 'msg' => '更新成功', 'data' => ''));
exit();
}else{
echo json_encode(array('success' => 1, 'msg' => '网络繁忙', 'data' => ''));
exit();
}
</pre>

更新多个字段sql语句
<pre>
UPDATE wz_chanpinjieshao
SET title = CASE id WHEN 1 THEN 11 WHEN 2 THEN 22 WHEN 3 THEN 33 WHEN 4 THEN 44 WHEN 5 THEN 55 END,
summary = CASE id WHEN 1 THEN 11 WHEN 2 THEN 22 WHEN 3 THEN 33 WHEN 4 THEN 44 WHEN 5 THEN 55 END
WHERE id IN (1,2,3,4,5)
</pre>

下面是封装版
<pre>
public function updatechanpinjieshao(){
$nameupdate_ziduan_list=explode(',',$_POST['nameupdate_ziduan']);
$namelist=array();
$duogeziduan='';
foreach ($nameupdate_ziduan_list as $k=>$v) {

$namedmp = filter($_POST['namedmp_' . $v]);
array_push($namelist,$namedmp);
$namedsp = filter($_POST['namedsp_' . $v]);
array_push($namelist,$namedsp);
$nameula = filter($_POST['nameula_' . $v]);
array_push($namelist,$nameula);
$namenva = filter($_POST['namenva_' . $v]);
array_push($namelist,$namenva);
$namedcrm = filter($_POST['namedcrm_' . $v]);
array_push($namelist,$namedcrm);

$duogeziduan.= $v . ' = CASE id WHEN 1 THEN ? WHEN 2 THEN ? WHEN 3 THEN ? WHEN 4 THEN ? WHEN 5 THEN ? END,';
}
$duogeziduan=rtrim($duogeziduan,",");

$sql = 'UPDATE wz_chanpinjieshao SET '.$duogeziduan.' WHERE id IN (1,2,3,4,5)';

$stmt = \Db::getStmt($sql);

$isOk = $stmt->execute($namelist);

if($isOk){
echo json_encode(array('success' => 1, 'msg' => '更新成功', 'data' => ''));
exit();
}else{
echo json_encode(array('success' => 1, 'msg' => '网络繁忙', 'data' => ''));
exit();
}

}
</pre>