(mongodb >=1.0.0)
MongoDB\BSON\Regex::__construct — Construct a new Regex
$pattern
   , string $flags
   )
Example #1 MongoDB\BSON\Regex::__construct() example
<?php
$regex = new MongoDB\BSON\Regex('regex', 'i');
var_dump($regex);
?>
The above example will output:
object(MongoDB\BSON\Regex)#1 (2) {
  ["pattern"]=>
  string(5) "regex"
  ["flags"]=>
  string(1) "i"
}