Compare an xml element with a variable php

Question

I'm trying to compare an element in XML with a variable using simpleXML, but I can't get it right. This is what i have so far:

PHP

$xml = simplexml_load_file('0.xml');

    if((string)$xml->stickers->sticker->id == $id) {  //<-- THIS LINE
        //code to be executed
    }

XML

<stickers>
    <sticker>
        <id>1</id>
        <content>StickerContent</content>
    </sticker>
</stickers>

This leaves me with the Notice:Trying to get property of non-object on the line i marked and i don't know how to fix it.

var_dump($xml)

object(SimpleXMLElement)#1 (1) {
  ["sticker"]=>
  array(2) {
    [0]=>
    object(SimpleXMLElement)#2 (5) {
      ["id"]=>
      string(1) "1"
      ["content"]=>
      string(1) "p"
    }
  }
}

noetix · Accepted Answer · 2012-10-22 22:54:19Z

2

It should be like this:

if ((string) $xml->sticker->id == $id)

Though if you have multiple sticker elements it would be:

if ((string) $xml->sticker[0]->id == $id)

edited Oct 22, 2012 at 22:54

answered Oct 22, 2012 at 22:44

noetix

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5 Comments

Alexander Over a year ago

Thank you for your answer. I tried it, but i still get the same error.

noetix Over a year ago

Is $xml = simplexml_load_file('0.xml'); even getting any results? Update your post with the contents using var_dump($xml);.

prodigitalson Over a year ago

@alex since stickers is the root node wouldnt it be $xml->sticker[0]->id

noetix Over a year ago

Yeah just testing and thats the case.

Alexander Over a year ago

That works. Thank you! Sorry i didn't clarify that i had multiple sticker elements.

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