我有一个脚本需要执行，它会完成很多任务并且会重复执行大约21k次。问题在于，对于每个索引，我都要做好几件不同的事情。每个索引都是数据库中的一个产品，我从API获取数据来更新价格并保存产品等等。我有几个区域，在几乎每个方法调用之前和之后都调用了
我已经尝试在循环结束时取消所有变量，也尝试将它们设置为null，但无论如何，每次迭代内存限制都会不断增加。
是否有任何方法可以清除这些内存？我认为取消变量应该能够释放内存，但似乎并不是这样？
编辑： 我忘记提到我开始调查的原因是服务器上出现了内存限制错误。它并不总是在相同的时间点发生，甚至不是每次运行都会发生。这就是我试图调查的原因。
这个脚本需要大约一个小时才能运行完，我通常在早上运行它，此时没有其他任务在进行，而且现在它只在一个暂存服务器上运行，所以没有人在访问该服务器。
我可以发布代码，但它非常大。
memory_get_usage()，我发现每次调用都会增加内存使用量。没有一个方法比其他方法更占用内存或者差异不明显。我已经尝试在循环结束时取消所有变量，也尝试将它们设置为null，但无论如何，每次迭代内存限制都会不断增加。
是否有任何方法可以清除这些内存？我认为取消变量应该能够释放内存，但似乎并不是这样？
编辑： 我忘记提到我开始调查的原因是服务器上出现了内存限制错误。它并不总是在相同的时间点发生，甚至不是每次运行都会发生。这就是我试图调查的原因。
这个脚本需要大约一个小时才能运行完，我通常在早上运行它，此时没有其他任务在进行，而且现在它只在一个暂存服务器上运行，所以没有人在访问该服务器。
我可以发布代码，但它非常大。
<?php
if( !function_exists('memory_get_usage') ){
include('function.php');
}
echo "At the start we're using (in bytes): ",
memory_get_usage() , "\n\n";
$path = realpath(dirname(__FILE__) . '/../../../../Mage.php');
require_once($path);
Mage::app();
require_once '/lib/ProductUpdate.php';
echo "Starting product update process \n\n";
$productUpdate = new ProductUpdate();
$dealerStoreId = 3;
$volumeDiscountGroupId = 4;
$retailGroupId = Mage_Customer_Model_Group::CUST_GROUP_ALL;
$wholesaleGroupId = 2;
echo "Grabbing all products \n\n";
Mage::app()->setCurrentStore(Mage_Core_Model_App::ADMIN_STORE_ID);
// get the products from the InOrder stored procedure qty since datetime and don't pass a date to get all products, also pass the id of the cron job
$ioProducts = $productUpdate->getProductUpdateProducts('WEB2');
echo "---------------------------\n\n";
echo "Begin Updating Products \n\n";
echo "---------------------------\n\n";
$productCount = 0;
$productUpdate->saveScriptStarted(2);
echo "Before we go into the initial loop we are using (in bytes): ",
memory_get_usage() , "\n\n";
foreach ($ioProducts as $ioProduct) {
$updateProduct = false;
$updateTierPrice = false;
$sku = trim($ioProduct['inp_short_item_number']) . trim($ioProduct['isc_SIZE']) . trim($ioProduct['isc_COLOR']);
echo "Checking item number " . $sku . " \n\n";
echo "Before Loading Product " . $sku . " we are using (in bytes): ",
memory_get_usage() , "\n\n";
$product = $productUpdate->getProduct();
$productId = $product->getIdBySku($sku);
echo "After Getting Id from sku " . $sku . " we are using (in bytes): ",
memory_get_usage() , "\n\n";
if ($productId) {
//$product = $productUpdate->getProduct()->load($productId);
echo "After Loading Product " . $sku . " we are using (in bytes): ",
memory_get_usage() , "\n\n";
echo "WE HAVE A PRODUCT!: " . $product->getName() . "\n\n";
try {
echo "Before Getting Additional Info from InOrder for Product " . $sku . " we are using (in bytes): ",
memory_get_usage() , "\n\n";
// Since the product is same for parent products as it is for children you should just be able to get the price of the parent and use that.
$additionalInfo = $productUpdate->getItemDetails($ioProduct['inp_short_item_number'], 'WEB2');
echo "After Getting Additional Info from InOrder for Product " . $sku . " we are using (in bytes): ",
memory_get_usage() , "\n\n";
echo "Before Getting Extra Charges from InOrder for Product " . $sku . " we are using (in bytes): ",
memory_get_usage() , "\n\n";
$oversizeCharge = $productUpdate->getExtraCharges($ioProduct['inp_short_item_number']);
echo "After Getting Extra Charges from InOrder for Product " . $sku . " we are using (in bytes): ",
memory_get_usage() , "\n\n";
} catch (Exception $e) {
echo $e->getMessage() . "\n\n";
continue;
}
if (is_array($additionalInfo) && count($additionalInfo) > 0) {
if (isset($oversizeCharge[0]['Shipping Unit Charge']) && $product->getOversizeCharge() != $oversizeCharge[0]['Shipping Unit Charge']) {
$product->setOversizeCharge($oversizeCharge[0]['Shipping Unit Charge']);
$updateProduct = true;
unset($oversizeCharge);
}
if ($product->getPrice() != $additionalInfo[0]['pri_current_price']) {
$product->setPrice($additionalInfo[0]['pri_current_price']);
$updateProduct = true;
unset($additionalInfo);
}
echo "Before Setting Stock Status for Product " . $sku . " we are using (in bytes): ",
memory_get_usage() , "\n\n";
$product = $productUpdate->setStockStatus($product, $ioProduct);
echo "After Setting Stock Status for Product " . $sku . " we are using (in bytes): ",
memory_get_usage() , "\n\n";
if ($product->getNeedsUpdate()) {
$updateProduct = true;
}
if ($updateProduct) {
try{
echo "Before Saving Product " . $sku . " we are using (in bytes): ",
memory_get_usage() , "\n\n";
$productUpdate->saveProduct($product, $ioProduct);
echo "After Saving Product " . $sku . " we are using (in bytes): ",
memory_get_usage() , "\n\n";
}catch (Exception $e){
echo $e->getMessage() . "\n\n";
continue;
}
}
// Go through and do the same thing for the other 2 web classes to set pricing for the Dealer and Volume wholesale customers
$updateProduct = false;
try {
echo "Before getting Tier Price info for " . $sku . " we are using (in bytes): ",
memory_get_usage() , "\n\n";
$product = $productUpdate->getProduct()->setStoreId($dealerStoreId)->load($productId);
$additionalInfo = $productUpdate->getItemDetails($ioProduct['inp_short_item_number'], 'WEB3');
//$additionalTierInfo = $productUpdate->getItemDetails($ioProduct['inp_short_item_number'], 'WEB4');
// Get Real Tier Prices based on Customer Type
$retailPriceBreaks = $productUpdate->getItemPriceBreaks($ioProduct['inp_short_item_number'], Mage::getStoreConfig(Lancaster_InOrder_Helper_Data::XML_PATH_RETAIL_PRICE_LIST));
$wholesalePriceBreaks = $productUpdate->getItemPriceBreaks($ioProduct['inp_short_item_number'], Mage::getStoreConfig(Lancaster_InOrder_Helper_Data::XML_PATH_WHOLESALE_PRICE_LIST));
$volumeWholesalePriceBreaks = $productUpdate->getItemPriceBreaks($ioProduct['inp_short_item_number'], Mage::getStoreConfig(Lancaster_InOrder_Helper_Data::XML_PATH_VOLUME_WHOLESALE_PRICE_LIST));
echo "After getting Tier Price infor for " . $sku . " we are using (in bytes): ",
memory_get_usage() , "\n\n";
} catch (Exception $e) {
echo $e->getMessage() . "\n\n";
continue;
}
if ($product->getPrice() != $additionalInfo[0]['pri_current_price']) {
$product->setPrice($additionalInfo[0]['pri_current_price']);
$updateProduct = true;
}
//The only way to setup multiple price for one website is to set a tier price so we set it to a specific group and the dealer site then go through and set all the other real tier prices
$tierPriceInfo = $product->getData('tier_price');
if (!empty($tierPriceInfo)) {
echo "Before looping through Tier Price infor for " . $sku . " we are using (in bytes): ",
memory_get_usage() , "\n\n";
foreach ($tierPriceInfo as $tierPrice) {
if ($tierPrice["website_id"] == $dealerStoreId &&
$tierPrice["cust_group"] == $volumeDiscountGroupId &&
$tierPrice["price_qty"] == '1' &&
$tierPrice["price"] != $additionalTierInfo[0]['pri_current_price']) {
$updateTierPrice = true;
}
//todo need to do some refinement to the following, was rushed to put out the logic need to fix so it doesn't update everytime
// need to find if any of the tier prices do not match price as well if there is a price break in InOrder but not in Magento
if (!$updateTierPrice ) {
$updateRetail = isUpdateTierPrices($retailPriceBreaks, $tierPrice, $retailGroupId);
$updateWholesale = isUpdateTierPrices($wholesalePriceBreaks, $tierPrice, $wholesaleGroupId);
$updateVolWholesale = isUpdateTierPrices($volumeWholesalePriceBreaks, $tierPrice, $volumeDiscountGroupId);
if (
(count($retailPriceBreaks) > 0 && !$updateRetail['priceTierExists']) &&
(count($wholesalePriceBreaks) > 0 && !$updateWholesale['priceTierExists']) &&
(count($volumeWholesalePriceBreaks) > 0 && !$updateVolWholesale['priceTierExists'])) {
$updateTierPrice = true;
}
if(($updateRetail['updateTierPrice'] || $updateWholesale['updateTierPrice'] || $updateVolWholesale['updateTierPrice'])){
$updateTierPrice = true;
}
}
}
unset($tierPriceInfo);
echo "After looping through Tier Price infor for " . $sku . " we are using (in bytes): ",
memory_get_usage() , "\n\n";
}
else {
$updateTierPrice = true;
}
if ($updateTierPrice) {
echo "Before setting whether we update Tier Price for " . $sku . " we are using (in bytes): ",
memory_get_usage() , "\n\n";
//construct the tier price
$website_id = Mage::getModel('core/store')->load($dealerStoreId)->getWebsiteId();
$tierPrices = array(array(
'website_id' => $website_id,
'cust_group' => $volumeDiscountGroupId,
'price_qty' => '1',
'price' => $additionalTierInfo[0]['pri_current_price']
));
updateTierPrices($retailPriceBreaks, $retailGroupId, $tierPrices);
updateTierPrices($wholesalePriceBreaks, $wholesaleGroupId, $tierPrices);
updateTierPrices($volumeWholesalePriceBreaks, $volumeDiscountGroupId, $tierPrices);
$product->setData('tier_price', $tierPrices);
$updateProduct = true;
unset($website_id);
echo "After setting whether we update Tier Price for " . $sku . " we are using (in bytes): ",
memory_get_usage() , "\n\n";
}
if ($updateProduct) {
try{
echo "Before saving product for Tiered Pricing for " . $sku . " we are using (in bytes): ",
memory_get_usage() , "\n\n";
// $productUpdate->saveProduct($product, $ioProduct);
echo "After saving product for Tiered Pricing for " . $sku . " we are using (in bytes): ",
memory_get_usage() , "\n\n";
}catch (Exception $e){
echo $e->getMessage() . "\n\n";
continue;
}
}
}
}
$retailPriceBreaks = null;
$wholesalePriceBreaks = null;
$volumeWholesalePriceBreaks = null;
$oversizeCharge = null;
$additionalTierInfo = null;
$additionalInfo = null;
$product = null;
$productCount++;
echo $productCount . " Products have been proceessed \n\n";
}
echo "After running through all products we are using (in bytes): ",
memory_get_usage() , "\n\n";
echo "Peak memory usage for product update scrip (in bytes): ",
memory_get_peak_usage() , "\n\n";