我正在尝试为我们的PSA软件编写付款和Xero集成。由于这里的帮助，计费部分已经相当不错了。现在有趣的部分来自：将PSA的API中的发票数据解析为可以提供给Xero的可用数据......
以下是来自API的XML：
<invoice_batch_generic xmlns="http://tempuri.org/invoice_batch_generic.xsd">
<invoice_batch>
<batch_id>171</batch_id>
<create_date>2017-07-11T14:23:39.133-04:00</create_date>
<create_by_id>29682885</create_by_id>
<batch_data />
</invoice_batch>
<taxregioncategory>
<tax_category_name />
<total_tax_rate_per_category_and_region>0.0000000</total_tax_rate_per_category_and_region>
<total_tax_amount>0.00000</total_tax_amount>
</taxregioncategory>
<account>
<account_id>232</account_id>
<parent_name />
<creator_name>Dominic</creator_name>
<narrative_creator_name>Dominic</narrative_creator_name>
<territory_name />
<cust_id />
<cust_name>Metro </cust_name>
<taxable>No</taxable>
<addr1>123 Anywhere Ln</addr1>
<addr2 />
<city>Denver</city>
<account_region>CO</account_region>
<country>United States</country>
<postal_code>80203</postal_code>
<phone>1234567890</phone>
<fax />
<attention />
<billing_addr1>132 anywhere ln</billing_addr1>
<billing_addr2 />
<billing_city>Denver</billing_city>
<billing_region>CO</billing_region>
<billing_country>United States</billing_country>
<billing_postal_code>80203</billing_postal_code>
<billing_attention />
<tax_id />
<tax_group_name />
<parent_id />
<payment_term_name>NET 15</payment_term_name>
<account_invoice_email_recipient></account_invoice_email_recipient>
<invoice>
<invoice_id>471</invoice_id>
<account_id>232</account_id>
<owner_name>Dominic</owner_name>
<narrative_owner_name>Dominic</narrative_owner_name>
<invoice_date>2017-07-11T00:00:00-04:00</invoice_date>
<entry_time_stamp>2017-07-11T14:23:39-04:00</entry_time_stamp>
<invoice_number>2374</invoice_number>
<comments />
<invoice_total>1087.0800</invoice_total>
<total_tax_value>0.0000</total_tax_value>
<tax_description />
<tax_group />
<date_range_from>2017-08-01T00:00:00-04:00</date_range_from>
<date_range_to>2017-08-30T00:00:00-04:00</date_range_to>
<purchase_order_number />
<payment_term_name>NET 15</payment_term_name>
<batch_id>171</batch_id>
<invoice_transferred_flag>No</invoice_transferred_flag>
<payment_due_date>2017-07-26T00:00:00-04:00</payment_due_date>
<taxes />
<invoice_item>
<invoice_item_id>1</invoice_item_id>
<invoice_id>471</invoice_id>
<item_name>SOME STUFF</item_name>
<item_id>9234</item_id>
<item_date>2017-08-01T00:00:00-04:00</item_date>
<adjusted_item_id />
<type_of_transaction>Recurring Service</type_of_transaction>
<allocation_code_name>Managed Services</allocation_code_name>
<allocation_code_external_number />
<allocation_code_non_billable>No</allocation_code_non_billable>
<allocation_code_taxable>No</allocation_code_taxable>
<task_or_ticket_number />
<task_or_ticket_title>Recurring Service</task_or_ticket_title>
<ticket_contact />
<narrative_ticket_contact />
<adjustment_reason />
<resource_name> Dominic</resource_name>
<narrative_resource_name>Dominic </narrative_resource_name>
<resource_payroll_identifier />
<role_name />
<department>Operations</department>
<project_name />
<project_lead />
<narrative_project_lead />
<external_project_number />
<internal_project_number />
<gl_code_desc />
<gl_code_name />
<contract_name>Metro 2017</contract_name>
<external_contract_number />
<worked_hours>0.0000</worked_hours>
<non_billable_hours>0.0000</non_billable_hours>
<billable_hours>0.0000</billable_hours>
<hourly_billing_rate>21.4800</hourly_billing_rate>
<extended_price>859.2000</extended_price>
<time_entry_summary_notes />
<quantity>40.0000</quantity>
<expense_type />
<installed_product_name />
<subscription_name />
<subscription_desc />
<subscription_cost>0.00</subscription_cost>
<milestone_title />
<milestone_description />
<milestone_amount>0.0000</milestone_amount>
<service_or_bundle_id>63</service_or_bundle_id>
<service_name>STUFF</service_name>
<service_invoice_description>STUFF</service_invoice_description>
<service_units>40</service_units>
<service_unit_price>21.4800</service_unit_price>
<service_extended_price>859.2000</service_extended_price>
<service_period_start_date>2017-08-01T00:00:00-04:00</service_period_start_date>
<service_period_end_date>2017-08-31T00:00:00-04:00</service_period_end_date>
<setup_fee>0.0000</setup_fee>
<billing_approved_by>, Dominic</billing_approved_by>
<narrative_billing_approved_by>Dominic </narrative_billing_approved_by>
<approved_date>2017-07-11T11:03:25.957-04:00</approved_date>
<posted_date>2017-07-10T20:00:00-04:00</posted_date>
<non_overage_retainer_line_item_tax>0.0000</non_overage_retainer_line_item_tax>
<gross_amount>859.2000</gross_amount>
<contract_type>7</contract_type>
<department_number />
<effective_hourly_billing_rate>21.4800</effective_hourly_billing_rate>
<external_product_id />
<cost_description />
<project_phase />
<our_cost>310.0000</our_cost>
<expense_description />
<line_item_id>1</line_item_id>
<tax_region_and_category_id>0</tax_region_and_category_id>
<tax_region_name />
<tax_category_name />
<total_tax_rate_per_region_and_category>0.0000000</total_tax_rate_per_region_and_category>
<total_tax_amount>0.00000</total_tax_amount>
<allocation_code_id>29682901</allocation_code_id>
<serial_number />
<contract_period_type>m</contract_period_type>
<service_period_type>m</service_period_type>
<account_manager_when_posted>, Dominic</account_manager_when_posted>
</invoice_item>
<invoice_item>
<invoice_item_id>2</invoice_item_id>
<invoice_id>471</invoice_id>
<item_name>SEServer [Aug 01, 2017 - Aug 31, 2017]</item_name>
<item_id>9235</item_id>
<item_date>2017-08-01T00:00:00-04:00</item_date>
<adjusted_item_id />
<type_of_transaction>Recurring Service</type_of_transaction>
<allocation_code_name>Managed Services</allocation_code_name>
<allocation_code_external_number />
<allocation_code_non_billable>No</allocation_code_non_billable>
<allocation_code_taxable>No</allocation_code_taxable>
<task_or_ticket_number />
<task_or_ticket_title>Recurring Service</task_or_ticket_title>
<ticket_contact />
<narrative_ticket_contact />
<adjustment_reason />
<resource_name>, Dominic</resource_name>
<narrative_resource_name>Dominic </narrative_resource_name>
<resource_payroll_identifier />
<role_name />
<department>Operations</department>
<project_name />
<project_lead />
<narrative_project_lead />
<external_project_number />
<internal_project_number />
<gl_code_desc />
<gl_code_name />
<contract_name>Metro 2017</contract_name>
<external_contract_number />
<worked_hours>0.0000</worked_hours>
<non_billable_hours>0.0000</non_billable_hours>
<billable_hours>0.0000</billable_hours>
<hourly_billing_rate>110.4800</hourly_billing_rate>
<extended_price>220.9600</extended_price>
<time_entry_summary_notes />
<quantity>2.0000</quantity>
<expense_type />
<installed_product_name />
<subscription_name />
<subscription_desc />
<subscription_cost>0.00</subscription_cost>
<milestone_title />
<milestone_description />
<milestone_amount>0.0000</milestone_amount>
<service_or_bundle_id>62</service_or_bundle_id>
<service_name>SECURE MANAGED SERVICES: Server</service_name>
<service_invoice_description>Secure Managed Services Per Server</service_invoice_description>
<service_units>2</service_units>
<service_unit_price>110.4800</service_unit_price>
<service_extended_price>220.9600</service_extended_price>
<service_period_start_date>2017-08-01T00:00:00-04:00</service_period_start_date>
<service_period_end_date>2017-08-31T00:00:00-04:00</service_period_end_date>
<setup_fee>0.0000</setup_fee>
<billing_approved_by>, Dominic</billing_approved_by>
<narrative_billing_approved_by> Kirby</narrative_billing_approved_by>
<approved_date>2017-07-11T11:03:25.957-04:00</approved_date>
<posted_date>2017-07-10T20:00:00-04:00</posted_date>
<non_overage_retainer_line_item_tax>0.0000</non_overage_retainer_line_item_tax>
<gross_amount>220.9600</gross_amount>
<contract_type>7</contract_type>
<department_number />
<effective_hourly_billing_rate>110.4800</effective_hourly_billing_rate>
<external_product_id />
<cost_description />
<project_phase />
<our_cost>91.5000</our_cost>
<expense_description />
<line_item_id>2</line_item_id>
<tax_region_and_category_id>0</tax_region_and_category_id>
<tax_region_name />
<tax_category_name />
<total_tax_rate_per_region_and_category>0.0000000</total_tax_rate_per_region_and_category>
<total_tax_amount>0.00000</total_tax_amount>
<allocation_code_id>29682901</allocation_code_id>
<serial_number />
<contract_period_type>m</contract_period_type>
<service_period_type>m</service_period_type>
<account_manager_when_posted>, Dominic</account_manager_when_posted>
</invoice_item>
<invoice_item>
<invoice_item_id>3</invoice_item_id>
<invoice_id>471</invoice_id>
<item_name>SECURE MANAGED SERVICES: Firewall [Aug 01, 2017 - Aug 31, 2017]</item_name>
<item_id>9236</item_id>
<item_date>2017-08-01T00:00:00-04:00</item_date>
<adjusted_item_id />
<type_of_transaction>Recurring Service</type_of_transaction>
<allocation_code_name>Hardware as a Service</allocation_code_name>
<allocation_code_external_number>HWAAS</allocation_code_external_number>
<allocation_code_non_billable>No</allocation_code_non_billable>
<allocation_code_taxable>No</allocation_code_taxable>
<task_or_ticket_number />
<task_or_ticket_title>Recurring Service</task_or_ticket_title>
<ticket_contact />
<narrative_ticket_contact />
<adjustment_reason />
<resource_name>, Dominic</resource_name>
<narrative_resource_name>Dominic </narrative_resource_name>
<resource_payroll_identifier />
<role_name />
<department>Operations</department>
<project_name />
<project_lead />
<narrative_project_lead />
<external_project_number />
<internal_project_number />
<gl_code_desc />
<gl_code_name />
<contract_name>Metro 2017</contract_name>
<external_contract_number />
<worked_hours>0.0000</worked_hours>
<non_billable_hours>0.0000</non_billable_hours>
<billable_hours>0.0000</billable_hours>
<hourly_billing_rate>6.9200</hourly_billing_rate>
<extended_price>6.9200</extended_price>
<time_entry_summary_notes />
<quantity>1.0000</quantity>
<expense_type />
<installed_product_name />
<subscription_name />
<subscription_desc />
<subscription_cost>0.00</subscription_cost>
<milestone_title />
<milestone_description />
<milestone_amount>0.0000</milestone_amount>
<service_or_bundle_id>64</service_or_bundle_id>
<service_name>SECURE MANAGED SERVICES: Firewall TZ300</service_name>
<service_invoice_description>SonicWALL TZ300 Managed Firewall</service_invoice_description>
<service_units>1</service_units>
<service_unit_price>6.9200</service_unit_price>
<service_extended_price>6.9200</service_extended_price>
<service_period_start_date>2017-08-01T00:00:00-04:00</service_period_start_date>
<service_period_end_date>2017-08-31T00:00:00-04:00</service_period_end_date>
<setup_fee>0.0000</setup_fee>
<billing_approved_by>, Dominic</billing_approved_by>
<narrative_billing_approved_by>Dominic </narrative_billing_approved_by>
<approved_date>2017-07-11T11:03:25.957-04:00</approved_date>
<posted_date>2017-07-10T20:00:00-04:00</posted_date>
<non_overage_retainer_line_item_tax>0.0000</non_overage_retainer_line_item_tax>
<gross_amount>6.9200</gross_amount>
<contract_type>7</contract_type>
<department_number />
<effective_hourly_billing_rate>6.9200</effective_hourly_billing_rate>
<external_product_id />
<cost_description />
<project_phase />
<our_cost>46.0000</our_cost>
<expense_description />
<line_item_id>3</line_item_id>
<tax_region_and_category_id>0</tax_region_and_category_id>
<tax_region_name />
<tax_category_name />
<total_tax_rate_per_region_and_category>0.0000000</total_tax_rate_per_region_and_category>
<total_tax_amount>0.00000</total_tax_amount>
<allocation_code_id>29683499</allocation_code_id>
<serial_number />
<contract_period_type>m</contract_period_type>
<service_period_type>m</service_period_type>
<account_manager_when_posted>, Dominic</account_manager_when_posted>
</invoice_item>
</invoice>
</account>
</invoice_batch_generic>
基本上，我需要从这个XML中获取某些数据：
不幸的是，我的XML解析经验不存在。这个API提供其他所有内容，因为它很容易解析对象......我不是要求有人为我写这个，只是希望得到一个指向正确方向的指针。在这里，我试图解析一些项目：
//THIS IS WHERE WE PULL THE XML FROM OUR API
$xmlMarkup = $AT_Client->getInvoiceMarkup($_GET['Invoice'], 'XML');
$xmlMarkupResult = $xmlMarkup->GetInvoiceMarkupResult;
//THIS IS WHERE I WANT TO PARSE THINGS INTO VALUES THAT I CAN FEED INTO XERO
$dom = new DomDocument("1.0", "ISO-8859-1");
$dom->loadXml{$xmlMarkupResult};
$xpath = new DOMXPath($dom);
$itemList = array();
$itemNodes = $xpath->query('//account/invoice/invoice_item');
for($i=0;$i<$itemNodes->length;$i++) {
$itemList[] = $itemNodes->item($i)->nodeValue;
}
print_r($itemList);
非常感谢任何指导！
答案 0 :(得分：-1)
在DOM扩展中最强大的部分，它是与XPath的集成 - 事实上，DomXPath比SimpleXML等效功能强大得多。这个例子看起来相当复杂，但实际上它显示了DOM XPath功能的灵活性。
$dom = new DOMDocument("1.0", "UTF-8");
$dom->preserveWhiteSpace = false;
$dom->loadXml($xmlMarkupResult);
$xpath = new DOMXPath($dom);
$xpath->registerNamespace("ns", "http://tempuri.org/invoice_batch_generic.xsd");
$rootNode = $xpath->query('/ns:invoice_batch_generic')->item(0);
// Invoice data
$invoiceNumber = $xpath->query('ns:account/ns:invoice/ns:invoice_number', $rootNode)->item(0)->nodeValue;
$taxRate = $xpath->query('ns:taxregioncategory/ns:total_tax_rate_per_category_and_region', $rootNode)->item(0)->nodeValue;
$totalTaxAmount = $xpath->query('ns:taxregioncategory/ns:total_tax_amount', $rootNode)->item(0)->nodeValue;
// Invoice items
$itemList = array();
$invoiceItemNodes = $xpath->query('ns:account/ns:invoice/ns:invoice_item', $rootNode);
/* @var $invoiceItemNode DOMNode */
foreach ($invoiceItemNodes as $invoiceItemNode) {
$row = [];
/* @var $field DOMNode */
foreach ($invoiceItemNode->childNodes as $field) {
$row[$field->tagName] = $field->nodeValue;
}
$itemList[] = $row;
}
print_r($itemList);
答案 1 :(得分：-1)
使用SimpleXML可以更直接地访问数据，并且（IMHO）逻辑。由于这是一个相当简单的结构，你可以使用类似......
的东西$xml = simplexml_load_file("t1.xml");
foreach ($xml->account->invoice as $invoice) {
echo "Invoice id:".$invoice->invoice_id."\n";
foreach ( $invoice->invoice_item as $item ) {
echo "total_tax_rate_per_region_and_category:".
(string)$item->total_tax_rate_per_region_and_category."\n";
echo "total_tax_amount:".
(string)$item->total_tax_amount."\n";
}
}
如您所见，load_file只读取数据，然后您可以使用各种级别的数据，就像访问对象的元素一样。我希望这对你来说已经足够了。
我要指出的一件事是，当访问元素时，转换为(string)会返回元素的值，而仅使用元素名称就是对象。