Delete nodes using a cypher query in neo4jphp

cypher_delete.php

<?php
error_reporting(-1);
ini_set('display_errors', 1);
spl_autoload_register(function ($sClass) {
	$sLibPath = __DIR__.'/../lib/';
	$sClassFile = str_replace('\\',DIRECTORY_SEPARATOR,$sClass).'.php';
	$sClassPath = $sLibPath.$sClassFile;
	if (file_exists($sClassPath)) {
		require($sClassPath);
	}
});

$client = new Everyman\Neo4j\Client();

$numNodes = 1000;
for ($i=0; $i<$numNodes; $i++) {
	$client->startBatch();
	$nodeA = $client->makeNode()->save();
	$nodeB = $client->makeNode()->setProperty('prop', 'xyz')->save();
	$rel = $nodeA->relateTo($nodeB, 'rel')->save();
	$client->commitBatch();
}

$queryTemplate = "START n = node(*) MATCH n-[r:rel]-b WHERE has(b.prop) AND not(b.prop in {phparr}) DELETE b, r";
$query = new Everyman\Neo4j\Cypher\Query($client, $queryTemplate, array(
	// 'nodeId' => $nodeA->getId(),
	'phparr' => array('zyx'),
));

$query->getResultSet();