(PECL mongo >= 0.8.0)
MongoId::__construct — Creates a new id
$id = NULL
  ] )Returns a new id.
| Version | Description | 
|---|---|
| 1.4.0 | An exception is thrown when passed invalid string | 
Example #1 MongoId::__construct() example
This example shows how to create a new id. This is seldom necessary, as the driver adds an id to arrays automatically before storing them in the database.
<?php
  $id1 = new MongoId();
  echo "$id1\n";
  $id2 = new MongoId();
  echo "$id2\n";
  ?>
The above example will output something similar to:
49a7011a05c677b9a916612a 49a702d5450046d3d515d10d
Example #2 Parameter example
This example shows how to use a string parameter to initialize a MongoId with a given value.
<?php
  $id1 = new MongoId();
  // create a new id from $id1
  $id2 = new MongoId("$id1");
  // show that $id1 and $id2 have the same hexidecimal value
  var_dump($id1 == $id2);
  ?>
The above example will output something similar to:
bool(true)