Php/docs/class.mongobindata
(PECL mongo >= 0.8.1)
Warning This extension that defines this class is deprecated. Instead, the MongoDB extension should be used. Alternatives to this class include:
简介
An object that can be used to store or retrieve binary data from the database.
The maximum size of a single object that can be inserted into the database is 16MB. For data that is larger than this (movies, music, Henry Kissinger's autobiography), use MongoGridFS. For data that is smaller than 16MB, you may find it easier to embed it within the document using MongoBinData.
For example, to embed an image in a document, one could write:
<?php$profile = array( "username" => "foobity", "pic" => new MongoBinData(file_get_contents("gravatar.jpg"), MongoBinData::GENERIC),);$users->save($profile);?>
This class contains a type field, which currently gives
no additional functionality in the PHP driver or the database. There are
seven predefined types, which are defined as class constants below. For
backwards compatibility, the PHP driver uses
MongoBinData::BYTE_ARRAY as the default; however, this
may change to MongoBinData::GENERIC in the future.
Users are encouraged to specify a type in
MongoBinData::__construct().
类摘要
MongoBinData {
const
int
GENERIC
= 0
const
int
FUNC
= 1
const
int
BYTE_ARRAY
= 2
const
int
UUID
= 3
const
int
UUID_RFC4122
= 4
const
int
MD5
= 5
const
int
CUSTOM
= 128
/* Fields */
public
string
$bin
public
int
$type
= 2
/* 方法 */
public __construct
( string $data
[, int $type = 0
] )
public __toString ( ) : string
}
预定义常量
Binary Data Types
MongoBinData::GENERIC- Generic binary data.
MongoBinData::FUNC- Function.
MongoBinData::BYTE_ARRAY- Generic binary data (deprecated in favor of
MongoBinData::GENERIC). MongoBinData::UUID- Universally unique identifier (deprecated in favor of
MongoBinData::UUID_RFC4122). MongoBinData::UUID_RFC4122- Universally unique identifier (according to » RFC 4122).
MongoBinData::MD5- MD5.
MongoBinData::CUSTOM- User-defined type.
更新日志
| 版本 | 说明 |
|---|---|
| 1.5.0 | Added MongoBinData::GENERIC and
|
Table of Contents
- MongoBinData::__construct — 创建一个新的二进制数据对象
- MongoBinData::__toString — 二进制数据对象的字符串表达形式。
/* 常量 */