# PSR-7 Message Implementation
This repository contains a full [PSR-7](https://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)
## Features
This package comes with a number of stream implementations and stream
decorators.
## Installation
```shell
composer require guzzlehttp/psr7
```
## Version Guidance
| Version | Status | PHP Version |
|---------|---------------------|--------------|
| 1.x | Security fixes only | >=5.4,<8.1 |
| 2.x | Latest | >=7.2.5,<8.4 |
## 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;
private $stream;
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);
```
##
没有合适的资源?快使用搜索试试~ 我知道了~
在线的货币兑换平台源码下载
共2000个文件
php:1154个
md:269个
json:161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
0 下载量 186 浏览量
2024-01-11
09:34:50
上传
评论
收藏 56.99MB ZIP 举报
温馨提示
在线的货币兑换平台,可帮助全球各地的个人和企业将货币从一种货币兑换为另一种货币。该货币兑换平台是 Codecanyon 中最先进的脚本。
资源推荐
资源详情
资源评论
收起资源包目录
在线的货币兑换平台源码下载 (2000个子文件)
ca-bundle.crt 256KB
bootstrap.min.css 160KB
bootstrap.min.css 160KB
app.css 154KB
main.css 147KB
line-awesome.css 115KB
animate.css 100KB
line-awesome.min.css 88KB
font-awesome.css 76KB
main.css 65KB
animate.css 61KB
all.min.css 58KB
iziToast.min.css 41KB
main.css 27KB
swiper.min.css 19KB
exception.css 17KB
select2.min.css 15KB
spectrum.css 15KB
datepicker.min.css 12KB
installer.css 9KB
html.css 7KB
fontawesome-iconpicker.min.css 6KB
custom.css 6KB
codemirror.min.css 6KB
slick.css 5KB
custom.css 5KB
default.css 5KB
simplebar.css 4KB
nice-select.css 4KB
odometer.css 3KB
verification_code.css 3KB
verification-code.css 3KB
htmlDescriptor.css 3KB
exception_full.css 3KB
main.css 2KB
monokai.min.css 2KB
bootstrap-toggle.min.css 2KB
jquery.treeView.css 1KB
ConfigForm.css 301B
error.css 275B
frontend.csv 319B
frontend.csv 319B
.editorconfig 258B
.env 0B
la-solid-900.eot 221KB
fa-solid-900.eot 198KB
la-brands-400.eot 153KB
fa-brands-400.eot 131KB
fa-regular-400.eot 33KB
la-regular-400.eot 33KB
nicEditIcons-latest.gif 4KB
.gitattributes 152B
.gitignore 119B
.gitignore 47B
.gitignore 23B
.gitignore 21B
.gitignore 14B
.gitignore 14B
.gitignore 14B
.gitignore 14B
.gitignore 14B
.gitignore 14B
.gitignore 10B
.htaccess 681B
index.html 72KB
report.html 2KB
mustRead.html 1KB
软希网www.58soho.cn更多资源下载.html 68B
软希网www.58soho.cn更多资源下载.html 68B
login.jpg 536KB
63538d330e0f61666420019.jpg 164KB
63a6a215844161671864853.jpg 103KB
631c5979dec951662802297.jpg 96KB
63d0e81b972c41674635291.jpg 86KB
63d0df4910ae61674633033.jpg 86KB
63d0e839971a31674635321.jpg 74KB
63d0de4bf07021674632779.jpg 74KB
635526f85b0681666524920.jpg 64KB
6353ae2a8fa241666428458.jpg 58KB
preview.jpg 40KB
preview.jpg 38KB
thumb_63d0df4910ae61674633033.jpg 30KB
thumb_63d0e81b972c41674635291.jpg 30KB
thumb_63d0e839971a31674635321.jpg 22KB
thumb_63d0de4bf07021674632779.jpg 22KB
apexcharts.min.js 448KB
chart.js.2.8.0.js 357KB
fontawesome-iconpicker.js 329KB
simplebar.js 173KB
codemirror.min.js 167KB
swiper.min.js 118KB
slick.js 90KB
jquery-3.6.0.min.js 87KB
jquery-3.6.0.min.js 87KB
spectrum.js 81KB
bootstrap.bundle.min.js 76KB
bootstrap.bundle.min.js 76KB
select2.min.js 71KB
card.js 57KB
nicEdit.js 49KB
共 2000 条
- 1
- 2
- 3
- 4
- 5
- 6
- 20
资源评论
软希源码
- 粉丝: 3964
- 资源: 3535
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