How to check if SimpleXMLElement Object's attribute exist - PHP

Question

In the below code I'm trying to access @attributes of Userinfo as $somevariable->Userinfo->attributes(); which is perfectly fine, but when there is no @attributes it throws an error

Call to a member function attributes() on null

[Userinfo] => SimpleXMLElement Object
(
    [@attributes] => Array
        (
            [UserId] => 121
            [UserName] => Arun, Singh
            [UserEmail] => [email protected]
            [CreatedDate] => 06/27/2018 08:44:21
        )

)

So, before accessing @attributes, how to check if it exist ?

Thank you.

Can you show the XML(and not the array version) and the actual code your using. The error seems to indicate the Userinfo is not there rather than the attributes missing. — Nigel Ren
– Nigel Ren, Commented Oct 23, 2018 at 5:38
Yes @Nigel Ren this was the issue, actually Userinfo I'm getting from api dynamically, for some case it was not received I guess. — K Arun Singh
– K Arun Singh, Commented Oct 23, 2018 at 6:10

Death-is-the-real-truth · Accepted Answer · 2018-10-23 07:21:00Z

1

You can use !empty()

if(!empty($somevariable->Userinfo->attributes())){
  // do stuff here
}

Sample output:- https://3v4l.org/R32Bv

Or you can use isset() too

if(isset($somevariable->Userinfo)){
  // do stuff here
}

edited Oct 23, 2018 at 7:21

answered Oct 23, 2018 at 5:17

Death-is-the-real-truth

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2 Comments

K Arun Singh Over a year ago

In your code I made some changes and found that it is enough to to check if $somevariable->Userinfo exist, however your code also works :).. thanks

Death-is-the-real-truth Over a year ago

@KArunSingh glad to help you :):)

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