|
|
|
|
# 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 $options = [])`
|
|
|
|
|
|
|
|
|
|
Create a new stream based on the input type.
|
|
|
|
|
|
|
|
|
|
Options is an associative array that can contain the following keys:
|
|
|
|
|
|
|
|
|
|
* - metadata: Array of custom metadata.
|
|
|
|
|
* - size: Size of the stream.
|
|
|
|
|
|
|
|
|
|
This method accepts the following `$resource` types:
|
|
|
|
|
|
|
|
|
|
- `Psr\Http\Message\StreamInterface`: Returns the value as-is.
|
|
|
|
|
- `string`: Creates a stream object that uses the given string as the contents.
|
|
|
|
|
- `resource`: Creates a stream object that wraps the given PHP stream resource.
|
|
|
|
|
- `Iterator`: If the provided value implements `Iterator`, then a read-only
|
|
|
|
|
stream object will be created that wraps the given iterable. Each time the
|
|
|
|
|
stream is read from, data from the iterator will fill a buffer and will be
|
|
|
|
|
continuously called until the buffer is equal to the requested read size.
|
|
|
|
|
Subsequent read calls will first read from the buffer and then call `next`
|
|
|
|
|
on the underlying iterator until it is exhausted.
|
|
|
|
|
- `object` with `__toString()`: If the object has the `__toString()` method,
|
|
|
|
|
the object will be cast to a string and then a stream will be returned that
|
|
|
|
|
uses the string value.
|
|
|
|
|
- `NULL`: When `null` is passed, an empty stream object is returned.
|
|
|
|
|
- `callable` When a callable is passed, a read-only stream object will be
|
|
|
|
|
created that invokes the given callable. The callable is invoked with the
|
|
|
|
|
number of suggested bytes to read. The callable can return any number of
|
|
|
|
|
bytes, but MUST return `false` when there is no more data to return. The
|
|
|
|
|
stream object that wraps the callable will invoke the callable until the
|
|
|
|
|
number of requested bytes are available. Any additional bytes will be
|
|
|
|
|
buffered and used in subsequent reads.
|
|
|
|
|
|
|
|
|
|
```php
|
|
|
|
|
$stream = GuzzleHttp\Psr7\stream_for('foo');
|
|
|
|
|
$stream = GuzzleHttp\Psr7\stream_for(fopen('/path/to/file', 'r'));
|
|
|
|
|
|
|
|
|
|
$generator = function ($bytes) {
|
|
|
|
|
for ($i = 0; $i < $bytes; $i++) {
|
|
|
|
|
yield ' ';
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
$stream = GuzzleHttp\Psr7\stream_for($generator(100));
|
|
|
|
|
```
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
## `function parse_header`
|
|
|
|
|
|
|
|
|
|
`function parse_header($header)`
|
|
|
|
|
|
|
|
|
|
Parse an array of header values containing ";" separated data into an array of
|
|
|
|
|
associative arrays representing the header key value pair data of the header.
|
|
|
|
|
When a parameter does not contain a value, but just contains a key, this
|
|
|
|
|
function will inject a key with a '' string value.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
## `function normalize_header`
|
|
|
|
|
|
|
|
|
|
`function normalize_header($header)`
|
|
|
|
|
|
|
|
|
|
Converts an array of header values that may contain comma separated headers
|
|
|
|
|
into an array of headers with no comma separated values.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
## `function modify_request`
|
|
|
|
|
|
|
|
|
|
`function modify_request(RequestInterface $request, array $changes)`
|
|
|
|
|
|
|
|
|
|
Clone and modify a request with the given changes. This method is useful for
|
|
|
|
|
reducing the number of clones needed to mutate a message.
|
|
|
|
|
|
|
|
|
|
The changes can be one of:
|
|
|
|
|
|
|
|
|
|
- method: (string) Changes the HTTP method.
|
|
|
|
|
- set_headers: (array) Sets the given headers.
|
|
|
|
|
- remove_headers: (array) Remove the given headers.
|
|
|
|
|
- body: (mixed) Sets the given body.
|
|
|
|
|
- uri: (UriInterface) Set the URI.
|
|
|
|
|
- query: (string) Set the query string value of the URI.
|
|
|
|
|
- version: (string) Set the protocol version.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
## `function rewind_body`
|
|
|
|
|
|
|
|
|
|
`function rewind_body(MessageInterface $message)`
|
|
|
|
|
|
|
|
|
|
Attempts to rewind a message body and throws an exception on failure. The body
|
|
|
|
|
of the message will only be rewound if a call to `tell()` returns a value other
|
|
|
|
|
than `0`.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
## `function try_fopen`
|
|
|
|
|
|
|
|
|
|
`function try_fopen($filename, $mode)`
|
|
|
|
|
|
|
|
|
|
Safely opens a PHP stream resource using a filename.
|
|
|
|
|
|
|
|
|
|
When fopen fails, PHP normally raises a warning. This function adds an error
|
|
|
|
|
handler that checks for errors and throws an exception instead.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
## `function copy_to_string`
|
|
|
|
|
|
|
|
|
|
`function copy_to_string(StreamInterface $stream, $maxLen = -1)`
|
|
|
|
|
|
|
|
|
|
Copy the contents of a stream into a string until the given number of bytes
|
|
|
|
|
have been read.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
## `function copy_to_stream`
|
|
|
|
|
|
|
|
|
|
`function copy_to_stream(StreamInterface $source, StreamInterface $dest, $maxLen = -1)`
|
|
|
|
|
|
|
|
|
|
Copy the contents of a stream into another stream until the given number of
|
|
|
|
|
bytes have been read.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
## `function hash`
|
|
|
|
|
|
|
|
|
|
`function hash(StreamInterface $stream, $algo, $rawOutput = false)`
|
|
|
|
|
|
|
|
|
|
Calculate a hash of a Stream. This method reads the entire stream to calculate
|
|
|
|
|
a rolling hash (based on PHP's hash_init functions).
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
## `function readline`
|
|
|
|
|
|
|
|
|
|
`function readline(StreamInterface $stream, $maxLength = null)`
|
|
|
|
|
|
|
|
|
|
Read a line from the stream up to the maximum allowed buffer length.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
## `function parse_request`
|
|
|
|
|
|
|
|
|
|
`function parse_request($message)`
|
|
|
|
|
|
|
|
|
|
Parses a request message string into a request object.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
## `function parse_response`
|
|
|
|
|
|
|
|
|
|
`function parse_response($message)`
|
|
|
|
|
|
|
|
|
|
Parses a response message string into a response object.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
## `function parse_query`
|
|
|
|
|
|
|
|
|
|
`function parse_query($str, $urlEncoding = true)`
|
|
|
|
|
|
|
|
|
|
Parse a query string into an associative array.
|
|
|
|
|
|
|
|
|
|
If multiple values are found for the same key, the value of that key value pair
|
|
|
|
|
will become an array. This function does not parse nested PHP style arrays into
|
|
|
|
|
an associative array (e.g., `foo[a]=1&foo[b]=2` will be parsed into
|
|
|
|
|
`['foo[a]' => '1', 'foo[b]' => '2']`).
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
## `function build_query`
|
|
|
|
|
|
|
|
|
|
`function build_query(array $params, $encoding = PHP_QUERY_RFC3986)`
|
|
|
|
|
|
|
|
|
|
Build a query string from an array of key value pairs.
|
|
|
|
|
|
|
|
|
|
This function can use the return value of parse_query() to build a query string.
|
|
|
|
|
This function does not modify the provided keys when an array is encountered
|
|
|
|
|
(like http_build_query would).
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
## `function mimetype_from_filename`
|
|
|
|
|
|
|
|
|
|
`function mimetype_from_filename($filename)`
|
|
|
|
|
|
|
|
|
|
Determines the mimetype of a file by looking at its extension.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
## `function mimetype_from_extension`
|
|
|
|
|
|
|
|
|
|
`function mimetype_from_extension($extension)`
|
|
|
|
|
|
|
|
|
|
Maps a file extensions to a mimetype.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
# Additional URI Methods
|
|
|
|
|
|
|
|
|
|
Aside from the standard `Psr\Http\Message\UriInterface` implementation in form of the `GuzzleHttp\Psr7\Uri` class,
|
|
|
|
|
this library also provides additional functionality when working with URIs as static methods.
|
|
|
|
|
|
|
|
|
|
## URI Types
|
|
|
|
|
|
|
|
|
|
An instance of `Psr\Http\Message\UriInterface` can either be an absolute URI or a relative reference.
|
|
|
|
|
An absolute URI has a scheme. A relative reference is used to express a URI relative to another URI,
|
|
|
|
|
the base URI. Relative references can be divided into several forms according to
|
|
|
|
|
[RFC 3986 Section 4.2](https://tools.ietf.org/html/rfc3986#section-4.2):
|
|
|
|
|
|
|
|
|
|
- network-path references, e.g. `//example.com/path`
|
|
|
|
|
- absolute-path references, e.g. `/path`
|
|
|
|
|
- relative-path references, e.g. `subpath`
|
|
|
|
|
|
|
|
|
|
The following methods can be used to identify the type of the URI.
|
|
|
|
|
|
|
|
|
|
### `GuzzleHttp\Psr7\Uri::isAbsolute`
|
|
|
|
|
|
|
|
|
|
`public static function isAbsolute(UriInterface $uri): bool`
|
|
|
|
|
|
|
|
|
|
Whether the URI is absolute, i.e. it has a scheme.
|
|
|
|
|
|
|
|
|
|
### `GuzzleHttp\Psr7\Uri::isNetworkPathReference`
|
|
|
|
|
|
|
|
|
|
`public static function isNetworkPathReference(UriInterface $uri): bool`
|
|
|
|
|
|
|
|
|
|
Whether the URI is a network-path reference. A relative reference that begins with two slash characters is
|
|
|
|
|
termed an network-path reference.
|
|
|
|
|
|
|
|
|
|
### `GuzzleHttp\Psr7\Uri::isAbsolutePathReference`
|
|
|
|
|
|
|
|
|
|
`public static function isAbsolutePathReference(UriInterface $uri): bool`
|
|
|
|
|
|
|
|
|
|
Whether the URI is a absolute-path reference. A relative reference that begins with a single slash character is
|
|
|
|
|
termed an absolute-path reference.
|
|
|
|
|
|
|
|
|
|
### `GuzzleHttp\Psr7\Uri::isRelativePathReference`
|
|
|
|
|
|
|
|
|
|
`public static function isRelativePathReference(UriInterface $uri): bool`
|
|
|
|
|
|
|
|
|
|
Whether the URI is a relative-path reference. A relative reference that does not begin with a slash character is
|
|
|
|
|
termed a relative-path reference.
|
|
|
|
|
|
|
|
|
|
### `GuzzleHttp\Psr7\Uri::isSameDocumentReference`
|
|
|
|
|
|
|
|
|
|
`public static function isSameDocumentReference(UriInterface $uri, UriInterface $base = null): bool`
|
|
|
|
|
|
|
|
|
|
Whether the URI is a same-document reference. A same-document reference refers to a URI that is, aside from its
|
|
|
|
|
fragment component, identical to the base URI. When no base URI is given, only an empty URI reference
|
|
|
|
|
(apart from its fragment) is considered a same-document reference.
|
|
|
|
|
|
|
|
|
|
## URI Components
|
|
|
|
|
|
|
|
|
|
Additional methods to work with URI components.
|
|
|
|
|
|
|
|
|
|
### `GuzzleHttp\Psr7\Uri::isDefaultPort`
|
|
|
|
|
|
|
|
|
|
`public static function isDefaultPort(UriInterface $uri): bool`
|
|
|
|
|
|
|
|
|
|
Whether the URI has the default port of the current scheme. `Psr\Http\Message\UriInterface::getPort` may return null
|
|
|
|
|
or the standard port. This method can be used independently of the implementation.
|
|
|
|
|
|
|
|
|
|
### `GuzzleHttp\Psr7\Uri::composeComponents`
|
|
|
|
|
|
|
|
|
|
`public static function composeComponents($scheme, $authority, $path, $query, $fragment): string`
|
|
|
|
|
|
|
|
|
|
Composes a URI reference string from its various components according to
|
|
|
|
|
[RFC 3986 Section 5.3](https://tools.ietf.org/html/rfc3986#section-5.3). Usually this method does not need to be called
|
|
|
|
|
manually but instead is used indirectly via `Psr\Http\Message\UriInterface::__toString`.
|
|
|
|
|
|
|
|
|
|
### `GuzzleHttp\Psr7\Uri::fromParts`
|
|
|
|
|
|
|
|
|
|
`public static function fromParts(array $parts): UriInterface`
|
|
|
|
|
|
|
|
|
|
Creates a URI from a hash of [`parse_url`](http://php.net/manual/en/function.parse-url.php) components.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
### `GuzzleHttp\Psr7\Uri::withQueryValue`
|
|
|
|
|
|
|
|
|
|
`public static function withQueryValue(UriInterface $uri, $key, $value): UriInterface`
|
|
|
|
|
|
|
|
|
|
Creates a new URI with a specific query string value. Any existing query string values that exactly match the
|
|
|
|
|
provided key are removed and replaced with the given key value pair. A value of null will set the query string
|
|
|
|
|
key without a value, e.g. "key" instead of "key=value".
|
|
|
|
|
|
|
|
|
|
### `GuzzleHttp\Psr7\Uri::withQueryValues`
|
|
|
|
|
|
|
|
|
|
`public static function withQueryValues(UriInterface $uri, array $keyValueArray): UriInterface`
|
|
|
|
|
|
|
|
|
|
Creates a new URI with multiple query string values. It has the same behavior as `withQueryValue()` but for an
|
|
|
|
|
associative array of key => value.
|
|
|
|
|
|
|
|
|
|
### `GuzzleHttp\Psr7\Uri::withoutQueryValue`
|
|
|
|
|
|
|
|
|
|
`public static function withoutQueryValue(UriInterface $uri, $key): UriInterface`
|
|
|
|
|
|
|
|
|
|
Creates a new URI with a specific query string value removed. Any existing query string values that exactly match the
|
|
|
|
|
provided key are removed.
|
|
|
|
|
|
|
|
|
|
## Reference Resolution
|
|
|
|
|
|
|
|
|
|
`GuzzleHttp\Psr7\UriResolver` provides methods to resolve a URI reference in the context of a base URI according
|
|
|
|
|
to [RFC 3986 Section 5](https://tools.ietf.org/html/rfc3986#section-5). This is for example also what web browsers
|
|
|
|
|
do when resolving a link in a website based on the current request URI.
|
|
|
|
|
|
|
|
|
|
### `GuzzleHttp\Psr7\UriResolver::resolve`
|
|
|
|
|
|
|
|
|
|
`public static function resolve(UriInterface $base, UriInterface $rel): UriInterface`
|
|
|
|
|
|
|
|
|
|
Converts the relative URI into a new URI that is resolved against the base URI.
|
|
|
|
|
|
|
|
|
|
### `GuzzleHttp\Psr7\UriResolver::removeDotSegments`
|
|
|
|
|
|
|
|
|
|
`public static function removeDotSegments(string $path): string`
|
|
|
|
|
|
|
|
|
|
Removes dot segments from a path and returns the new path according to
|
|
|
|
|
[RFC 3986 Section 5.2.4](https://tools.ietf.org/html/rfc3986#section-5.2.4).
|
|
|
|
|
|
|
|
|
|
### `GuzzleHttp\Psr7\UriResolver::relativize`
|
|
|
|
|
|
|
|
|
|
`public static function relativize(UriInterface $base, UriInterface $target): UriInterface`
|
|
|
|
|
|
|
|
|
|
Returns the target URI as a relative reference from the base URI. This method is the counterpart to resolve():
|
|
|
|
|
|
|
|
|
|
```php
|
|
|
|
|
(string) $target === (string) UriResolver::resolve($base, UriResolver::relativize($base, $target))
|
|
|
|
|
```
|
|
|
|
|
|
|
|
|
|
One use-case is to use the current request URI as base URI and then generate relative links in your documents
|
|
|
|
|
to reduce the document size or offer self-contained downloadable document archives.
|
|
|
|
|
|
|
|
|
|
```php
|
|
|
|
|
$base = new Uri('http://example.com/a/b/');
|
|
|
|
|
echo UriResolver::relativize($base, new Uri('http://example.com/a/b/c')); // prints 'c'.
|
|
|
|
|
echo UriResolver::relativize($base, new Uri('http://example.com/a/x/y')); // prints '../x/y'.
|
|
|
|
|
echo UriResolver::relativize($base, new Uri('http://example.com/a/b/?q')); // prints '?q'.
|
|
|
|
|
echo UriResolver::relativize($base, new Uri('http://example.org/a/b/')); // prints '//example.org/a/b/'.
|
|
|
|
|
```
|
|
|
|
|
|
|
|
|
|
## Normalization and Comparison
|
|
|
|
|
|
|
|
|
|
`GuzzleHttp\Psr7\UriNormalizer` provides methods to normalize and compare URIs according to
|
|
|
|
|
[RFC 3986 Section 6](https://tools.ietf.org/html/rfc3986#section-6).
|
|
|
|
|
|
|
|
|
|
### `GuzzleHttp\Psr7\UriNormalizer::normalize`
|
|
|
|
|
|
|
|
|
|
`public static function normalize(UriInterface $uri, $flags = self::PRESERVING_NORMALIZATIONS): UriInterface`
|
|
|
|
|
|
|
|
|
|
Returns a normalized URI. The scheme and host component are already normalized to lowercase per PSR-7 UriInterface.
|
|
|
|
|
This methods adds additional normalizations that can be configured with the `$flags` parameter which is a bitmask
|
|
|
|
|
of normalizations to apply. The following normalizations are available:
|
|
|
|
|
|
|
|
|
|
- `UriNormalizer::PRESERVING_NORMALIZATIONS`
|
|
|
|
|
|
|
|
|
|
Default normalizations which only include the ones that preserve semantics.
|
|
|
|
|
|
|
|
|
|
- `UriNormalizer::CAPITALIZE_PERCENT_ENCODING`
|
|
|
|
|
|
|
|
|
|
All letters within a percent-encoding triplet (e.g., "%3A") are case-insensitive, and should be capitalized.
|
|
|
|
|
|
|
|
|
|
Example: `http://example.org/a%c2%b1b` → `http://example.org/a%C2%B1b`
|
|
|
|
|
|
|
|
|
|
- `UriNormalizer::DECODE_UNRESERVED_CHARACTERS`
|
|
|
|
|
|
|
|
|
|
Decodes percent-encoded octets of unreserved characters. For consistency, percent-encoded octets in the ranges of
|
|
|
|
|
ALPHA (%41–%5A and %61–%7A), DIGIT (%30–%39), hyphen (%2D), period (%2E), underscore (%5F), or tilde (%7E) should
|
|
|
|
|
not be created by URI producers and, when found in a URI, should be decoded to their corresponding unreserved
|
|
|
|
|
characters by URI normalizers.
|
|
|
|
|
|
|
|
|
|
Example: `http://example.org/%7Eusern%61me/` → `http://example.org/~username/`
|
|
|
|
|
|
|
|
|
|
- `UriNormalizer::CONVERT_EMPTY_PATH`
|
|
|
|
|
|
|
|
|
|
Converts the empty path to "/" for http and https URIs.
|
|
|
|
|
|
|
|
|
|
Example: `http://example.org` → `http://example.org/`
|
|
|
|
|
|
|
|
|
|
- `UriNormalizer::REMOVE_DEFAULT_HOST`
|
|
|
|
|
|
|
|
|
|
Removes the default host of the given URI scheme from the URI. Only the "file" scheme defines the default host
|
|
|
|
|
"localhost". All of `file:/myfile`, `file:///myfile`, and `file://localhost/myfile` are equivalent according to
|
|
|
|
|
RFC 3986.
|
|
|
|
|
|
|
|
|
|
Example: `file://localhost/myfile` → `file:///myfile`
|
|
|
|
|
|
|
|
|
|
- `UriNormalizer::REMOVE_DEFAULT_PORT`
|
|
|
|
|
|
|
|
|
|
Removes the default port of the given URI scheme from the URI.
|
|
|
|
|
|
|
|
|
|
Example: `http://example.org:80/` → `http://example.org/`
|
|
|
|
|
|
|
|
|
|
- `UriNormalizer::REMOVE_DOT_SEGMENTS`
|
|
|
|
|
|
|
|
|
|
Removes unnecessary dot-segments. Dot-segments in relative-path references are not removed as it would
|
|
|
|
|
change the semantics of the URI reference.
|
|
|
|
|
|
|
|
|
|
Example: `http://example.org/../a/b/../c/./d.html` → `http://example.org/a/c/d.html`
|
|
|
|
|
|
|
|
|
|
- `UriNormalizer::REMOVE_DUPLICATE_SLASHES`
|
|
|
|
|
|
|
|
|
|
Paths which include two or more adjacent slashes are converted to one. Webservers usually ignore duplicate slashes
|
|
|
|
|
and treat those URIs equivalent. But in theory those URIs do not need to be equivalent. So this normalization
|
|
|
|
|
may change the semantics. Encoded slashes (%2F) are not removed.
|
|
|
|
|
|
|
|
|
|
Example: `http://example.org//foo///bar.html` → `http://example.org/foo/bar.html`
|
|
|
|
|
|
|
|
|
|
- `UriNormalizer::SORT_QUERY_PARAMETERS`
|
|
|
|
|
|
|
|
|
|
Sort query parameters with their values in alphabetical order. However, the order of parameters in a URI may be
|
|
|
|
|
significant (this is not defined by the standard). So this normalization is not safe and may change the semantics
|
|
|
|
|
of the URI.
|
|
|
|
|
|
|
|
|
|
Example: `?lang=en&article=fred` → `?article=fred&lang=en`
|
|
|
|
|
|
|
|
|
|
### `GuzzleHttp\Psr7\UriNormalizer::isEquivalent`
|
|
|
|
|
|
|
|
|
|
`public static function isEquivalent(UriInterface $uri1, UriInterface $uri2, $normalizations = self::PRESERVING_NORMALIZATIONS): bool`
|
|
|
|
|
|
|
|
|
|
Whether two URIs can be considered equivalent. Both URIs are normalized automatically before comparison with the given
|
|
|
|
|
`$normalizations` bitmask. The method also accepts relative URI references and returns true when they are equivalent.
|
|
|
|
|
This of course assumes they will be resolved against the same base URI. If this is not the case, determination of
|
|
|
|
|
equivalence or difference of relative references does not mean anything.
|