Yii 返回大数据集时出现内部服务器错误 (500)
我有一个 Yii Web 服务 actionQuery
,它根据四个参数查询模型。总共大约有 1700 个项目需要查询,而且我使用的是一个非常糟糕的网络主机 (iPage)。当我运行不带参数或极其常见的参数(例如字符串 name
中的“a”)的查询时,我希望看到所有或几乎所有行。相反,我返回了 500 内部服务器错误,该错误显然不是由 Yii 产生的,因此这是一个非常严重的错误。当我尝试将其缩小到大约 700 或 800 行时,需要一段时间,但它完成了。如何纠正大数据集产生 500 个内部服务器错误的错误?这是最大执行时间问题吗?我需要对 CDBCriteria
做一些不同的事情吗?
这是 actionQuery
,诚然,它的编码相当糟糕。
public function actionQuery()
{
$this->_checkAuth();
switch ($_GET['model'])
{
case 'dogFood':
$criteria = new CDbCriteria();
if ($_GET['name'] && $_GET['name'] !== '0') {
$criteria->addSearchCondition('name_df', $_GET['name']);
}
if ($_GET['ingredients'] && $_GET['ingredients'] !== '0') {
$ingredientsArray = explode(',',$_GET['ingredients']);
foreach ($ingredientsArray as $ingredient) {
$criteria->addSearchCondition('ingredients_df', $ingredient);
}
}
if ($_GET['brand'] && $_GET['brand'] != 0) {
$criteria->addColumnCondition(array('brand_df' => $_GET['brand']));
}
if ($_GET['brandstring'] && $_GET['brandstring'] !== 0) {
$criteriaForBrand = new CDbCriteria();
$criteriaForBrand->addSearchCondition('name_dfb', $_GET['brandstring']);
$brandInQuestion = DogfoodbrandDfb::model()->find($criteriaForBrand);
$brandId = $brandInQuestion->id_dfb;
$criteria->addColumnCondition(array('brand_df' => $brandId));
}
$models = DogfoodDf::model()->findAll($criteria);
break;
default:
$this->_sendResponse(501, sprintf(
'Error: Mode <b>query</b> is not implemented for model <b>%s</b>',
$_GET['model']));
exit;
}
if (empty($models)) {
$this->_sendResponse(200,
sprintf('No items were found for model <b>%s</b>', $_GET['model']));
}
else {
$rows = array();
foreach ($models as $model) {
$rows[] = $model->attributes;
}
$this->_sendResponse(200, CJSON::encode($rows));
}
}
I have a Yii web service actionQuery
that queries a model based on four parameters. There are about 1700 items to be queried total and I'm using a pretty bad web host (iPage). When I run a query with no parameters or extremely common parameters like "a" in string name
, I expect to see all or almost all of the rows. Instead I get back a 500 Internal server error that is obviously not being produced by Yii, so it's a pretty bad error. When I try to narrow it down to around 700 or 800 rows, it takes a while but it gets done. How can I correct this error of large data sets producing 500 internal server errors? Is it a max execution time issue? Is there something I need to be doing differently with CDBCriteria
?
Here is actionQuery
, which is admittedly coded quite poorly.
public function actionQuery()
{
$this->_checkAuth();
switch ($_GET['model'])
{
case 'dogFood':
$criteria = new CDbCriteria();
if ($_GET['name'] && $_GET['name'] !== '0') {
$criteria->addSearchCondition('name_df', $_GET['name']);
}
if ($_GET['ingredients'] && $_GET['ingredients'] !== '0') {
$ingredientsArray = explode(',',$_GET['ingredients']);
foreach ($ingredientsArray as $ingredient) {
$criteria->addSearchCondition('ingredients_df', $ingredient);
}
}
if ($_GET['brand'] && $_GET['brand'] != 0) {
$criteria->addColumnCondition(array('brand_df' => $_GET['brand']));
}
if ($_GET['brandstring'] && $_GET['brandstring'] !== 0) {
$criteriaForBrand = new CDbCriteria();
$criteriaForBrand->addSearchCondition('name_dfb', $_GET['brandstring']);
$brandInQuestion = DogfoodbrandDfb::model()->find($criteriaForBrand);
$brandId = $brandInQuestion->id_dfb;
$criteria->addColumnCondition(array('brand_df' => $brandId));
}
$models = DogfoodDf::model()->findAll($criteria);
break;
default:
$this->_sendResponse(501, sprintf(
'Error: Mode <b>query</b> is not implemented for model <b>%s</b>',
$_GET['model']));
exit;
}
if (empty($models)) {
$this->_sendResponse(200,
sprintf('No items were found for model <b>%s</b>', $_GET['model']));
}
else {
$rows = array();
foreach ($models as $model) {
$rows[] = $model->attributes;
}
$this->_sendResponse(200, CJSON::encode($rows));
}
}
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您很可能内存不足。 PHP 程序可以使用多少内存是有限制的:您应该在 error.log 中看到内存超出消息。
您可以尝试增加线程或此特定脚本允许的内存,但首先在错误日志中验证这是否是问题所在。
Most likely you are running out of memory. There is a limit set how much memory a PHP program can use: you should see memory exceeded messages in your error.log.
You can try and up the allowed memory for a thread, or for this specific script, but verify in your error log first that this is the issue.