使用Codeigniter计算Neo4j中的行数

Question

I am using Neo4j and Codeigniter and I have to check if a certain node already exists before adding it to the DB.

Right now I am doing this:

// find the address
$cypher = "MATCH (adr) WHERE adr.ip_address = '".$address."' RETURN count(adr) as c";

$res = $this->neo->execute_query($cypher);

foreach ($res as $r)
{
    $count = $r['c'];
}       

if ($count > 0){
  // ... some action here
}

I feel there must be a better way of counting records in a resultset.

Answer 1

您可以使用CI执行此操作：

$res->num_rows();

Answer 2

Inspired by @anustart answer and the error message I started digging through the neo4j library and found this solution:

  echo $res->count();

which does exactly what I was looking for.