StackOverflow2013

Note that there are some explanatory texts on larger screens.

plurals

POPHP SimpleXML DOM using between functions
primarykey
Id
2269053
data
AcceptedAnswerId
2269072
AnswerCount
2
ClosedDate
CommentCount
0
CommunityOwnedDate
CreationDate
2010-02-15T21:28:40.563
FavoriteCount
0
LastActivityDate
2010-02-15T21:40:48.710
LastEditDate
LastEditorUserId
0
OwnerUserId
271310
ParentId
0
PostTypeId
1
Score
1
ViewCount
457
LastEditorDisplayName
text
Body
I have been trying to get my head around how simplexml and dom updates XML between functions. The reason i ask is that the code i have written seems to work, but without me having to declare anything as global, and im a little confused as to why it does this. For example, i have this (simplified) code: <pre><code><? foreach ($filenames as $filename) { $xml = simplexml_load_file($filename); updateXml($xml); $xml->last_update = date('Y-m-d H:i:s'); $xml->asXML($filename); } function updateXml($xml) { //... if ($data = $xml->xpath('//data/info[product_id="' . $product_data['id'] . '"]')) { $parent = $data[0]->xpath("parent::*"); $data = updateItem($parent[0], $product_data); } else { $product = addItem($xml->products, $product_data['id']); $data = updateItem($product, $product_data); } } function updateItem($parent, $product_data) { $node = dom_import_simplexml($parent); $dom = $node->ownerDocument; $product = $dom->createElement('product'); $node->appendChild($product); $item = $dom->createElement('id', $product_data['id']); $product->appendChild($item); $item = $dom->createElement('name', $product_data['name']); $product->appendChild($item); $item = $dom->createElement('url'); $product->appendChild($item); $cdata = $dom->createCDATASection($product_data['url']); $item->appendChild($cdata); $item = $dom->createElement('price', $product_data['price']); $product->appendChild($item); return $node; } ?> </code></pre> Can you please help me understand how the XML is being updated between the functions without needing to declare it as global? I know it seems strange to ask about something that works, but i need to get my head around it :-) Thanks
Tags
<php><dom><function><simplexml>
Title
PHP SimpleXML DOM using between functions
singulars
PostAcceptedAnswerId
1. PO
 singulars
 PostTypePostTypeId
 PTAnswer
PostParentId
1. This table or related slice is empty.
PostTypePostTypeId
1. PTQuestion
UserLastEditorUserId
1. This table or related slice is empty.
UserOwnerUserId
1. USPeter John
plurals
PostLinksPostIdRelatedPostId
1. This table or related slice is empty.
PostLinksRelatedPostIdPostId
1. This table or related slice is empty.
PostsAcceptedAnswerId
1. This table or related slice is empty.
PostsParentIdCreationDate
1. PO
 singulars
 PostTypePostTypeId
 PTAnswer
2. PO
 singulars
 PostTypePostTypeId
 PTAnswer
VotesPostIdCreationDate
1. VO
 singulars
 PostPostId
 POPHP SimpleXML DOM using between functions
 UserUserId
 This table or related slice is empty.
 VoteTypeVoteTypeId
 VTUpMod
CommentsPostId
1. This table or related slice is empty.

Querying!

Guidance

A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.