Documentation

Utils
in package

Table of Contents

caselessRemove()  : array<string|int, mixed>
Remove the items given by the keys, case insensitively from the data.
copyToStream()  : mixed
Copy the contents of a stream into another stream until the given number of bytes have been read.
copyToString()  : string
Copy the contents of a stream into a string until the given number of bytes have been read.
hash()  : string
Calculate a hash of a stream.
modifyRequest()  : RequestInterface
Clone and modify a request with the given changes.
readLine()  : string
Read a line from the stream up to the maximum allowed buffer length.
streamFor()  : StreamInterface
Create a new stream based on the input type.
tryFopen()  : resource
Safely opens a PHP stream resource using a filename.
uriFor()  : UriInterface
Returns a UriInterface for the given value.

Methods

caselessRemove()

Remove the items given by the keys, case insensitively from the data.

public static caselessRemove(iteratable<string|int, string> $keys, array<string|int, mixed> $data) : array<string|int, mixed>
Parameters
$keys : iteratable<string|int, string>
$data : array<string|int, mixed>
Return values
array<string|int, mixed> —

copyToStream()

Copy the contents of a stream into another stream until the given number of bytes have been read.

public static copyToStream(StreamInterface $source, StreamInterface $dest[, int $maxLen = -1 ]) : mixed
Parameters
$source : StreamInterface

Stream to read from

$dest : StreamInterface

Stream to write to

$maxLen : int = -1

Maximum number of bytes to read. Pass -1 to read the entire stream.

Tags
throws
RuntimeException

on error.

Return values
mixed —

copyToString()

Copy the contents of a stream into a string until the given number of bytes have been read.

public static copyToString(StreamInterface $stream[, int $maxLen = -1 ]) : string
Parameters
$stream : StreamInterface

Stream to read

$maxLen : int = -1

Maximum number of bytes to read. Pass -1 to read the entire stream.

Tags
throws
RuntimeException

on error.

Return values
string —

hash()

Calculate a hash of a stream.

public static hash(StreamInterface $stream, string $algo[, bool $rawOutput = false ]) : string

This method reads the entire stream to calculate a rolling hash, based on PHP's hash_init functions.

Parameters
$stream : StreamInterface

Stream to calculate the hash for

$algo : string

Hash algorithm (e.g. md5, crc32, etc)

$rawOutput : bool = false

Whether or not to use raw output

Tags
throws
RuntimeException

on error.

Return values
string —

Returns the hash of the stream

modifyRequest()

Clone and modify a request with the given changes.

public static modifyRequest(RequestInterface $request, array<string|int, mixed> $changes) : RequestInterface

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.
Parameters
$request : RequestInterface

Request to clone and modify.

$changes : array<string|int, mixed>

Changes to apply.

Return values
RequestInterface —

readLine()

Read a line from the stream up to the maximum allowed buffer length.

public static readLine(StreamInterface $stream[, int|null $maxLength = null ]) : string
Parameters
$stream : StreamInterface

Stream to read from

$maxLength : int|null = null

Maximum buffer length

Return values
string —

streamFor()

Create a new stream based on the input type.

public static streamFor([resource|string|int|float|bool|StreamInterface|callable|Iterator|null $resource = '' ][, array<string|int, mixed> $options = [] ]) : StreamInterface

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.
Parameters
$resource : resource|string|int|float|bool|StreamInterface|callable|Iterator|null = ''

Entity body data

$options : array<string|int, mixed> = []

Additional options

Tags
throws
InvalidArgumentException

if the $resource arg is not valid.

Return values
StreamInterface —

tryFopen()

Safely opens a PHP stream resource using a filename.

public static tryFopen(string $filename, string $mode) : resource

When fopen fails, PHP normally raises a warning. This function adds an error handler that checks for errors and throws an exception instead.

Parameters
$filename : string

File to open

$mode : string

Mode used to open the file

Tags
throws
RuntimeException

if the file cannot be opened

Return values
resource —

uriFor()

Returns a UriInterface for the given value.

public static uriFor(string|UriInterface $uri) : UriInterface

This function accepts a string or UriInterface and returns a UriInterface for the given value. If the value is already a UriInterface, it is returned as-is.

Parameters
$uri : string|UriInterface
Tags
throws
InvalidArgumentException
Return values
UriInterface —

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