1.以某字段开头的数据查询条件
$title = input('param.title');
$where['title'] = new \MongoDB\BSON\Regex("^{$title}",'i'); //已title开头的字
2.根据某字段模糊查询
1)命令行:db.news_live.find({"title":/测试?/i});
2)代码查询$query
=
array
(
"name"
=>
new
MongoRegex(
"/.*”.$name."
.*/i"));