Unable to delete unique document from Solr - php

Question

I am trying to delete a document from Solr using deleteByQuery.
The issue I am getting is that whenever I am trying to delete the document uniquely using only id, it is working fine.
However, when I am trying to delete based on more than one attribute, it is deleting all the documents where it finds even one attribute.
For eg,
if I have two documents say :
{
"id": "232",
"Author": "DEFG",
"Name": "Alphabet",
"Description": "Franz jagt im komplett verwahrlosten Taxi quer durch Bayern",
"_version_": 1513077984291979300
},
{
"id": "231",
"Author": "ABCD",
"Name": "Alphabet",
"Description": "Franz jagt im komplett verwahrlosten Taxi quer durch Bayern",
"_version_": 1513077999721775000
}
and I want to delete the document where id is 231 and Author is "ABCD", I wrote this query to delete that particular document.
$id=231;
$author= "ABCD";
$client->deleteByQuery("id:$id, Author:$author");
$client->commit();
It is deleting both the documents with id 231 and id 232 rather than deleting only one.
Can anyone please resolve this issue or give me any solution so that I can achieve this?
Thanks.

Answer 1

The delete query uses the same syntax as a search query. So you can easily test that query and tune it until it works. In your case, I suspect just doing id:$id AND Author:$author should work.