3. Interfaces
3.1 Psr\Http\Message\MessageInterface
<?php
namespace Psr\Http\Message;
/**
* HTTP messages consist of requests from a client to a server and responses
* from a server to a client. This interface defines the methods common to
* each.
*
* Messages are considered immutable; all methods that might change state MUST
* be implemented such that they retain the internal state of the current
* message and return an instance that contains the changed state.
*
* @see http://www.ietf.org/rfc/rfc7230.txt
* @see http://www.ietf.org/rfc/rfc7231.txt
*/
interface MessageInterface
{
/**
* Retrieves the HTTP protocol version as a string.
*
* The string MUST contain only the HTTP version number (e.g., "1.1", "1.0").
*
* @return string HTTP protocol version.
*/
public function getProtocolVersion();
/**
* Return an instance with the specified HTTP protocol version.
*
* The version string MUST contain only the HTTP version number (e.g.,
* "1.1", "1.0").
*
* This method MUST be implemented in such a way as to retain the
* immutability of the message, and MUST return an instance that has the
* new protocol version.
*
* @param string $version HTTP protocol version
* @return static
*/
public function withProtocolVersion($version);
/**
* Retrieves all message header values.
*
* The keys represent the header name as it will be sent over the wire, and
* each value is an array of strings associated with the header.
*
* // Represent the headers as a string
* foreach ($message->getHeaders() as $name => $values) {
* echo $name . ': ' . implode(', ', $values);
* }
*
* // Emit headers iteratively:
* foreach ($message->getHeaders() as $name => $values) {
* foreach ($values as $value) {
* header(sprintf('%s: %s', $name, $value), false);
* }
* }
*
* While header names are not case-sensitive, getHeaders() will preserve the
* exact case in which headers were originally specified.
*
* @return string[][] Returns an associative array of the message's headers.
* Each key MUST be a header name, and each value MUST be an array of
* strings for that header.
*/
public function getHeaders();
/**
* Checks if a header exists by the given case-insensitive name.
*
* @param string $name Case-insensitive header field name.
* @return bool Returns true if any header names match the given header
* name using a case-insensitive string comparison. Returns false if
* no matching header name is found in the message.
*/
public function hasHeader($name);
/**
* Retrieves a message header value by the given case-insensitive name.
*
* This method returns an array of all the header values of the given
* case-insensitive header name.
*
* If the header does not appear in the message, this method MUST return an
* empty array.
*
* @param string $name Case-insensitive header field name.
* @return string[] An array of string values as provided for the given
* header. If the header does not appear in the message, this method MUST
* return an empty array.
*/
public function getHeader($name);
/**
* Retrieves a comma-separated string of the values for a single header.
*
* This method returns all of the header values of the given
* case-insensitive header name as a string concatenated together using
* a comma.
*
* NOTE: Not all header values may be appropriately represented using
* comma concatenation. For such headers, use getHeader() instead
* and supply your own delimiter when concatenating.
*
* If the header does not appear in the message, this method MUST return
* an empty string.
*
* @param string $name Case-insensitive header field name.
* @return string A string of values as provided for the given header
* concatenated together using a comma. If the header does not appear in
* the message, this method MUST return an empty string.
*/
public function getHeaderLine($name);
/**
* Return an instance with the provided value replacing the specified header.
*
* While header names are case-insensitive, the casing of the header will
* be preserved by this function, and returned from getHeaders().
*
* This method MUST be implemented in such a way as to retain the
* immutability of the message, and MUST return an instance that has the
* new and/or updated header and value.
*
* @param string $name Case-insensitive header field name.
* @param string|string[] $value Header value(s).
* @return static
* @throws \InvalidArgumentException for invalid header names or values.
*/
public function withHeader($name, $value);
/**
* Return an instance with the specified header appended with the given value.
*
* Existing values for the specified header will be maintained. The new
* value(s) will be appended to the existing list. If the header did not
* exist previously, it will be added.
*
* This method MUST be implemented in such a way as to retain the
* immutability of the message, and MUST return an instance that has the
* new header and/or value.
*
* @param string $name Case-insensitive header field name to add.
* @param string|string[] $value Header value(s).
* @return static
* @throws \InvalidArgumentException for invalid header names.
* @throws \InvalidArgumentException for invalid header values.
*/
public function withAddedHeader($name, $value);
/**
* Return an instance without the specified header.
*
* Header resolution MUST be done without case-sensitivity.
*
* This method MUST be implemented in such a way as to retain the
* immutability of the message, and MUST return an instance that removes
* the named header.
*
* @param string $name Case-insensitive header field name to remove.
* @return static
*/
public function withoutHeader($name);
/**
* Gets the body of the message.
*
* @return StreamInterface Returns the body as a stream.
*/
public function getBody();
/**
* Return an instance with the specified message body.
*
* The body MUST be a StreamInterface object.
*
* This method MUST be implemented in such a way as to retain the
* immutability of the message, and MUST return a new instance that has the
* new body stream.
*
* @param StreamInterface $body Body.
* @return static
* @throws \InvalidArgumentException When the body is not valid.
*/
public function withBody(StreamInterface $body);
}
3.2 Psr\Http\Message\RequestInterface
<?php
namespace Psr\Http\Message;
/**
* Representation of an outgoing, client-side request.
*
* Per the HTTP specification, this interface includes properties for
* each of the following:
*
* - Protocol version
* - HTTP method
* - URI
* - Headers
* - Message body
*
* During construction, implementations MUST attempt to set the Host header from
* a provided URI if no Host header is provided.
*
* Requests are considered immutable; all methods that might change state MUST
* be implemented such that they retain the internal state of the current
* message and return an instance that contains the changed state.
*/
interface RequestInterface extends MessageInterface
{
/**
* Retrieves the message's request target.
*
* Retrieves the message's request-target either as it will appear (for
* clients), as it appeared at request (for servers), or as it was
* specified for the instance (see withRequestTarget()).
*
* In most cases, this will be the origin-form of the composed URI,
* unless a value was provided to the concrete implementation (see
* withRequestTarget() below).
*
* If no URI is available, and no request-target has been specifically
* provided, this method MUST return the string "/".
*
* @return string
*/
public function getRequestTarget();
/**
* Return an instance with the specific request-target.
*
* If the request needs a non-origin-form request-target — e.g., for
* specifying an absolute-form, authority-form, or asterisk-form —
* this method may be used to create an instance with the specified
* request-target, verbatim.
*
* This method MUST be implemented in such a way as to retain the
* immutability of the message, and MUST return an instance that has the
* changed request target.
*
* @see http://tools.ietf.org/html/rfc7230#section-5.3 (for the various
* request-target forms allowed in request messages)
* @param mixed $requestTarget
* @return static
*/
public function withRequestTarget($requestTarget);
/**
* Retrieves the HTTP method of the request.
*
* @return string Returns the request method.
*/
public function getMethod();
/**
* Return an instance with the provided HTTP method.
*
* While HTTP method names are typically all uppercase characters, HTTP
* method names are case-sensitive and thus implementations SHOULD NOT
* modify the given string.
*
* This method MUST be implemented in such a way as to retain the
* immutability of the message, and MUST return an instance that has the
* changed request method.
*
* @param string $method Case-sensitive method.
* @return static
* @throws \InvalidArgumentException for invalid HTTP methods.
*/
public function withMethod($method);
/**
* Retrieves the URI instance.
*
* This method MUST return a UriInterface instance.
*
* @see http://tools.ietf.org/html/rfc3986#section-4.3
* @return UriInterface Returns a UriInterface instance
* representing the URI of the request.
*/
public function getUri();
/**
* Returns an instance with the provided URI.
*
* This method MUST update the Host header of the returned request by
* default if the URI contains a host component. If the URI does not
* contain a host component, any pre-existing Host header MUST be carried
* over to the returned request.
*
* You can opt-in to preserving the original state of the Host header by
* setting `$preserveHost` to `true`. When `$preserveHost` is set to
* `true`, this method interacts with the Host header in the following ways:
*
* - If the Host header is missing or empty, and the new URI contains
* a host component, this method MUST update the Host header in the returned
* request.
* - If the Host header is missing or empty, and the new URI does not contain a
* host component, this method MUST NOT update the Host header in the returned
* request.
* - If a Host header is present and non-empty, this method MUST NOT update
* the Host header in the returned request.
*
* This method MUST be implemented in such a way as to retain the
* immutability of the message, and MUST return an instance that has the
* new UriInterface instance.
*
* @see http://tools.ietf.org/html/rfc3986#section-4.3
* @param UriInterface $uri New request URI to use.
* @param bool $preserveHost Preserve the original state of the Host header.
* @return static
*/
public function withUri(UriInterface $uri, $preserveHost = false);
}
3.2.1 Psr\Http\Message\ServerRequestInterface
<?php
namespace Psr\Http\Message;
/**
* Representation of an incoming, server-side HTTP request.
*
* Per the HTTP specification, this interface includes properties for
* each of the following:
*
* - Protocol version
* - HTTP method
* - URI
* - Headers
* - Message body
*
* Additionally, it encapsulates all data as it has arrived at the
* application from the CGI and/or PHP environment, including:
*
* - The values represented in $_SERVER.
* - Any cookies provided (generally via $_COOKIE)
* - Query string arguments (generally via $_GET, or as parsed via parse_str())
* - Upload files, if any (as represented by $_FILES)
* - Deserialized body parameters (generally from $_POST)
*
* $_SERVER values MUST be treated as immutable, as they represent application
* state at the time of request; as such, no methods are provided to allow
* modification of those values. The other values provide such methods, as they
* can be restored from $_SERVER or the request body, and may need treatment
* during the application (e.g., body parameters may be deserialized based on
* content type).
*
* Additionally, this interface recognizes the utility of introspecting a
* request to derive and match additional parameters (e.g., via URI path
* matching, decrypting cookie values, deserializing non-form-encoded body
* content, matching authorization headers to users, etc). These parameters
* are stored in an "attributes" property.
*
* Requests are considered immutable; all methods that might change state MUST
* be implemented such that they retain the internal state of the current
* message and return an instance that contains the changed state.
*/
interface ServerRequestInterface extends RequestInterface
{
/**
* Retrieve server parameters.
*
* Retrieves data related to the incoming request environment,
* typically derived from PHP's $_SERVER superglobal. The data IS NOT
* REQUIRED to originate from $_SERVER.
*
* @return array
*/
public function getServerParams();
/**
* Retrieve cookies.
*
* Retrieves cookies sent by the client to the server.
*
* The data MUST be compatible with the structure of the $_COOKIE
* superglobal.
*
* @return array
*/
public function getCookieParams();
/**
* Return an instance with the specified cookies.
*
* The data IS NOT REQUIRED to come from the $_COOKIE superglobal, but MUST
* be compatible with the structure of $_COOKIE. Typically, this data will
* be injected at instantiation.
*
* This method MUST NOT update the related Cookie header of the request
* instance, nor related values in the server params.
*
* This method MUST be implemented in such a way as to retain the
* immutability of the message, and MUST return an instance that has the
* updated cookie values.
*
* @param array $cookies Array of key/value pairs representing cookies.
* @return static
*/
public function withCookieParams(array $cookies);
/**
* Retrieve query string arguments.
*
* Retrieves the deserialized query string arguments, if any.
*
* Note: the query params might not be in sync with the URI or server
* params. If you need to ensure you are only getting the original
* values, you may need to parse the query string from `getUri()->getQuery()`
* or from the `QUERY_STRING` server param.
*
* @return array
*/
public function getQueryParams();
/**
* Return an instance with the specified query string arguments.
*
* These values SHOULD remain immutable over the course of the incoming
* request. They MAY be injected during instantiation, such as from PHP's
* $_GET superglobal, or MAY be derived from some other value such as the
* URI. In cases where the arguments are parsed from the URI, the data
* MUST be compatible with what PHP's parse_str() would return for
* purposes of how duplicate query parameters are handled, and how nested
* sets are handled.
*
* Setting query string arguments MUST NOT change the URI stored by the
* request, nor the values in the server params.
*
* This method MUST be implemented in such a way as to retain the
* immutability of the message, and MUST return an instance that has the
* updated query string arguments.
*
* @param array $query Array of query string arguments, typically from
* $_GET.
* @return static
*/
public function withQueryParams(array $query);
/**
* Retrieve normalized file upload data.
*
* This method returns upload metadata in a normalized tree, with each leaf
* an instance of Psr\Http\Message\UploadedFileInterface.
*
* These values MAY be prepared from $_FILES or the message body during
* instantiation, or MAY be injected via withUploadedFiles().
*
* @return array An array tree of UploadedFileInterface instances; an empty
* array MUST be returned if no data is present.
*/
public function getUploadedFiles();
/**
* Create a new instance with the specified uploaded files.
*
* This method MUST be implemented in such a way as to retain the
* immutability of the message, and MUST return an instance that has the
* updated body parameters.
*
* @param array $uploadedFiles An array tree of UploadedFileInterface instances.
* @return static
* @throws \InvalidArgumentException if an invalid structure is provided.
*/
public function withUploadedFiles(array $uploadedFiles);
/**
* Retrieve any parameters provided in the request body.
*
* If the request Content-Type is either application/x-www-form-urlencoded
* or multipart/form-data, and the request method is POST, this method MUST
* return the contents of $_POST.
*
* Otherwise, this method may return any results of deserializing
* the request body content; as parsing returns structured content, the
* potential types MUST be arrays or objects only. A null value indicates
* the absence of body content.
*
* @return null|array|object The deserialized body parameters, if any.
* These will typically be an array or object.
*/
public function getParsedBody();
/**
* Return an instance with the specified body parameters.
*
* These MAY be injected during instantiation.
*
* If the request Content-Type is either application/x-www-form-urlencoded
* or multipart/form-data, and the request method is POST, use this method
* ONLY to inject the contents of $_POST.
*
* The data IS NOT REQUIRED to come from $_POST, but MUST be the results of
* deserializing the request body content. Deserialization/parsing returns
* structured data, and, as such, this method ONLY accepts arrays or objects,
* or a null value if nothing was available to parse.
*
* As an example, if content negotiation determines that the request data
* is a JSON payload, this method could be used to create a request
* instance with the deserialized parameters.
*
* This method MUST be implemented in such a way as to retain the
* immutability of the message, and MUST return an instance that has the
* updated body parameters.
*
* @param null|array|object $data The deserialized body data. This will
* typically be in an array or object.
* @return static
* @throws \InvalidArgumentException if an unsupported argument type is
* provided.
*/
public function withParsedBody($data);
/**
* Retrieve attributes derived from the request.
*
* The request "attributes" may be used to allow injection of any
* parameters derived from the request: e.g., the results of path
* match operations; the results of decrypting cookies; the results of
* deserializing non-form-encoded message bodies; etc. Attributes
* will be application and request specific, and CAN be mutable.
*
* @return mixed[] Attributes derived from the request.
*/
public function getAttributes();
/**
* Retrieve a single derived request attribute.
*
* Retrieves a single derived request attribute as described in
* getAttributes(). If the attribute has not been previously set, returns
* the default value as provided.
*
* This method obviates the need for a hasAttribute() method, as it allows
* specifying a default value to return if the attribute is not found.
*
* @see getAttributes()
* @param string $name The attribute name.
* @param mixed $default Default value to return if the attribute does not exist.
* @return mixed
*/
public function getAttribute($name, $default = null);
/**
* Return an instance with the specified derived request attribute.
*
* This method allows setting a single derived request attribute as
* described in getAttributes().
*
* This method MUST be implemented in such a way as to retain the
* immutability of the message, and MUST return an instance that has the
* updated attribute.
*
* @see getAttributes()
* @param string $name The attribute name.
* @param mixed $value The value of the attribute.
* @return static
*/
public function withAttribute($name, $value);
/**
* Return an instance that removes the specified derived request attribute.
*
* This method allows removing a single derived request attribute as
* described in getAttributes().
*
* This method MUST be implemented in such a way as to retain the
* immutability of the message, and MUST return an instance that removes
* the attribute.
*
* @see getAttributes()
* @param string $name The attribute name.
* @return static
*/
public function withoutAttribute($name);
}
3.3 Psr\Http\Message\ResponseInterface
<?php
namespace Psr\Http\Message;
/**
* Representation of an outgoing, server-side response.
*
* Per the HTTP specification, this interface includes properties for
* each of the following:
*
* - Protocol version
* - Status code and reason phrase
* - Headers
* - Message body
*
* Responses are considered immutable; all methods that might change state MUST
* be implemented such that they retain the internal state of the current
* message and return an instance that contains the changed state.
*/
interface ResponseInterface extends MessageInterface
{
/**
* Gets the response status code.
*
* The status code is a 3-digit integer result code of the server's attempt
* to understand and satisfy the request.
*
* @return int Status code.
*/
public function getStatusCode();
/**
* Return an instance with the specified status code and, optionally, reason phrase.
*
* If no reason phrase is specified, implementations MAY choose to default
* to the RFC 7231 or IANA recommended reason phrase for the response's
* status code.
*
* This method MUST be implemented in such a way as to retain the
* immutability of the message, and MUST return an instance that has the
* updated status and reason phrase.
*
* @see http://tools.ietf.org/html/rfc7231#section-6
* @see http://www.iana.org/assignments/http-status-codes/http-status-codes.xhtml
* @param int $code The 3-digit integer result code to set.
* @param string $reasonPhrase The reason phrase to use with the
* provided status code; if none is provided, implementations MAY
* use the defaults as suggested in the HTTP specification.
* @return static
* @throws \InvalidArgumentException For invalid status code arguments.
*/
public function withStatus($code, $reasonPhrase = '');
/**
* Gets the response reason phrase associated with the status code.
*
* Because a reason phrase is not a required element in a response
* status line, the reason phrase value MAY be empty. Implementations MAY
* choose to return the default RFC 7231 recommended reason phrase (or those
* listed in the IANA HTTP Status Code Registry) for the response's
* status code.
*
* @see http://tools.ietf.org/html/rfc7231#section-6
* @see http://www.iana.org/assignments/http-status-codes/http-status-codes.xhtml
* @return string Reason phrase; must return an empty string if none present.
*/
public function getReasonPhrase();
}
3.4 Psr\Http\Message\StreamInterface
<?php
namespace Psr\Http\Message;
/**
* Describes a data stream.
*
* Typically, an instance will wrap a PHP stream; this interface provides
* a wrapper around the most common operations, including serialization of
* the entire stream to a string.
*/
interface StreamInterface
{
/**
* Reads all data from the stream into a string, from the beginning to end.
*
* This method MUST attempt to seek to the beginning of the stream before
* reading data and read the stream until the end is reached.
*
* Warning: This could attempt to load a large amount of data into memory.
*
* This method MUST NOT raise an exception in order to conform with PHP's
* string casting operations.
*
* @see http://php.net/manual/en/language.oop5.magic.php#object.tostring
* @return string
*/
public function __toString();
/**
* Closes the stream and any underlying resources.
*
* @return void
*/
public function close();
/**
* Separates any underlying resources from the stream.
*
* After the stream has been detached, the stream is in an unusable state.
*
* @return resource|null Underlying PHP stream, if any
*/
public function detach();
/**
* Get the size of the stream if known.
*
* @return int|null Returns the size in bytes if known, or null if unknown.
*/
public function getSize();
/**
* Returns the current position of the file read/write pointer
*
* @return int Position of the file pointer
* @throws \RuntimeException on error.
*/
public function tell();
/**
* Returns true if the stream is at the end of the stream.
*
* @return bool
*/
public function eof();
/**
* Returns whether or not the stream is seekable.
*
* @return bool
*/
public function isSeekable();
/**
* Seek to a position in the stream.
*
* @see http://www.php.net/manual/en/function.fseek.php
* @param int $offset Stream offset
* @param int $whence Specifies how the cursor position will be calculated
* based on the seek offset. Valid values are identical to the built-in
* PHP $whence values for `fseek()`. SEEK_SET: Set position equal to
* offset bytes SEEK_CUR: Set position to current location plus offset
* SEEK_END: Set position to end-of-stream plus offset.
* @throws \RuntimeException on failure.
*/
public function seek($offset, $whence = SEEK_SET);
/**
* Seek to the beginning of the stream.
*
* If the stream is not seekable, this method will raise an exception;
* otherwise, it will perform a seek(0).
*
* @see seek()
* @see http://www.php.net/manual/en/function.fseek.php
* @throws \RuntimeException on failure.
*/
public function rewind();
/**
* Returns whether or not the stream is writable.
*
* @return bool
*/
public function isWritable();
/**
* Write data to the stream.
*
* @param string $string The string that is to be written.
* @return int Returns the number of bytes written to the stream.
* @throws \RuntimeException on failure.
*/
public function write($string);
/**
* Returns whether or not the stream is readable.
*
* @return bool
*/
public function isReadable();
/**
* Read data from the stream.
*
* @param int $length Read up to $length bytes from the object and return
* them. Fewer than $length bytes may be returned if underlying stream
* call returns fewer bytes.
* @return string Returns the data read from the stream, or an empty string
* if no bytes are available.
* @throws \RuntimeException if an error occurs.
*/
public function read($length);
/**
* Returns the remaining contents in a string
*
* @return string
* @throws \RuntimeException if unable to read.
* @throws \RuntimeException if error occurs while reading.
*/
public function getContents();
/**
* Get stream metadata as an associative array or retrieve a specific key.
*
* The keys returned are identical to the keys returned from PHP's
* stream_get_meta_data() function.
*
* @see http://php.net/manual/en/function.stream-get-meta-data.php
* @param string $key Specific metadata to retrieve.
* @return array|mixed|null Returns an associative array if no key is
* provided. Returns a specific key value if a key is provided and the
* value is found, or null if the key is not found.
*/
public function getMetadata($key = null);
}
<?php
namespace Psr\Http\Message;
/**
* Value object representing a URI.
*
* This interface is meant to represent URIs according to RFC 3986 and to
* provide methods for most common operations. Additional functionality for
* working with URIs can be provided on top of the interface or externally.
* Its primary use is for HTTP requests, but may also be used in other
* contexts.
*
* Instances of this interface are considered immutable; all methods that
* might change state MUST be implemented such that they retain the internal
* state of the current instance and return an instance that contains the
* changed state.
*
* Typically the Host header will also be present in the request message.
* For server-side requests, the scheme will typically be discoverable in the
* server parameters.
*
* @see http://tools.ietf.org/html/rfc3986 (the URI specification)
*/
interface UriInterface
{
/**
* Retrieve the scheme component of the URI.
*
* If no scheme is present, this method MUST return an empty string.
*
* The value returned MUST be normalized to lowercase, per RFC 3986
* Section 3.1.
*
* The trailing ":" character is not part of the scheme and MUST NOT be
* added.
*
* @see https://tools.ietf.org/html/rfc3986#section-3.1
* @return string The URI scheme.
*/
public function getScheme();
/**
* Retrieve the authority component of the URI.
*
* If no authority information is present, this method MUST return an empty
* string.
*
* The authority syntax of the URI is:
*
* <pre>
* [user-info@]host[:port]
* </pre>
*
* If the port component is not set or is the standard port for the current
* scheme, it SHOULD NOT be included.
*
* @see https://tools.ietf.org/html/rfc3986#section-3.2
* @return string The URI authority, in "[user-info@]host[:port]" format.
*/
public function getAuthority();
/**
* Retrieve the user information component of the URI.
*
* If no user information is present, this method MUST return an empty
* string.
*
* If a user is present in the URI, this will return that value;
* additionally, if the password is also present, it will be appended to the
* user value, with a colon (":") separating the values.
*
* The trailing "@" character is not part of the user information and MUST
* NOT be added.
*
* @return string The URI user information, in "username[:password]" format.
*/
public function getUserInfo();
/**
* Retrieve the host component of the URI.
*
* If no host is present, this method MUST return an empty string.
*
* The value returned MUST be normalized to lowercase, per RFC 3986
* Section 3.2.2.
*
* @see http://tools.ietf.org/html/rfc3986#section-3.2.2
* @return string The URI host.
*/
public function getHost();
/**
* Retrieve the port component of the URI.
*
* If a port is present, and it is non-standard for the current scheme,
* this method MUST return it as an integer. If the port is the standard port
* used with the current scheme, this method SHOULD return null.
*
* If no port is present, and no scheme is present, this method MUST return
* a null value.
*
* If no port is present, but a scheme is present, this method MAY return
* the standard port for that scheme, but SHOULD return null.
*
* @return null|int The URI port.
*/
public function getPort();
/**
* Retrieve the path component of the URI.
*
* The path can either be empty or absolute (starting with a slash) or
* rootless (not starting with a slash). Implementations MUST support all
* three syntaxes.
*
* Normally, the empty path "" and absolute path "/" are considered equal as
* defined in RFC 7230 Section 2.7.3. But this method MUST NOT automatically
* do this normalization because in contexts with a trimmed base path, e.g.
* the front controller, this difference becomes significant. It's the task
* of the user to handle both "" and "/".
*
* The value returned MUST be percent-encoded, but MUST NOT double-encode
* any characters. To determine what characters to encode, please refer to
* RFC 3986, Sections 2 and 3.3.
*
* As an example, if the value should include a slash ("/") not intended as
* delimiter between path segments, that value MUST be passed in encoded
* form (e.g., "%2F") to the instance.
*
* @see https://tools.ietf.org/html/rfc3986#section-2
* @see https://tools.ietf.org/html/rfc3986#section-3.3
* @return string The URI path.
*/
public function getPath();
/**
* Retrieve the query string of the URI.
*
* If no query string is present, this method MUST return an empty string.
*
* The leading "?" character is not part of the query and MUST NOT be
* added.
*
* The value returned MUST be percent-encoded, but MUST NOT double-encode
* any characters. To determine what characters to encode, please refer to
* RFC 3986, Sections 2 and 3.4.
*
* As an example, if a value in a key/value pair of the query string should
* include an ampersand ("&") not intended as a delimiter between values,
* that value MUST be passed in encoded form (e.g., "%26") to the instance.
*
* @see https://tools.ietf.org/html/rfc3986#section-2
* @see https://tools.ietf.org/html/rfc3986#section-3.4
* @return string The URI query string.
*/
public function getQuery();
/**
* Retrieve the fragment component of the URI.
*
* If no fragment is present, this method MUST return an empty string.
*
* The leading "#" character is not part of the fragment and MUST NOT be
* added.
*
* The value returned MUST be percent-encoded, but MUST NOT double-encode
* any characters. To determine what characters to encode, please refer to
* RFC 3986, Sections 2 and 3.5.
*
* @see https://tools.ietf.org/html/rfc3986#section-2
* @see https://tools.ietf.org/html/rfc3986#section-3.5
* @return string The URI fragment.
*/
public function getFragment();
/**
* Return an instance with the specified scheme.
*
* This method MUST retain the state of the current instance, and return
* an instance that contains the specified scheme.
*
* Implementations MUST support the schemes "http" and "https" case
* insensitively, and MAY accommodate other schemes if required.
*
* An empty scheme is equivalent to removing the scheme.
*
* @param string $scheme The scheme to use with the new instance.
* @return static A new instance with the specified scheme.
* @throws \InvalidArgumentException for invalid schemes.
* @throws \InvalidArgumentException for unsupported schemes.
*/
public function withScheme($scheme);
/**
* Return an instance with the specified user information.
*
* This method MUST retain the state of the current instance, and return
* an instance that contains the specified user information.
*
* Password is optional, but the user information MUST include the
* user; an empty string for the user is equivalent to removing user
* information.
*
* @param string $user The user name to use for authority.
* @param null|string $password The password associated with $user.
* @return static A new instance with the specified user information.
*/
public function withUserInfo($user, $password = null);
/**
* Return an instance with the specified host.
*
* This method MUST retain the state of the current instance, and return
* an instance that contains the specified host.
*
* An empty host value is equivalent to removing the host.
*
* @param string $host The hostname to use with the new instance.
* @return static A new instance with the specified host.
* @throws \InvalidArgumentException for invalid hostnames.
*/
public function withHost($host);
/**
* Return an instance with the specified port.
*
* This method MUST retain the state of the current instance, and return
* an instance that contains the specified port.
*
* Implementations MUST raise an exception for ports outside the
* established TCP and UDP port ranges.
*
* A null value provided for the port is equivalent to removing the port
* information.
*
* @param null|int $port The port to use with the new instance; a null value
* removes the port information.
* @return static A new instance with the specified port.
* @throws \InvalidArgumentException for invalid ports.
*/
public function withPort($port);
/**
* Return an instance with the specified path.
*
* This method MUST retain the state of the current instance, and return
* an instance that contains the specified path.
*
* The path can either be empty or absolute (starting with a slash) or
* rootless (not starting with a slash). Implementations MUST support all
* three syntaxes.
*
* If an HTTP path is intended to be host-relative rather than path-relative
* then it must begin with a slash ("/"). HTTP paths not starting with a slash
* are assumed to be relative to some base path known to the application or
* consumer.
*
* Users can provide both encoded and decoded path characters.
* Implementations ensure the correct encoding as outlined in getPath().
*
* @param string $path The path to use with the new instance.
* @return static A new instance with the specified path.
* @throws \InvalidArgumentException for invalid paths.
*/
public function withPath($path);
/**
* Return an instance with the specified query string.
*
* This method MUST retain the state of the current instance, and return
* an instance that contains the specified query string.
*
* Users can provide both encoded and decoded query characters.
* Implementations ensure the correct encoding as outlined in getQuery().
*
* An empty query string value is equivalent to removing the query string.
*
* @param string $query The query string to use with the new instance.
* @return static A new instance with the specified query string.
* @throws \InvalidArgumentException for invalid query strings.
*/
public function withQuery($query);
/**
* Return an instance with the specified URI fragment.
*
* This method MUST retain the state of the current instance, and return
* an instance that contains the specified URI fragment.
*
* Users can provide both encoded and decoded fragment characters.
* Implementations ensure the correct encoding as outlined in getFragment().
*
* An empty fragment value is equivalent to removing the fragment.
*
* @param string $fragment The fragment to use with the new instance.
* @return static A new instance with the specified fragment.
*/
public function withFragment($fragment);
/**
* Return the string representation as a URI reference.
*
* Depending on which components of the URI are present, the resulting
* string is either a full URI or relative reference according to RFC 3986,
* Section 4.1. The method concatenates the various components of the URI,
* using the appropriate delimiters:
*
* - If a scheme is present, it MUST be suffixed by ":".
* - If an authority is present, it MUST be prefixed by "//".
* - The path can be concatenated without delimiters. But there are two
* cases where the path has to be adjusted to make the URI reference
* valid as PHP does not allow to throw an exception in __toString():
* - If the path is rootless and an authority is present, the path MUST
* be prefixed by "/".
* - If the path is starting with more than one "/" and no authority is
* present, the starting slashes MUST be reduced to one.
* - If a query is present, it MUST be prefixed by "?".
* - If a fragment is present, it MUST be prefixed by "#".
*
* @see http://tools.ietf.org/html/rfc3986#section-4.1
* @return string
*/
public function __toString();
}
<?php
namespace Psr\Http\Message;
/**
* Value object representing a file uploaded through an HTTP request.
*
* Instances of this interface are considered immutable; all methods that
* might change state MUST be implemented such that they retain the internal
* state of the current instance and return an instance that contains the
* changed state.
*/
interface UploadedFileInterface
{
/**
* Retrieve a stream representing the uploaded file.
*
* This method MUST return a StreamInterface instance, representing the
* uploaded file. The purpose of this method is to allow utilizing native PHP
* stream functionality to manipulate the file upload, such as
* stream_copy_to_stream() (though the result will need to be decorated in a
* native PHP stream wrapper to work with such functions).
*
* If the moveTo() method has been called previously, this method MUST raise
* an exception.
*
* @return StreamInterface Stream representation of the uploaded file.
* @throws \RuntimeException in cases when no stream is available.
* @throws \RuntimeException in cases when no stream can be created.
*/
public function getStream();
/**
* Move the uploaded file to a new location.
*
* Use this method as an alternative to move_uploaded_file(). This method is
* guaranteed to work in both SAPI and non-SAPI environments.
* Implementations must determine which environment they are in, and use the
* appropriate method (move_uploaded_file(), rename(), or a stream
* operation) to perform the operation.
*
* $targetPath may be an absolute path, or a relative path. If it is a
* relative path, resolution should be the same as used by PHP's rename()
* function.
*
* The original file or stream MUST be removed on completion.
*
* If this method is called more than once, any subsequent calls MUST raise
* an exception.
*
* When used in an SAPI environment where $_FILES is populated, when writing
* files via moveTo(), is_uploaded_file() and move_uploaded_file() SHOULD be
* used to ensure permissions and upload status are verified correctly.
*
* If you wish to move to a stream, use getStream(), as SAPI operations
* cannot guarantee writing to stream destinations.
*
* @see http://php.net/is_uploaded_file
* @see http://php.net/move_uploaded_file
* @param string $targetPath Path to which to move the uploaded file.
* @throws \InvalidArgumentException if the $targetPath specified is invalid.
* @throws \RuntimeException on any error during the move operation.
* @throws \RuntimeException on the second or subsequent call to the method.
*/
public function moveTo($targetPath);
/**
* Retrieve the file size.
*
* Implementations SHOULD return the value stored in the "size" key of
* the file in the $_FILES array if available, as PHP calculates this based
* on the actual size transmitted.
*
* @return int|null The file size in bytes or null if unknown.
*/
public function getSize();
/**
* Retrieve the error associated with the uploaded file.
*
* The return value MUST be one of PHP's UPLOAD_ERR_XXX constants.
*
* If the file was uploaded successfully, this method MUST return
* UPLOAD_ERR_OK.
*
* Implementations SHOULD return the value stored in the "error" key of
* the file in the $_FILES array.
*
* @see http://php.net/manual/en/features.file-upload.errors.php
* @return int One of PHP's UPLOAD_ERR_XXX constants.
*/
public function getError();
/**
* Retrieve the filename sent by the client.
*
* Do not trust the value returned by this method. A client could send
* a malicious filename with the intention to corrupt or hack your
* application.
*
* Implementations SHOULD return the value stored in the "name" key of
* the file in the $_FILES array.
*
* @return string|null The filename sent by the client or null if none
* was provided.
*/
public function getClientFilename();
/**
* Retrieve the media type sent by the client.
*
* Do not trust the value returned by this method. A client could send
* a malicious media type with the intention to corrupt or hack your
* application.
*
* Implementations SHOULD return the value stored in the "type" key of
* the file in the $_FILES array.
*
* @return string|null The media type sent by the client or null if none
* was provided.
*/
public function getClientMediaType();
}