XML file/data handling with PHP - php

Question

I have a XML file as a master file (master.xml) and its content is blank.
<?xml version="1.0" encoding="UTF-8"?>
<master/>
I have a loop in which i get some data and turn them into xml files (item.xml) and their content is like
<?xml version="1.0" encoding="UTF-8"?>
<master>
<item>
<key1>value1</key1>
<key2>value2</key2>
<key3>value3</key3>
</item>
</master>
All i want, is to be able to get the Item from the item.xml and insert it on master.xml under the master tag so the final result would look something like
<?xml version="1.0" encoding="UTF-8"?>
<master>
<item>
<key1>value1</key1>
<key2>value2</key2>
<key3>value3</key3>
</item>
<item>
<key1>value1</key1>
<key2>value2</key2>
<key3>value3</key3>
</item>
<item>
<key1>value1</key1>
<key2>value2</key2>
<key3>value3</key3>
</item>
<item>
<key1>value1</key1>
<key2>value2</key2>
<key3>value3</key3>
</item>
</master>
I don't know if it helps but the code right now is like this.
$targetDom = new DOMDocument();
$targetDom->load('master.xml');
while($row = $sql->fetch(PDO::FETCH_ASSOC)) {
// Data beeing processed and stored as item.xml
$sourceDom = new DOMDocument();
$sourceDom->load('item.xml');
foreach ($sourceDom->documentElement->childNodes as $child) {
$targetDom->appendChild(
$targetDom->importNode($child, TRUE)
);
}
}
The code above has a result of this
<?xml version="1.0" encoding="UTF-8"?>
<master/>
<item>
<key1>value1</key1>
<key2>value2</key2>
<key3>value3</key3>
</item>
<item>
<key1>value1</key1>
<key2>value2</key2>
<key3>value3</key3>
</item>
<item>
<key1>value1</key1>
<key2>value2</key2>
<key3>value3</key3>
</item>
<item>
<key1>value1</key1>
<key2>value2</key2>
<key3>value3</key3>
</item>
What am i missing?

Answer 1

You need to append the items to the first element of the $targetDom
Use:
$targetDom->documentElement->appendChild(
$targetDom->importNode($child, TRUE)
);