update : 2015.11.03
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Creates a new id
MongoId
PHP Manual

MongoId::__construct

(PECL mongo >= 0.8.0)

MongoId::__construct — Creates a new id

설명

public MongoId::__construct ([ string|MongoId $id = NULL ] )

인수

id

A string (must be 24 hexadecimal characters) or a MongoId instance.

반환값

Returns a new id.

변경점

버전 설명
1.4.0 An exception is thrown when passed invalid string

예제

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";

  ?>

위 예제의 출력 예시:

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);
  ?>

위 예제의 출력 예시:

bool(true)

참고

MongoId
PHP Manual