# MongoDB\BSON\fromPHP

(mongodb >=1.0.0)

MongoDB\BSON\fromPHP — Returns the BSON representation of a PHP value

### 说明

MongoDB\BSON\fromPHP ( array|object `$value` ) : string

Serializes a PHP array or object (e.g. document) to its » BSON representation. The returned binary string will describe a BSON document.

### 参数

`value` (array|object)

  PHP value to be serialized.

### 返回值

The serialized BSON document as a binary string.

### 错误／异常

- Throws MongoDB\Driver\Exception\UnexpectedValueException if the PHP value cannot be converted to BSON. Possible reasons include, but are not limited to, encountering an unexpected MongoDB\BSON\Type instance or MongoDB\BSON\Serializable::bsonSerialize() failing to return an array or stdClass.

### 范例

Example #1 MongoDB\BSON\fromPHP() example

    <?php

    $bson = MongoDB\BSON\fromPHP(['foo' => 1]);
    echo bin2hex($bson), "\n";

    ?>

以上例程会输出：

    0e00000010666f6f000100000000cat

### 参见

- MongoDB\BSON\toPHP() - Returns the PHP representation of a BSON value
- » MongoDB BSON
- Persisting Data