# MongoDB\BSON\Decimal128::__construct

(mongodb >=1.2.0)

MongoDB\BSON\Decimal128::__construct — Construct a new Decimal128

### Description

final public MongoDB\BSON\Decimal128::__construct ([ string `$value` ] )

> Note: MongoDB\BSON\Decimal128 is only compatible with MongoDB 3.4+. Attempting to use the BSON type with an earlier version of MongoDB will result in an error.

### Parameters

`value` (string)

  A decimal string.

### Errors/Exceptions

- Throws MongoDB\Driver\Exception\InvalidArgumentException on argument parsing errors.
- Throws MongoDB\Driver\Exception\InvalidArgumentException if `value` is not a valid decimal string.

### Examples

Example #1 MongoDB\BSON\Decimal128::__construct() example

`<?php
var_dump(new MongoDB\BSON\Decimal128(1234.5678));
var_dump(new MongoDB\BSON\Decimal128(NAN));
var_dump(new MongoDB\BSON\Decimal128(INF));
?>`

The above example will output something similar to:

    object(MongoDB\BSON\Decimal128)#1 (1) {
      ["dec"]=>
      string(9) "1234.5678"
    }
    object(MongoDB\BSON\Decimal128)#1 (1) {
      ["dec"]=>
      string(3) "NaN"
    }
    object(MongoDB\BSON\Decimal128)#1 (1) {
      ["dec"]=>
      string(8) "Infinity"
    }

### See Also

- » Decimal128 floating-point format
- » BSON Types