# 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\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 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\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 static
没有合适的资源?快使用搜索试试~ 我知道了~
新浪某博热榜爬虫,利用 Github Action 的调度脚本
共419个文件
php:319个
md:37个
json:23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 134 浏览量
2024-04-13
21:27:01
上传
评论
收藏 634KB ZIP 举报
温馨提示
使用PHP实现的,爬取新浪某博每日热榜内容,以下是今日热榜 更新于 2024-04-13 20:50:32 Thurman猫一杯视频号被封 1.7M 车辆发生剐蹭女子叫嚣自己老公是国足 1.4M 在高原感受别样的春日浪漫 1.2M 保时捷撞车后女子砸门被行政拘留 1.1M 郑合惠子 垃圾堆里扒好东西 924.0K 张一山银发 892.0K 金秀贤金智媛不再合体 640.4K 伊朗对美国发出警告 509.0K 眼泪女王 482.6K 男子养了20年的海龟竟是国保玳瑁 480.9K 赵丽颖说谢谢狗哥 480.3K 伊朗扣押一艘和以色列相关货船 479.3K 绝大部分人感染HPV后会自愈 470.8K RNG直播需付费观看 446.3K 成龙为刘浩存提裙摆 440.8K 承欢记 404.6K
资源推荐
资源详情
资源评论
收起资源包目录
新浪某博热榜爬虫,利用 Github Action 的调度脚本 (419个子文件)
htmlDescriptor.css 3KB
.php_cs.dist 4KB
phpstan.neon.dist 187B
.editorconfig 271B
.gitignore 47B
.gitignore 28B
.gitignore 21B
.gitignore 6B
snippet-2.html 637B
snippet-1.html 406B
htmlDescriptor.js 354B
installed.json 54KB
composer.json 2KB
composer.json 2KB
composer.json 1KB
composer.json 1KB
composer.json 1KB
composer.json 1KB
composer.json 1KB
composer.json 1KB
composer.json 1004B
composer.json 1000B
composer.json 924B
composer.json 906B
composer.json 755B
composer.json 678B
composer.json 635B
composer.json 621B
composer.json 561B
composer.json 552B
composer.json 513B
composer.json 465B
composer.json 424B
composer.json 99B
LICENSE 1KB
LICENSE 1KB
LICENSE 1KB
LICENSE 1KB
LICENSE 1KB
LICENSE 1KB
LICENSE 1KB
LICENSE 1KB
LICENSE 1KB
LICENSE 1KB
LICENSE 1KB
LICENSE 1KB
LICENSE 1KB
LICENSE 1KB
LICENSE 1KB
LICENSE 1KB
composer.lock 52KB
Makefile 189B
CHANGELOG.md 81KB
UPGRADING.md 52KB
README.md 26KB
README.md 16KB
README.MD 10KB
README-ZH.md 9KB
README.md 9KB
CHANGELOG.md 7KB
README.md 4KB
README.md 3KB
CODE_OF_CONDUCT.md 3KB
README.md 2KB
CHANGELOG.md 2KB
Changelog.md 2KB
CHANGELOG.md 1KB
README.md 1KB
README.md 1KB
README.md 1KB
LICENSE.md 1KB
README.md 1KB
CHANGELOG.md 1KB
Changelog.md 1KB
README.md 949B
README.md 775B
CHANGELOG.md 746B
deprecations.md 724B
README.md 610B
README.md 563B
README.md 548B
SECURITY.md 428B
CHANGELOG.md 377B
README.md 372B
README.md 358B
README.md 277B
CHANGELOG.md 268B
Changelog.md 166B
PULL_REQUEST_TEMPLATE.md 132B
phpstan-baseline.neon 219B
phpQuery.php 164KB
GeneratedExtensionToMimeTypeMap.php 52KB
LazyCollection.php 34KB
Collection.php 34KB
HtmlDumper.php 34KB
Mbstring.php 28KB
EnumeratesValues.php 25KB
upperCase.php 24KB
lowerCase.php 24KB
Enumerable.php 24KB
共 419 条
- 1
- 2
- 3
- 4
- 5
资源评论
进击的代码家
- 粉丝: 2203
- 资源: 204
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
最新资源
- Qt开发知识、经验总结 包括Qss,数据库,Excel,Model/View等
- IV数据.xlsx
- foldcraftlauncher_262944.apk
- 珍藏多年的基于matlab实现潮流计算程序源代码集合,包含多个潮流计算程序.rar
- 使用FPGA实现串-并型乘法器
- 基于matlab实现针对基于双曲线定位的DV-Hop算法中误差误差出一种基于加权双曲线定位的DV-Hop改进算法.rar
- 基于matlab实现由遗传算法开发的整数规划,车辆调度问题.rar
- 电视家7.0(对电视配置要求高).apk
- 免费计算机毕业设计-基于JavaEE的医院病历管理系统设计与实现(包含论文+源码)
- 手机端 我的世界融合植物大战僵尸版.apk
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