# 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.
[![Build Status](https://travis-ci.org/guzzle/psr7.svg?branch=master)](https://travis-ci.org/guzzle/psr7)
# 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\stream_for('abc, ');
$b = Psr7\stream_for('123.');
$composed = new Psr7\AppendStream([$a, $b]);
$composed->addStream(Psr7\stream_for(' 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\stream_for(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\stream_for();
// 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\stream_for('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 deflate or gzipped content.
This stream decorator skips the first 10 bytes of the given stream to remove
the gzip header, 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\stream_for(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\stream_for('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\stream_for('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\stream_for('hello!');
$resource = StreamWrapper::getResource($stream);
echo fread($resource, 6); // outputs hello!
```
# Function API
There are various functions available under the `GuzzleHttp\Psr7` namespace.
## `function str`
`function str(MessageInterface $message)`
Returns the string representation of an HTTP message.
```php
$request = new GuzzleHttp\Psr7\Request('GET', 'http://example.com');
echo GuzzleHttp\Psr7\str($request);
```
## `function uri_for`
`function uri_for($uri)`
This function accepts a string or `Psr\Http\Message\UriInterface` and returns a
UriInterface for the given value. If the value is already a `UriInterface`, it
is returned as-is.
```php
$uri = GuzzleHttp\Psr7\uri_for('http://example.com');
assert($uri === GuzzleHttp\Psr7\uri_for($uri));
```
## `function stream_for`
`function stream_for($resource = '', array $options =
没有合适的资源?快使用搜索试试~ 我知道了~
mantisbt-2.24.1.zip
共1901个文件
php:833个
txt:295个
png:281个
需积分: 9 10 下载量 81 浏览量
2020-06-03
21:46:29
上传
评论
收藏 15.56MB ZIP 举报
温馨提示
官方开源软件mantisbt-2.24.1.zip
资源推荐
资源详情
资源评论
收起资源包目录
mantisbt-2.24.1.zip (1901个子文件)
TARADO5.BAT 1KB
pimple.c 37KB
CHANGELOG 1KB
COMMITMENT 2KB
web.config 1KB
web.config 681B
Web.config 309B
Web.config 309B
Web.config 309B
Web.config 309B
Web.config 309B
Web.config 309B
Web.config 309B
Web.config 309B
CREDITS 8KB
ace.css 386KB
ace.min.css 291KB
bootstrap-3.4.1.css 143KB
bootstrap-3.4.1.min.css 119KB
ace-rtl.css 102KB
ace-rtl.min.css 73KB
ace-part2.css 44KB
font-awesome-4.6.3.min.css 28KB
common.css 24KB
common.css 24KB
common.css 24KB
common.css 24KB
ace-skins.css 18KB
ace-skins.min.css 14KB
ace-mantis.css 14KB
dropzone-5.5.0.css 12KB
dropzone-5.5.0.min.css 9KB
bootstrap-datetimepicker-4.17.47.min.css 8KB
fonts.css 7KB
default.css 3KB
epub.css 1KB
epub.css 1KB
epub.css 1KB
epub.css 1KB
securimage.css 1KB
login.css 827B
rtl.css 652B
doc.css 542B
brand.css 278B
brand.css 278B
brand.css 278B
brand.css 278B
print.css 192B
print.css 192B
print.css 192B
print.css 192B
default.css 83B
default.css 83B
default.css 83B
default.css 83B
phpunit.xml.dist 448B
phpstan.neon.dist 25B
Dockerfile 387B
mantis.dtd 2KB
xmlschema03.dtd 2KB
xmlschema.dtd 1KB
fontawesome-webfont.eot 75KB
glyphicons-halflings-regular.eot 20KB
ajax-loader.gif 8KB
mantis_logo.gif 6KB
adodb2.gif 1KB
adodb2.gif 1KB
adodb.gif 1KB
adodb.gif 1KB
php_pimple.h 6KB
pimple_compat.h 3KB
.hhconfig 17B
FastRoute.hhi 4KB
.htaccess 190B
.htaccess 190B
.htaccess 190B
.htaccess 190B
.htaccess 190B
.htaccess 190B
.htaccess 190B
.htaccess 190B
.htaccess 190B
.htaccess 176B
.htaccess 176B
.htaccess 173B
.htaccess 173B
.htaccess 78B
.htaccess 59B
changelog_rssbuilder.htm 5KB
index.html 399KB
index.html 333KB
index.html 184KB
index.html 158KB
index.html 2B
index.html 0B
favicon.ico 1KB
.imgbotconfig 118B
bg5.jpg 48KB
bg4.jpg 16KB
bg3.jpg 15KB
共 1901 条
- 1
- 2
- 3
- 4
- 5
- 6
- 20
资源评论
NIO4444
- 粉丝: 1981
- 资源: 44
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
最新资源
- IMG_20240425_120538.jpg
- My Complete Genome_6k Base-Pairs of Phenotype SNPs_Complete Raw Data.zip
- qt 的mqtt测试demo
- 移动应用开发教程-zip.zip
- mosquitto-2.018-install-windows-x64
- FTPServer FTP 服务器,绿色免安装,单文件
- 梦畅语音点名软件,上课点名
- 利用ADNI数据集和标签,在tensorflow框架上使用tensorlayer接口,通过架构u-net实现海马体的分割
- Kutools for Word v9.0 office word 插件
- 修复Windows 10 LTSC 2021资源占用率高
资源上传下载、课程学习等过程中有任何疑问或建议,欢迎提出宝贵意见哦~我们会及时处理!
点击此处反馈
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