PHP的CSV到XML如何处理pipe道分隔的string

首先，我知道这是一个相当长的/详细的post，如果你正在寻找我的问题的要点，你可以跳到我有一个TLDR的底部。 在此先感谢所有评论者

我一直在为我的客户网站开发一个function。 他们在MAC上有一个旧版本的Microsoft Excel，不支持.XML – 他们使用.XML的商店系统

所以我需要编码将CSV转换为XML的能力，但是XML必须符合商店组件所需的结构。 我已经编写了一个XML的CSV函数，它的工作。

这是商店系统输出的XML（我已经删除了客户的客户的安全值）：

<orders> <order> <order_id>38</order_id> <order_number>000015</order_number> <order_status>Authorized</order_status> <order_date>0000-00-00 00:00:00</order_date> <customer_email>[e-mail]</customer_email> <order_amount>order total</order_amount> <base_order_amount>pre shipping order total</base_order_amount> <shipping_type>Basic Shipping</shipping_type> <shipping_price> $0.00</shipping_price> <billing_first_name>Name</billing_first_name> <billing_last_name>B</billing_last_name> <billing_address1>PO / Add</billing_address1> <billing_address2></billing_address2> <billing_city>Town</billing_city> <billing_state_province>province</billing_state_province> <billing_country>Canada</billing_country> <billing_postal_code>postal code</billing_postal_code> <billing_phone></billing_phone> <emt_quest>test</emt_quest> <emt_answ>test</emt_answ> <emt_answ_conf>test</emt_answ_conf> <shipping_first_name>Name</shipping_first_name> <shipping_last_name>B</shipping_last_name> <shipping_address1>PO / Add</shipping_address1> <shipping_address2></shipping_address2> <shipping_city>Town</shipping_city> <shipping_state_province>province</shipping_state_province> <shipping_country>Canada</shipping_country> <shipping_postal_code>postal code</shipping_postal_code> <shipping_phone></shipping_phone> <items> <item> <item_name>Sample Item</item_name> <item_price>$8.00</item_price> <item_quantity>12</item_quantity> </item> <item> <item_name>Sample Item 2</item_name> <item_price>$12.00</item_price> <item_quantity>12</item_quantity> </item> </items> </order> 

这是我的XML到CSV函数的代码

 <?php function xml2csv($xmlFile, $xPath) { $csvData = ""; // Load the XML file $xml = simplexml_load_file($xmlFile); // xpath to search $path = $xml->order; //get headers (xpath must match above) $headers = get_object_vars($xml->order[0]); // Loop through the first row to get headers foreach($headers as $key => $value){ $csvData .= $key . ','; } // Trim off the extra comma $csvData = trim($csvData, ','); // Add an LF $csvData .= "\n"; foreach($path as $item) { // Loop through the elements in specificed xpath foreach($item as $key => $value) { //check for a second generation children of specified first generation child if ($key == "items") { $itemString = ""; // if first generation child has children then loop through each second gen child foreach ($item->children() as $child) { // loop through each xpath of second generation child foreach($child as $value) { // for value of each xpath of second generation child get value as out foreach($value->children() as $out) { //combine each value into itemString for export to .csv $itemString .= $out . "|"; } } } // place item string in csvData string and remove extra pipe $csvData .= trim($itemString, "|"); } //else put xpath values of first geneartion child in .csv else { $csvData .= trim($value) . ','; } } // Trim off the extra comma $csvData = trim($csvData, ','); // Add an LF $csvData .= "\n"; } // Return the CSV data return $csvData; } 

当从商店系统调用一个给定的.XML文件时，它会输出下面的.CSV文件（我使用虚拟值'item price'不是偶然的）

 order_id,order_number,order_status,order_date,customer_email,order_amount,base_order_amount,shipping_type,shipping_price,billing_first_name,billing_last_name,billing_address1,billing_address2,billing_city,billing_state_province,billing_country,billing_postal_code,billing_phone,emt_quest,emt_answ,emt_answ_conf,medicinal_use,shipping_first_name,shipping_last_name,shipping_address1,shipping_address2,shipping_city,shipping_state_province,shipping_country,shipping_postal_code,shipping_phone,items 00,000000,Authorized,0000-00-00 00:00:00,[e-mail],$00.00,$00.00,Basic Shipping,$0.00,Me,Initial,123 Some Person Street,,Personville,Prov/State,Country,postal,,test,test,test,test,test,test,test,,test,test,test,test,,item name|item price|item quantity 01,000000,Authorized,0000-00-00 00:00:00,[e-mail],$00.00,$00.00,Basic Shipping,$0.00,Me,Initial,123 Some Person Street,,Personville,Prov/State,Country,postal,,test,test,test,test,test,test,test,,test,test,test,test,,item name|item price|item quantity 02,000000,Authorized,0000-00-00 00:00:00,[e-mail],$00.00,$00.00,Basic Shipping,$0.00,Me,Initial,123 Some Person Street,,Personville,Prov/State,Country,postal,,test,test,test,test,test,test,test,,test,test,test,test,,item name|item price|item quantity 03,000000,Authorized,0000-00-00 00:00:00,[e-mail],$00.00,$00.00,Basic Shipping,$0.00,Me,Initial,123 Some Person Street,,Personville,Prov/State,Country,postal,,test,test,test,test,test,test,test,,test,test,test,test,,item name|item price|item quantity 04,000000,Authorized,0000-00-00 00:00:00,[e-mail],$00.00,$00.00,Basic Shipping,$0.00,Me,Initial,123 Some Person Street,,Personville,Prov/State,Country,postal,,test,test,test,test,test,test,test,,test,test,test,test,,item name|item price|item quantity|item name|item price|item quantity 

这里的目的是我的客户可以直接从商店系统（而不是默认的.XML）下载一个.CSV – 在他们需要处理他们的订单时，在Excel中处理它，然后将这个.CSV上传到商店 – 它会自动转换为XML，就像我上面所显示的那样。

由于.CSV是一个平面格式，我所做的是将项目XML压缩成一个简单的.CSVstring，其中每个值由| 这将不会在我们的网站上的任何标记文本中使用。 作为这样的item name|item price|item quantity

这是我的代码，试图实现这一点，我接近，但我有一些与输出奈特的行为。 它在引用的行上抛出一个未定义的错误错误$itemvalue = $doc->createTextNode($irow[$g]); （就好像循环运行的次数太多），也不会产生预期的输出。

 function contains($substring, $string) { $pos = strpos($string, $substring); if($pos === false) { // string needle NOT found in haystack return false; } else { // string needle found in haystack return true; } } function csv2xml($csvData) { $outputFilename = 'test.xml'; // Open csv to read $input = fopen($csvData, 'rt'); // Get the headers of the file $headers = fgetcsv($input); // Create a new dom document with pretty formatting $doc = new DomDocument(); $doc->formatOutput = true; // Add a root node to the document $root = $doc->createElement('orders'); $root = $doc->appendChild($root); while (($row = fgetcsv($input)) !== FALSE) { $container = $doc->createElement('order'); foreach ($headers as $i => $header) { //set temp file name here $tempFile = "temp.csv"; //prepare mockCSV $mockCSV = ""; $mockCSV .= "item_name,item_price,item_quantity"; $mockCSV .= "\n"; //check if current property has items data with | if (contains("|", $row[$i])) { //if it does create array of data $item_arr = explode("|", $row[$i]); //create header for 'items' node $child = $doc->createElement($header); $child = $container->appendChild($child); //count for items $count = 0; foreach($item_arr as $k => $item) { $mockCSV .= trim($item) . ","; if($count == 2) { // Trim off the extra comma $mockCSV = trim($mockCSV, ','); // Add an LF $mockCSV .= "\n"; } $count++; } // Trim off the extra comma $mockCSV = trim($mockCSV, ','); // Add an LF $mockCSV .= "\n"; //put mock CSV data in temp file $f = fopen($tempFile, "w"); fwrite($f, $mockCSV); fclose($f); //get data from temp file $iteminput = fopen($tempFile, 'rt'); //get headers from temp file $itemheaders = fgetcsv($iteminput); while (($irow = fgetcsv($iteminput)) !== FALSE) { $itemchild = $doc->createElement('item'); foreach($itemheaders as $g => $itemheader) { $subchild = $doc->createElement($itemheader); $subchild = $itemchild->appendChild($subchild); $itemvalue = $doc->createTextNode($irow[$g]); /* OFFSET HAPPENS HERE */ $itemvalue = $subchild->appendChild($itemvalue); } } $itemchild = $child->appendChild($itemchild); } else { $child = $doc->createElement($header); $child = $container->appendChild($child); $value = $doc->createTextNode($row[$i]); $value = $child->appendChild($value); } } $root->appendChild($container); } $strxml = $doc->saveXML(); $handle = fopen($outputFilename, "w"); fwrite($handle, $strxml); fclose($handle); } echo csv2xml("test.csv"); ?> 

预期的输出结果应该与我在上面发布的XML结构相同，但是它是这样做的：

 <orders> <order> <order_id>38</order_id> <order_number>000015</order_number> <order_status>Authorized</order_status> <order_date>0000-00-00 00:00:00</order_date> <customer_email>[e-mail]</customer_email> <order_amount>$96.00</order_amount> <base_order_amount>$96.00</base_order_amount> <shipping_type>Basic Shipping</shipping_type> <shipping_price> $0.00</shipping_price> <billing_first_name>Name</billing_first_name> <billing_last_name>B</billing_last_name> <billing_address1>PO / Add</billing_address1> <billing_address2></billing_address2> <billing_city>Town</billing_city> <billing_state_province>province</billing_state_province> <billing_country>Canada</billing_country> <billing_postal_code>postal code</billing_postal_code> <billing_phone></billing_phone> <emt_quest>test</emt_quest> <emt_answ>test</emt_answ> <emt_answ_conf>test</emt_answ_conf> <shipping_first_name>Name</shipping_first_name> <shipping_last_name>B</shipping_last_name> <shipping_address1>PO / Add</shipping_address1> <shipping_address2></shipping_address2> <shipping_city>Town</shipping_city> <shipping_state_province>province</shipping_state_province> <shipping_country>Canada</shipping_country> <shipping_postal_code>postal code</shipping_postal_code> <shipping_phone></shipping_phone> <items> <item> <item_name></item_name> <item_price></item_price> <item_quantity></item_quantity> </item> </items> </order> 

而不是把一些领域的价值。 也没有重复的双重产品条目，如图所示源.CSV字段看起来像这个item name|item price|item quantity|item name|item price|item quantity

这是我的问题，我似乎无法正确处理pipe道分隔字段它不会按预期的方式输出。 在代码的早期版本中，我获得了所有的数据，但没有创build单独的“项目”节点。

任何帮助都是非常值得赞赏的，在这一点上，我觉得它很简单，我只是需要另一双眼睛在这个问题上。

更重要的是，我在这里使用的是非常不完整的代码，我觉得我用.PHP练习是没有用的 – 我觉得在这个问题上肯定会出现某种逻辑问题 – 我的方式可以工作，但是必须有一个更简化的方法。 如果有人能告诉我这是什么 – 这是我真正想要的答案。

TL：灾难恢复从这里开始我正试图将.CSV数据转换为结构化的.XML数据，使用pipe道分隔符为第二代和第三代XML子代

只有一个字段在我的源.CSV文件'项目'包含这样的信息 – 其他所有项目是单键单项条目数据看起来像这个item name|item price|item quantity|item name|item price|item quantity

所以我做的是检查| 里面的.CSVstring，当前正在运行循环，如果它被检测到，我用explode()来创build一个数组。

我已经尝试重新创build一个模拟的CSV文件，并把它放在一个临时目录中，将这些信息放入，然后使用基本的CSV到XML，它在我的程序中工作，将该数据放入XML Dom文档

预期产出：

 <items> <item> <item_name>Sample Item</item_name> <item_price>$8.00</item_price> <item_quantity>12</item_quantity> </item> <item> <item_name>Sample Item 2</item_name> <item_price>$8.00</item_price> <item_quantity>12</item_quantity> </item> </items> 

输出我得到：

 <items> <item> <item_name></item_name> <item_price></item_price> <item_quantity></item_quantity> </item> </items> 

我需要得到很多信息来正确说明问题，但是我的问题很简单 – 我如何实现我想要的输出。

Answer 1

让我备份并首先提供CSV到XML的例程，然后照pipepipe道元素。

一些评论：

• 我比DOM更喜欢SimpleXML ，因为它易于使用，所以我将在示例中使用它。 当然，也可以用DOM完成。
• 我将使用str_getcsv()而不是fgetcsv()来在线创build一个工作示例。

基本的CSV到XML

 // XML: set up object $xml = simplexml_load_string("<orders/>"); // CSV: assume CSV in $c, get it as a whole $csv = str_getcsv($c, "\n"); // CSV: separate 1st row with field names from the following rows $names = str_getcsv(array_shift($csv)); // CSV: parse row by row foreach ($csv as $row) { // CSV: combine names as keys => data as values $row = array_combine($names, str_getcsv($row)); // XML: create new <order> $xml_order = $xml->addChild("order"); // CSV: parse a single row foreach ($row as $key => $value) { // ***** // XML: create field as child of <order> $xml_order->addChild($key, $value); // ***** } } 

处理pipe道元素

下面的代码replace上面的// *****之间的行

 // CSV: check for pipes, attention use strict comparison === if (strpos($value, "|") === false) { // XML: no pipe, create node as a child of <order> $xml_order->addChild($key, $value); } else { // CSV: pipe present, split up data $csv_items = str_getcsv($value,"|"); // XML: create <items> node $xml_items = $xml_order->addChild($key); // CSV: iterate over $csv_items, each 3 elements = 1 row // chop row after row while (!empty($csv_items)) { // XML: create <item> node as child of <items> $xml_item = $xml_items->addChild("item"); // XML: create children of <item> node $xml_item->addChild("item_name", array_shift($csv_items)); $xml_item->addChild("item_price", array_shift($csv_items)); $xml_item->addChild("item_quantity", array_shift($csv_items)); } } 

结合代码没有评论

 $xml = simplexml_load_string("<orders/>"); $csv = str_getcsv($c, "\n"); // assume CSV in $c $names = str_getcsv(array_shift($csv)); foreach ($csv as $row) { $row = array_combine($names, str_getcsv($row)); $xml_order = $xml->addChild("order"); foreach ($row as $key => $value) { if (strpos($value, "|") === false) $xml_order->addChild($key, $value); else { $csv_items = str_getcsv($value,"|"); $xml_items = $xml_order->addChild($key); while (!empty($csv_items)) { $xml_item = $xml_items->addChild("item"); $xml_item->addChild("item_name", array_shift($csv_items)); $xml_item->addChild("item_price", array_shift($csv_items)); $xml_item->addChild("item_quantity", array_shift($csv_items)); } } } } 

看到它的工作： https ： //eval.in/368945