Datastore/src/DatastoreClient.php
public function deleteBatch(array $keys, array $options = [])
    {
        $options += [
            'baseVersion' => null
        ];

        $mutations = [];
        foreach ($keys as $key) {
            $mutations[] = $this->operation->mutation('delete', $key, Key::class, $options['baseVersion']);
        }

        return $this->operation->commit($mutations, $options);
    }
public function deleteBatch(array $keys, array $options = [])
    {
        $options += [
            'baseVersion' => null
        ];

        $mutations = [];
        foreach ($keys as $key) {
            $mutations[] = $this->operation->mutation('delete', $key, Key::class, $options['baseVersion']);
        }

        return $this->operation->commit($mutations, $options);
    }
public function deleteBatch ( array $ keys , array $ options = [ ] ) { $ options += [ 'baseVersion' => null ] ; $ mutations = [ ] ; foreach ( $ keys as $ key ) { $ mutations [ ] = $ this -> operation -> mutation ( 'delete' , $ key , Key :: class , $ options [ 'baseVersion' ] ) ; } return $ this -> operation -> commit ( $ mutations , $ options ) ; }
Delete multiple entities

Deletion by this method is non-transactional. If you need transaction
support, use {@see Google\Cloud\Datastore\Transaction::deleteBatch()}.

Example:
```
$keys = [
$datastore->key('Person', 'Bob'),
$datastore->key('Person', 'John')
];

$datastore->deleteBatch($keys);
```

@see https://cloud.google.com/datastore/docs/reference/rest/v1/projects/commit Commit API documentation

@param Key[] $keys The identifiers to delete.
@param array $options [optional] {
Configuration options

@type string $baseVersion Provides concurrency control. The version
of the entity that this mutation is being applied to. If this
does not match the current version on the server, the mutation
conflicts.
}
@return array [Response Body](https://cloud.google.com/datastore/reference/rest/v1/projects/commit#response-body)
Delete multiple entities