Parse XML to PHP using ID value - php

Question

How can I echo xml values with php by calling their "columnId" and not the position in the array ? (The array is really long)
Here is a sample of the xml :
<Data>
<Value columnId="ITEMS_SOLD">68</Value>
<Value columnId="TOTAL_SALES">682</Value>
<Value columnId="SHIPPING_READY">29</Value>
...
</Data>
The following php gives me all of the values :
$url = 'XXX';
$xml = file_get_contents($url);
$feed = simplexml_load_string($xml) or die("Error: Cannot create object");
foreach($feed->Data->Value as $key => $value){
echo $value;
}
I would like to be able to use something like that in my document :
echo $feed->Data->Value['TOTAL_SALES'];
Thank you for your help.

Answer 1

echo $feed->Data->Value[1];

Answer 2

I have an another way for your solution. You can convert xml object into array and use this for further process. Try this code:
<?php
$url = 'XXX';
//Read xml data, If file exist...
if (file_exists($url)) {
//Load xml file...
$xml = simplexml_load_file($url);
$arrColumn = array();//Variable initialization...
$arrFromObj = (array) $xml;//Convert object to array...
$i = 0;//Variable initialization with value...
//Loop until data...
foreach($xml AS $arrKey => $arrData) {
$columnId = (string) $arrData['columnId'][0];//array object to string...
$arrColumn[$columnId] = $arrFromObj['Value'][$i];//assign data to array...
$i++;//Incremental variable...
}
} else {//Condition if file not exist and display message...
exit('Failed to open file');
}
?>
Above code will store result into array variable $arrColumn and result is:
Array
(
[ITEMS_SOLD] => 68
[TOTAL_SALES] => 682
[SHIPPING_READY] => 29
)
Hope this help you well!

Answer 3

Use XPath. SimpleXML and DOM support it, but SimpleXML has some limits (It can only fetch node lists).
SimpleXML
$feed = simplexml_load_string($xml);
var_dump(
(string)$feed->xpath('//Value[#columnId = "TOTAL_SALES"]')[0]
);
Output:
string(3) "682"
DOM
$document = new DOMDocument();
$document->loadXml($xml);
$xpath = new DOMXpath($document);
var_dump(
$xpath->evaluate('string(//Value[#columnId = "TOTAL_SALES"])')
);
Output:
string(3) "682"