how to reinitialize a Neo4j query?

Question

Could you please tell me which command line can help me to reinitialize a neo4j query, to explain more, I have a query which gives all users nodes and the second query gives folders nodes, unfortunately, the second query remember the result of the first query.

EDIT 0

Here follows a concatenation of additional information that OP posted as answers. To the one who is able, please merge the edits and remove this comment.

EDIT 1

            <td>
            <select name=user>
            <?php
            $result1 = $client->sendCypherQuery("MATCH (n:$label1) return n")->getResult();
            $i=0;
            foreach ($result1->getNodes() as $nu){

                $n[$i]=$nu->getproperty('lastname');
                $i++;
            }
                while ($j<$i)
                {
                echo "<option value='$n[$j]'> $n[$j] </option>";
                $j=$j+1;
                }
                echo "</select>";

            ?>
            </td>
        </tr>
        <tr>
            <td>Nom dossier :</td>
            <td>
            <select name=folder>
            <?php
            $result2 = $client->sendCypherQuery("MATCH (n:$label2) return n")->getResult();
            $i=0;
            foreach ($result2->getNodes() as $nd){

                $d[$i]=$nd->getProperty('name');
                $i++;
            }
            $j=0;
                while ($j<$i)
                {
                echo "<option value='$d[$j]'> $d[$j] </option>";
                $j=$j+1;
                }
                echo "</select>";
            ?>
            </td>
        </tr>

EDIT 2

I have 2 users and 2 folders. $result1 should return the users and $result2 should return the folders. when I look for the size of folders I get 4 and not 2 so the query remembers always the result of the first query.

EDIT 3

var_dump($result1), I get:

object(Neoxygen\NeoClient\Formatter\Result)  protected 'nodes' => 
array (size=2)
  7 => 
    object(Neoxygen\NeoClient\Formatter\Node)[796]
      protected 'id' => string '7' (length=1)
      protected 'labels' => 
        array (size=1)
          ...
      protected 'properties' => 
        array (size=6)
          ...
      protected 'inboundRelationships' => 
        array (size=0)
          ...
      protected 'outboundRelationships' => 
        array (size=0)
          ...
  9 => 
    object(Neoxygen\NeoClient\Formatter\Node)[797]
      protected 'id' => string '9' (length=1)
      protected 'labels' => 
        array (size=1)
          ...
      protected 'properties' => 
        array (size=6)
          ...
      protected 'inboundRelationships' => 
        array (size=0)
          ...
      protected 'outboundRelationships' => 
        array (size=0)
          ...   protected 'relationships' => 
array (size=0)
  empty   protected 'errors' => null 
  protected 'identifiers' => 
array (size=1)
  'n' => 
    array (size=2)
      0 => 
        object(Neoxygen\NeoClient\Formatter\Node)[796]
          ...
      1 => 
        object(Neoxygen\NeoClient\Formatter\Node)[797]
          ...

EDIT 4

and var_dump($result2):

object(Neoxygen\NeoClient\Formatter\Result)  protected 'nodes' => 
array (size=4)
  7 => 
    object(Neoxygen\NeoClient\Formatter\Node)[799]
      protected 'id' => string '7' (length=1)
      protected 'labels' => 
        array (size=1)
          ...
      protected 'properties' => 
        array (size=6)
          ...
      protected 'inboundRelationships' => 
        array (size=0)
          ...
      protected 'outboundRelationships' => 
        array (size=0)
          ...
  9 => 
    object(Neoxygen\NeoClient\Formatter\Node)[800]
      protected 'id' => string '9' (length=1)
      protected 'labels' => 
        array (size=1)
          ...
      protected 'properties' => 
        array (size=6)
          ...
      protected 'inboundRelationships' => 
        array (size=0)
          ...
      protected 'outboundRelationships' => 
        array (size=0)
          ...
  8 => 
    object(Neoxygen\NeoClient\Formatter\Node)[787]
      protected 'id' => string '8' (length=1)
      protected 'labels' => 
        array (size=1)
          ...
      protected 'properties' => 
        array (size=2)
          ...
      protected 'inboundRelationships' => 
        array (size=0)
          ...
      protected 'outboundRelationships' => 
        array (size=0)
          ...
  10 => 
    object(Neoxygen\NeoClient\Formatter\Node)[788]
      protected 'id' => string '10' (length=2)
      protected 'labels' => 
        array (size=1)
          ...
      protected 'properties' => 
        array (size=2)
          ...
      protected 'inboundRelationships' => 
        array (size=0)
          ...
      protected 'outboundRelationships' => 
        array (size=0)
          ...

EDIT 5

<?php    include 'connection.php'; 
$j=0;

$l=0;

$label1="user";

$label2="folder1";

?>
<br><br><br>    
<h3>Ajouter relation</h3>    
<form action='php/addlink.php' method=post>
    <table>
        <tr>
            <td>Nom utilisateur:</td>
            <td>
            <select name=user>
            <?php
            $result1 = $client->sendCypherQuery("MATCH (n:$label1) return n")->getResult();

            $i=0;
            foreach ($result1->getNodes() as $nu){

                $n[$i]=$nu->getproperty('lastname');
                $i++;
            }
                while ($j<$i)
                {
                echo "<option value='$n[$j]'> $n[$j] </option>";
                $j=$j+1;
                }
                echo "</select>";

            ?>
            </td>
        </tr>
        <tr>
            <td>Nom dossier :</td>
            <td>
            <select name=folder>
            <?php
            $result2 = $client->sendCypherQuery("MATCH (n:$label2) return n")->getResult();

            $i=0;
            foreach ($result2->getNodes() as $nd){

                $d[$i]=$nd->getid();
                $i++;
            }
            $j=0;
                while ($j<$i)
                {
                echo "<option value='$d[$j]'> $d[$j] </option>";
                $j=$j+1;
                }
                echo "</select>";
            ?>

Answer 1

This is really strange, I have created an integration test which proves that results are not duplicated in subsequent queries :

https://github.com/neoxygen/neo4j-neoclient/blob/master/tests/Neoxygen/NeoClient/Tests/Issues/IssueSOResultDuplicationTest.php

So I would look on different positions :

1. Make sure there are only 2 folder nodes
2. Check that all your variables are reinitialized
3. The labels provided in the query

NB: You can edit your original question instead of creating multiple replies.

I have test your code, just replacing the labels with those in my db, and I only get 2 folders :

So I would check the db content, can you try in your browser to make the second query manually.