PHP删除Solr文档

<?php
$options = array
(
    'hostname' => 'localhost',
    'port'     => '8080',
    'path'=>'solr/help_category',
    'wt'=>'json'
);
$client = new SolrClient($options); 

$entryId=501000;  
$client->deleteById($entryId);
//$client->deleteByQuery('id:'.$entryId); 
$return=$client->commit();
var_dump($return);
?>