PHP Create well formatted XML out of SQL result [duplicate] - php

Question

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How to generate XML file dynamically using PHP?
(8 answers)
Closed 3 years ago.
I have a problem. I am struggling for a few days now to create a well formatted XML.
I already created this code, but I have no idea if this is what I need:
$sql = "SELECT * FROM Contacts ORDER BY Id ASC";
$result = $conn->query($sql);
$arr_contacts = array();
while ($row = mysqli_fetch_assoc($result))
{
$contact_array = array(
$row["Id"]=>array(
'id'=>$row["Id"],
'name'=>$row["Name"])
);
$arr_contacts = array_merge($arr_contacts, $contact_array);
}
Now I want a XML like this:
<?xml version="1.0"?>
<Contacts>
<Contact>
<id>1</id>
<name>Smith</name>
</Contact>
<Contact>
<id>2</id>
<name>John</name>
</Contact>
<Contact>
<id>3</id>
<name>Viktor</name>
</Contact>
</Contacts>
The problem is that I don't understand XML very well, so my result is as following:
1Smith2John3Viktor
I used his code: https://www.codexworld.com/convert-array-to-xml-in-php/
How can I get the result I want?

Answer 1

You can use the following example which responds to your need :
$contact_array = array(
array(
'id'=>1,
'name'=>'Ali'),
array(
'id'=>2,
'name'=>'John'),
array(
'id'=>3,
'name'=>'Victor')
);
// Function that converts your array to Xml Object
function toXml(SimpleXMLElement $xml, array $data, $mainKey = null)
{
foreach ($data as $key => $value) {
// if the key is an integer, it needs text with it to actually work.
if (is_numeric($key)) {
$key = $mainKey ? : "key_$key";
}
if (is_array($value)) {
$childXml = $xml->addChild($key);
toXml($childXml, $value);
} else {
$xml->addChild($key, $value);
}
}
return $xml;
}
// Pretty print Xml
function formatXml($simpleXMLElement)
{
$xmlDocument = new DOMDocument('1.0');
$xmlDocument->preserveWhiteSpace = false;
$xmlDocument->formatOutput = true;
$xmlDocument->loadXML($simpleXMLElement->asXML());
return $xmlDocument->saveXML();
}
$xml = toXml(new SimpleXMLElement('<Contacts/>'), $contact_array, 'Contact');
// $output = $xml->asXML();
print formatXml($xml);
// Which prints the following
<?xml version="1.0"?>
<Contacts>
<Contact>
<id>1</id>
<name>Ali</name>
</Contact>
<Contact>
<id>2</id>
<name>Vincent</name>
</Contact>
<Contact>
<id>3</id>
<name>Victor</name>
</Contact>
</Contacts>
You can live test it here: http://sandbox.onlinephpfunctions.com/code/230507b1113504fc37427384e3609d0d0cb95f43
Note, You can ignore the Keys of your elements (so they remain numeric) so it become and use same functions as the example above :
$sql = "SELECT * FROM Contacts ORDER BY Id ASC";
$result = $conn->query($sql);
$arr_contacts = array();
while ($row = mysqli_fetch_assoc($result))
{
$contact_array = array(
array(
'id'=>$row["Id"],
'name'=>$row["Name"])
);
$arr_contacts = array_merge($arr_contacts, $contact_array);
}
Hope It helps !