EInfo

Provides a list of the names of all valid Entrez databases

Basic example

This object is very simple. Is only lists names of databases. The only real parameter here is the database. So this object doesn’t require a query object.

So all you need to do in this case is:

$eInfo = new EInfo();
$result = $eInfo->execute();

The database defaults to pubmed. The result will look something like this:

{
  "header": {
    "type": "einfo",
    "version": "0.3"
  },
  "einforesult": {
    "dbinfo": {
      "dbname": "pubmed",
      "menuname": "PubMed",
      "description": "PubMed bibliographic record",
      "dbbuild": "Build181016-2212m.1",
      "count": "28963682",
      "lastupdate": "2018/10/17 03:25",
      "fieldlist": [
        {
          "name": "ALL",
          "fullname": "All Fields",
          "description": "All terms from all searchable fields",
          "termcount": "206572927",
          "isdate": "N",
          "isnumerical": "N",
          "singletoken": "N",
          "hierarchy": "N",
          "ishidden": "N",
          "istruncatable": "Y",
          "israngable": "N"
        },
    ]
  }
}

EInfo parameters

EInfo has a few parameters.

• Database (defaults to pubmed)
• Version (defaults to ‘2.0’)
• Return type (defaults to json)

To change these simple use the object setters:

$eInfo = new EInfo();
$result = $eInfo->setDb('otherDatabase')
    ->setVersion('1.0')
    ->setReturnType('xml')
    ->execute();

And now the result will be changed accordingly.