php - how to get xml tag by id

Question

I have XML in this format

<hotels>
    <hotel>
        <id>285</id>
        <name>Alexander</name>
        <price>250 USD</price>
    </hotel>

    <hotel>
        <id>678</id>
        <name>Hilton</name>
        <price>480 USD</price>
    </hotel>                
</hotels>

How do i get the name of hotel where id is 678 by using PHP?

Possible duplicate of [How do you parse and process HTML/XML in PHP?](https://stackoverflow.com/questions/3577641/how-do-you-parse-and-process-html-xml-in-php) — Domso, Dec 12 '18 at 08:58
@Domso - is the hotel tag was like this: `....` , would it was easier to get the NAME tag or do i still had to use FOREACH loop? — Roi, Dec 12 '18 at 10:23

Mohammad · Accepted Answer · 2018-12-12T10:18:26.503

1

Use simplexml_load_string() to parse xml string. Then loop through hotel tag and check content of id

$xml = simplexml_load_string($str);
foreach($xml->hotel as $hotel)
    $hotel->id == "678" ? @$name = (string)$hotel->name : '';
echo $name;

Check result in demo

Also you can use DOMXpath if you don't want to use foreach

$doc = new DOMDocument();
$doc->loadXML($str);
$name = (new DOMXpath($doc))->query("//hotel[id[text()='678']]/name")[0]->nodeValue;
// Hilton

Check result in demo

edited Dec 12 '18 at 10:18

answered Dec 12 '18 at 10:01

Mohammad

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Thank. Do i have to use FOREACH loop and run on all the sections? is there any function that find section according some value? – Roi Dec 12 '18 at 10:10
@Roi There is `DOMXpath` that i added to answer – Mohammad Dec 12 '18 at 10:22

score 0 · Answer 2 · answered Dec 12 '18 at 09:00

I hope this is what you're looking for :

$xmlstr = <<<XML
<hotels>
    <hotel>
        <id>285</id>
        <name>Alexander</name>
        <price>250 USD</price>
    </hotel>

    <hotel>
        <id>678</id>
        <name>Hilton</name>
        <price>480 USD</price>
    </hotel>                
</hotels>
XML;

$hotel = new SimpleXMLElement($xmlstr);
$list = $hotel->hotel;
$count = count($list);
while($count > 0){
    $count--;
    $id = $hotel->hotel[$count]->id;
    if($id == 678){
        $name = $hotel->hotel[$count]->name;
        echo $name;
    }
}

Thank. Do i have to use WHILE loop and run on all the sections? is there any function that find section according some value? — Roi, Dec 12 '18 at 10:10

score 0 · Answer 3 · answered Dec 12 '18 at 14:00

You can use SimpleXML and XPath to find the hotel without using loops..

$data ='<hotels>
    <hotel>
        <id>285</id>
        <name>Alexander</name>
        <price>250 USD</price>
    </hotel>

    <hotel>
        <id>678</id>
        <name>Hilton</name>
        <price>480 USD</price>
    </hotel>
</hotels>';

$hotel = new SimpleXMLElement($data);
$hotel678 = $hotel->xpath("//hotel[id='678']");
echo $hotel678[0]->name;

php - how to get xml tag by id

3 Answers3