# PSR-7 Message Implementation
This repository contains a full [PSR-7](http://www.php-fig.org/psr/psr-7/)
message implementation, several stream decorators, and some helpful
functionality like query string parsing.
![CI](https://github.com/guzzle/psr7/workflows/CI/badge.svg)
![Static analysis](https://github.com/guzzle/psr7/workflows/Static%20analysis/badge.svg)
# Stream implementation
This package comes with a number of stream implementations and stream
decorators.
## AppendStream
`GuzzleHttp\Psr7\AppendStream`
Reads from multiple streams, one after the other.
```php
use GuzzleHttp\Psr7;
$a = Psr7\Utils::streamFor('abc, ');
$b = Psr7\Utils::streamFor('123.');
$composed = new Psr7\AppendStream([$a, $b]);
$composed->addStream(Psr7\Utils::streamFor(' Above all listen to me'));
echo $composed; // abc, 123. Above all listen to me.
```
## BufferStream
`GuzzleHttp\Psr7\BufferStream`
Provides a buffer stream that can be written to fill a buffer, and read
from to remove bytes from the buffer.
This stream returns a "hwm" metadata value that tells upstream consumers
what the configured high water mark of the stream is, or the maximum
preferred size of the buffer.
```php
use GuzzleHttp\Psr7;
// When more than 1024 bytes are in the buffer, it will begin returning
// false to writes. This is an indication that writers should slow down.
$buffer = new Psr7\BufferStream(1024);
```
## CachingStream
The CachingStream is used to allow seeking over previously read bytes on
non-seekable streams. This can be useful when transferring a non-seekable
entity body fails due to needing to rewind the stream (for example, resulting
from a redirect). Data that is read from the remote stream will be buffered in
a PHP temp stream so that previously read bytes are cached first in memory,
then on disk.
```php
use GuzzleHttp\Psr7;
$original = Psr7\Utils::streamFor(fopen('http://www.google.com', 'r'));
$stream = new Psr7\CachingStream($original);
$stream->read(1024);
echo $stream->tell();
// 1024
$stream->seek(0);
echo $stream->tell();
// 0
```
## DroppingStream
`GuzzleHttp\Psr7\DroppingStream`
Stream decorator that begins dropping data once the size of the underlying
stream becomes too full.
```php
use GuzzleHttp\Psr7;
// Create an empty stream
$stream = Psr7\Utils::streamFor();
// Start dropping data when the stream has more than 10 bytes
$dropping = new Psr7\DroppingStream($stream, 10);
$dropping->write('01234567890123456789');
echo $stream; // 0123456789
```
## FnStream
`GuzzleHttp\Psr7\FnStream`
Compose stream implementations based on a hash of functions.
Allows for easy testing and extension of a provided stream without needing
to create a concrete class for a simple extension point.
```php
use GuzzleHttp\Psr7;
$stream = Psr7\Utils::streamFor('hi');
$fnStream = Psr7\FnStream::decorate($stream, [
'rewind' => function () use ($stream) {
echo 'About to rewind - ';
$stream->rewind();
echo 'rewound!';
}
]);
$fnStream->rewind();
// Outputs: About to rewind - rewound!
```
## InflateStream
`GuzzleHttp\Psr7\InflateStream`
Uses PHP's zlib.inflate filter to inflate zlib (HTTP deflate, RFC1950) or gzipped (RFC1952) content.
This stream decorator converts the provided stream to a PHP stream resource,
then appends the zlib.inflate filter. The stream is then converted back
to a Guzzle stream resource to be used as a Guzzle stream.
## LazyOpenStream
`GuzzleHttp\Psr7\LazyOpenStream`
Lazily reads or writes to a file that is opened only after an IO operation
take place on the stream.
```php
use GuzzleHttp\Psr7;
$stream = new Psr7\LazyOpenStream('/path/to/file', 'r');
// The file has not yet been opened...
echo $stream->read(10);
// The file is opened and read from only when needed.
```
## LimitStream
`GuzzleHttp\Psr7\LimitStream`
LimitStream can be used to read a subset or slice of an existing stream object.
This can be useful for breaking a large file into smaller pieces to be sent in
chunks (e.g. Amazon S3's multipart upload API).
```php
use GuzzleHttp\Psr7;
$original = Psr7\Utils::streamFor(fopen('/tmp/test.txt', 'r+'));
echo $original->getSize();
// >>> 1048576
// Limit the size of the body to 1024 bytes and start reading from byte 2048
$stream = new Psr7\LimitStream($original, 1024, 2048);
echo $stream->getSize();
// >>> 1024
echo $stream->tell();
// >>> 0
```
## MultipartStream
`GuzzleHttp\Psr7\MultipartStream`
Stream that when read returns bytes for a streaming multipart or
multipart/form-data stream.
## NoSeekStream
`GuzzleHttp\Psr7\NoSeekStream`
NoSeekStream wraps a stream and does not allow seeking.
```php
use GuzzleHttp\Psr7;
$original = Psr7\Utils::streamFor('foo');
$noSeek = new Psr7\NoSeekStream($original);
echo $noSeek->read(3);
// foo
var_export($noSeek->isSeekable());
// false
$noSeek->seek(0);
var_export($noSeek->read(3));
// NULL
```
## PumpStream
`GuzzleHttp\Psr7\PumpStream`
Provides a read only stream that pumps data from a PHP callable.
When invoking the provided callable, the PumpStream will pass the amount of
data requested to read to the callable. The callable can choose to ignore
this value and return fewer or more bytes than requested. Any extra data
returned by the provided callable is buffered internally until drained using
the read() function of the PumpStream. The provided callable MUST return
false when there is no more data to read.
## Implementing stream decorators
Creating a stream decorator is very easy thanks to the
`GuzzleHttp\Psr7\StreamDecoratorTrait`. This trait provides methods that
implement `Psr\Http\Message\StreamInterface` by proxying to an underlying
stream. Just `use` the `StreamDecoratorTrait` and implement your custom
methods.
For example, let's say we wanted to call a specific function each time the last
byte is read from a stream. This could be implemented by overriding the
`read()` method.
```php
use Psr\Http\Message\StreamInterface;
use GuzzleHttp\Psr7\StreamDecoratorTrait;
class EofCallbackStream implements StreamInterface
{
use StreamDecoratorTrait;
private $callback;
public function __construct(StreamInterface $stream, callable $cb)
{
$this->stream = $stream;
$this->callback = $cb;
}
public function read($length)
{
$result = $this->stream->read($length);
// Invoke the callback when EOF is hit.
if ($this->eof()) {
call_user_func($this->callback);
}
return $result;
}
}
```
This decorator could be added to any existing stream and used like so:
```php
use GuzzleHttp\Psr7;
$original = Psr7\Utils::streamFor('foo');
$eofStream = new EofCallbackStream($original, function () {
echo 'EOF!';
});
$eofStream->read(2);
$eofStream->read(1);
// echoes "EOF!"
$eofStream->seek(0);
$eofStream->read(3);
// echoes "EOF!"
```
## PHP StreamWrapper
You can use the `GuzzleHttp\Psr7\StreamWrapper` class if you need to use a
PSR-7 stream as a PHP stream resource.
Use the `GuzzleHttp\Psr7\StreamWrapper::getResource()` method to create a PHP
stream from a PSR-7 stream.
```php
use GuzzleHttp\Psr7\StreamWrapper;
$stream = GuzzleHttp\Psr7\Utils::streamFor('hello!');
$resource = StreamWrapper::getResource($stream);
echo fread($resource, 6); // outputs hello!
```
# Static API
There are various static methods available under the `GuzzleHttp\Psr7` namespace.
## `GuzzleHttp\Psr7\Message::toString`
`public static function toString(MessageInterface $message): string`
Returns the string representation of an HTTP message.
```php
$request = new GuzzleHttp\Psr7\Request('GET', 'http://example.com');
echo GuzzleHttp\Psr7\Message::toString($request);
```
## `GuzzleHttp\Psr7\Message::bodySummary`
`public static function bodySummary(MessageInterface $message, int $truncateAt = 120): string|null`
Get a short summary of the message body.
Will return `null` if the response is not printable.
## `GuzzleHttp\Psr7\Message::rewindBody`
`public stati
没有合适的资源?快使用搜索试试~ 我知道了~
网盘赚钱系统网站源码下载
共5876个文件
php:1896个
png:1202个
dat:720个
1.该资源内容由用户上传,如若侵权请联系客服进行举报
2.虚拟产品一经售出概不退款(资源遇到问题,请及时私信上传者)
2.虚拟产品一经售出概不退款(资源遇到问题,请及时私信上传者)
版权申诉
5星 · 超过95%的资源 1 下载量 39 浏览量
2022-03-28
13:14:34
上传
评论
收藏 29.28MB ZIP 举报
温馨提示
源码介绍:网站赚钱系统源码,支持多个服务器部署,支持阿里云、腾讯云oss 。 功能特点:大文件分片上传、下载限速、用户组管理、存储策略管理、文件回收站、默认对接易支付接口、用户提现管理、文件举报管理、找回密码邮件发送、用户文件收益走势图、新增 vip 专属标志、个人中心、分享页、标签、VIP功能等。
资源推荐
资源详情
资源评论
收起资源包目录
网盘赚钱系统网站源码下载 (5876个子文件)
._11 172B
._12 172B
._17 172B
._202109 172B
._20210927 172B
._20210929 172B
._20210930 172B
._20210930 172B
._202110 172B
._20211010 172B
._3b 172B
._4 172B
._66 172B
._78 172B
._8 172B
._85 172B
._admin 172B
._admin 172B
._admin_simpleboot3 172B
._advlist 172B
._aferrandini 172B
._aliyuncs 172B
._alphabetic 172B
._anchor 172B
._animate 172B
._animate 172B
._app 172B
._application 172B
._arrow 172B
._artDialog 172B
._assets 172B
._assets 172B
._assets 172B
._assets 172B
._auth 172B
._autolink 172B
._autoresize 172B
._autosave 172B
._avatar 172B
._avatar 172B
._b8 172B
._bb 172B
._bbcode 172B
._behavior 172B
._bgs 172B
._bin 172B
._brackets 172B
._builder 172B
._button 172B
._c5 172B
._cache 172B
._cache 172B
._cache 172B
._cal 172B
._cc 172B
._ce 172B
._certify 172B
._char 172B
._charmap 172B
._code 172B
._code 172B
._codesample 172B
._colorpicker 172B
._command 172B
._command 172B
._COMMITMENT 172B
._common 172B
._component 172B
._composer 172B
._concern 172B
._config 172B
._config 172B
._connector 172B
._console 172B
._content 172B
._contextmenu 172B
._controller 172B
._controller 172B
._controller 172B
._controller 172B
._Cookie 172B
._Core 172B
._Cos 172B
._cos-sdk-v5 172B
._css 172B
._css 172B
._css 172B
._css 172B
._css 172B
._css 172B
._css 172B
._css 172B
._css 172B
._css 172B
._css 172B
._css 172B
._custom 172B
._dark 172B
._dashboard 172B
._data 172B
共 5876 条
- 1
- 2
- 3
- 4
- 5
- 6
- 59
资源评论
- 大喵20142023-07-10感谢资源主分享的资源解决了我当下的问题,非常有用的资源。
网罗天下888
- 粉丝: 7
- 资源: 74
下载权益
C知道特权
VIP文章
课程特权
开通VIP
上传资源 快速赚钱
- 我的内容管理 展开
- 我的资源 快来上传第一个资源
- 我的收益 登录查看自己的收益
- 我的积分 登录查看自己的积分
- 我的C币 登录后查看C币余额
- 我的收藏
- 我的下载
- 下载帮助
安全验证
文档复制为VIP权益,开通VIP直接复制
信息提交成功