Oihana Php Arango

firstDocument.php

firstDocument() : string: Return the first alternative that is a document, and null if none of the alternatives is a document.

Return the first alternative that is a document, and null if none of the alternatives is a document.


    
                    firstDocument(mixed ...$alternative) : string

This helper wraps the ArangoDB AQL function FIRST_DOCUMENT().

Example AQL output:

FIRST_DOCUMENT(null, null, "foo", "bar") // "foo"

example

use function oihana\arango\db\functions\firstDocument;

$expr = firstDocument('null,doc,'hello');
// Produces: 'FIRST_DOCUMENT(null,doc,'hello')'

see

https://docs.arangodb.com/stable/aql/functions/miscellaneous/#first_document

since

1.0.0

author Marc Alcaraz

string —

The formatted AQL expression (e.g. 'FIRST_DOCUMENT(alternative,....)').