Construct a new ObjectId

- « MongoDB\BSON\ObjectId

- MongoDB\BSON\ObjectId::getTimestamp »

- PHP Manual
- MongoDB\BSON\ObjectId
- Construct a new ObjectId

# MongoDB\BSON\ObjectId::__construct

(mongodb >=1.0.0)

MongoDB\BSON\ObjectId::__construct — Construct a new ObjectId

### Description

final public MongoDB\BSON\ObjectId::__construct(?string `$id` = `null`)

### Parameters

`id` (string)

  A 24-character hexadecimal string. If not provided, the driver will generate an ObjectId.

### Errors/Exceptions

- Throws MongoDB\Driver\Exception\InvalidArgumentException on argument parsing errors.
- Throws MongoDB\Driver\Exception\InvalidArgumentException if `id` is not a 24-character hexadecimal string.

### Examples

Example #1 MongoDB\BSON\ObjectId::__construct() example

    <?phpvar_dump(new MongoDB\BSON\ObjectId());var_dump(new MongoDB\BSON\ObjectId('000000000000000000000001'));?>

The above example will output something similar to:

    object(MongoDB\BSON\ObjectId)#1 (1) {
      ["oid"]=>
      string(24) "56732d3dda14d81214634921"
    }
    object(MongoDB\BSON\ObjectId)#1 (1) {
      ["oid"]=>
      string(24) "000000000000000000000001"
    }

### See Also

- » ObjectId Reference
- » BSON Types: ObjectId