所以我得到了这个XML。我在XML中得到了很多类似的块，我可以循环使用它。但我怎么知道有多少块呢？或者我该如何在最后一个街区后停下？
欢迎提出任何建议。
<StockBalanceOut xmlns="http://schemas.microsoft.com/dynamics/2008/01/documents/BON_StockBalanceOut" class="entity">
<_DocumentHash>f5a598f180ccdecffeb7774d58ca8743</_DocumentHash>
<AvailPhysicalAvailableQty>0</AvailPhysicalAvailableQty>
<AvailPhysicalReservedQty>0</AvailPhysicalReservedQty>
<AvailPhysicalReturnQty>0</AvailPhysicalReturnQty>
<AvailPhysicalReworkQty>0</AvailPhysicalReworkQty>
<AvailPhysicalScrapQty>0</AvailPhysicalScrapQty>
<Date>2014-09-26</Date>
<ItemId>15742-20907</ItemId>
<ItemShippingClass>Empty</ItemShippingClass>
<OnOrderQty>0</OnOrderQty>
<PhysicalInventAvailableQty>0</PhysicalInventAvailableQty>
<PhysicalInventReservedQty>0</PhysicalInventReservedQty>
<PhysicalInventReturnQty>0</PhysicalInventReturnQty>
<PhysicalInventReworkQty>0</PhysicalInventReworkQty>
<PhysicalInventScrapQty>0</PhysicalInventScrapQty>
<RecId>5637416600</RecId>
<RecVersion>1</RecVersion>
<Time>15:25:52</Time>
</StockBalanceOut>
<StockBalanceOut xmlns="http://schemas.microsoft.com/dynamics/2008/01/documents/BON_StockBalanceOut" class="entity">
<_DocumentHash>6c6a3aa160f3ab9388f8e1b5b2fd7dc1</_DocumentHash>
<AvailPhysicalAvailableQty>99</AvailPhysicalAvailableQty>
<AvailPhysicalReservedQty>0</AvailPhysicalReservedQty>
<AvailPhysicalReturnQty>0</AvailPhysicalReturnQty>
<AvailPhysicalReworkQty>0</AvailPhysicalReworkQty>
<AvailPhysicalScrapQty>0</AvailPhysicalScrapQty>
<Date>2014-09-26</Date>
<ItemId>21234-29752</ItemId>
<ItemShippingClass>Empty</ItemShippingClass>
<OnOrderQty>0</OnOrderQty>
<PhysicalInventAvailableQty>99</PhysicalInventAvailableQty>
<PhysicalInventReservedQty>0</PhysicalInventReservedQty>
<PhysicalInventReturnQty>0</PhysicalInventReturnQty>
<PhysicalInventReworkQty>0</PhysicalInventReworkQty>
<PhysicalInventScrapQty>0</PhysicalInventScrapQty>
<RecId>5637416601</RecId>
<RecVersion>1</RecVersion>
<Time>15:25:52</Time>
</StockBalanceOut>
从您的XML中，我得到了这些信息。<StockBalanceOut>有多个"块"，您可以通过以下方式访问每个块：-
$objectOfXMLFile->StockBalanceOut[0];
$objectOfXMLFile->StockBalanceOut[1];
要到达终点，你可以运行一个while循环。如果StockBalanceOut的任何索引（假设10不存在）都不存在，那么它将返回null。
$counter=0; //run from 0
while(!is_null($xmlOBJ->StockBalanceOut[$counter]))
{
//do anything here
$counter++;
}
我会考虑尝试这样的东西。为了节省您的链接之旅，这里有一些示例代码可以帮助您开始。
<?php
$xml = <<<EOF
<people>
<person name="Person 1">
<child/>
<child/>
<child/>
</person>
<person name="Person 2">
<child/>
<child/>
<child/>
<child/>
<child/>
</person>
</people>
EOF;
$elem = new SimpleXMLElement($xml);
foreach ($elem as $person) {
printf("%s has got %d children.'n", $person['name'], $person->count());
}
?>