MessagePart
extends ErrorBag
in package
implements
IMessagePart
Most basic representation of a single part of an email.
Tags
Interfaces, Classes, Traits and Enums
- IMessagePart
- An interface representing a single part of an email.
Table of Contents
- $charsetOverride : string|null
- $ignoreTransferEncoding : bool
- $logger : LoggerInterface
- $observers : SplObjectStorage
- $parent : IMimePart|null
- $partStreamContainer : PartStreamContainer
- $errors : array<string|int, mixed>
- $validated : bool
- __construct() : mixed
- __toString() : string
- Returns the message/part as a string, containing its headers, content and children.
- addError() : static
- Creates and adds an Error object to this ErrorBag.
- attach() : void
- attachContentStream() : static
- Attaches the stream or resource handle for the part's content. The stream is closed when another stream is attached, or the MimePart is destroyed.
- detach() : void
- detachContentStream() : static
- Detaches the content stream.
- getAllErrors() : array<string|int, Error>
- Returns any errors on this object, and all IErrorBag children of this object at or above the passed PSR log level from Psr\Log\LogLevel (defaulting to LogLevel::ERROR).
- getBinaryContentResourceHandle() : resource|null
- Returns a resource handle for the content's raw data stream, or null if the part doesn't have a content stream.
- getBinaryContentStream() : StreamInterface|null
- Returns the raw data stream for the current part, if it exists, or null if there's no content associated with the stream.
- getContent() : string|null
- Shortcut to reading stream content and assigning it to a string. Returns null if the part doesn't have a content stream.
- getContentStream() : StreamInterface|null
- Returns the StreamInterface for the part's content or null if the part doesn't have a content section.
- getErrorLoggingContextName() : string
- Returns the class name. Override to identify objects in logs.
- getErrors() : array<string|int, Error>
- Returns any local errors this object has at or above the passed PSR log level in Psr\Log\LogLevel (defaulting to LogLevel::ERROR).
- getFilename() : string|null
- Returns a filename for the part if one is defined, or null otherwise.
- getParent() : IMimePart|null
- Returns this part's parent.
- getResourceHandle() : resource
- Returns a resource handle for the string representation of this part, containing its headers, content and children. For an IMessage, this would be the entire RFC822 (or greater) email.
- getStream() : StreamInterface
- Returns a Psr7 StreamInterface for the string representation of this part, containing its headers, content and children.
- hasAnyErrors() : bool
- Returns true if there are errors on this object, or any IErrorBag child of this object at or above the passed PSR log level in Psr\Log\LogLevel (defaulting to LogLevel::ERROR). Note that this will stop after finding the first error and return, so may be slightly more performant if an error actually exists over calling getAllErrors if only interested in whether an error exists.
- hasContent() : bool
- Returns true if the part contains a 'body' (content).
- hasErrors() : bool
- Returns true if this object has an error in its error bag at or above the passed $minPsrLevel (defaults to ERROR). If $validate is true, additional validation may be performed.
- notify() : void
- save() : static
- Writes a string representation of this part, including its headers, content and children to the passed file, resource, or stream.
- saveContent() : static
- Saves the binary content of the stream to the passed file, resource or stream.
- setCharsetOverride() : static
- Overrides the default character set used for reading content from content streams in cases where a user knows the source charset is not what is specified.
- setContent() : static
- Sets the content of the part to the passed string, resource, or stream.
- getErrorBagChildren() : array<string|int, IErrorBag>
- Return any children ErrorBag objects.
- validate() : void
- Perform any extra validation and call 'addError'.
Properties
$charsetOverride
protected
string|null
$charsetOverride
= null
can be used to set an override for content's charset in cases where a user knows the charset on the content is not what it claims to be.
$ignoreTransferEncoding
protected
bool
$ignoreTransferEncoding
= false
set to true when a user attaches a stream manually, it's assumed to already be decoded or to have relevant transfer encoding decorators attached already.
$logger
protected
LoggerInterface
$logger
$observers
protected
SplObjectStorage
$observers
attached observers that need to be notified of modifications to this part.
$parent
protected
IMimePart|null
$parent
parent part
$partStreamContainer
protected
PartStreamContainer
$partStreamContainer
holds 'stream' and 'content stream'.
$errors
private
array<string|int, mixed>
$errors
= []
array of Error objects belonging to this object.
$validated
private
bool
$validated
= false
true once the object has been validated.
Methods
__construct()
public
__construct(LoggerInterface $logger, PartStreamContainer $streamContainer[, IMimePart|null $parent = null ]) : mixed
Parameters
- $logger : LoggerInterface
- $streamContainer : PartStreamContainer
- $parent : IMimePart|null = null
Return values
mixed —__toString()
Returns the message/part as a string, containing its headers, content and children.
public
__toString() : string
Convenience method for calling getContents() on IMessagePart::getStream().
Return values
string —addError()
Creates and adds an Error object to this ErrorBag.
public
addError(string $message, string $psrLogLevel[, Throwable|null $exception = null ]) : static
Parameters
- $message : string
- $psrLogLevel : string
- $exception : Throwable|null = null
Return values
static —attach()
public
attach(SplObserver $observer) : void
Parameters
- $observer : SplObserver
Return values
void —attachContentStream()
Attaches the stream or resource handle for the part's content. The stream is closed when another stream is attached, or the MimePart is destroyed.
public
attachContentStream(StreamInterface $stream[, string $streamCharset = MailMimeParser::DEFAULT_CHARSET ]) : static
Parameters
- $stream : StreamInterface
-
the content
- $streamCharset : string = MailMimeParser::DEFAULT_CHARSET
-
the charset of $stream
Return values
static —detach()
public
detach(SplObserver $observer) : void
Parameters
- $observer : SplObserver
Return values
void —detachContentStream()
Detaches the content stream.
public
detachContentStream() : static
Return values
static —getAllErrors()
Returns any errors on this object, and all IErrorBag children of this object at or above the passed PSR log level from Psr\Log\LogLevel (defaulting to LogLevel::ERROR).
public
getAllErrors([bool $validate = false ][, string $minPsrLevel = LogLevel::ERROR ]) : array<string|int, Error>
Care should be taken using this if the intention is to only 'preview' a message without parsing it entirely, since this will cause the whole message to be parsed as it traverses children, and could be slow on messages with large attachments, etc...
If $validate is true, additional validation may be performed on children to check for errors.
Parameters
- $validate : bool = false
- $minPsrLevel : string = LogLevel::ERROR
Return values
array<string|int, Error> —getBinaryContentResourceHandle()
Returns a resource handle for the content's raw data stream, or null if the part doesn't have a content stream.
public
getBinaryContentResourceHandle() : resource|null
The method wraps a call to IMessagePart::getBinaryContentStream() and returns a resource handle for the returned Stream.
Return values
resource|null —the resource
getBinaryContentStream()
Returns the raw data stream for the current part, if it exists, or null if there's no content associated with the stream.
public
getBinaryContentStream() : StreamInterface|null
This is basically the same as calling IMessagePart::getContentStream(), except no automatic charset conversion is done. Note that for non-text streams, this doesn't have an effect, as charset conversion is not performed in that case, and is useful only when:
- The charset defined is not correct, and the conversion produces errors; or
- You'd like to read the raw contents without conversion, for instance to save it to file or allow a user to download it as-is (in a download link for example).
Return values
StreamInterface|null —the stream
getContent()
Shortcut to reading stream content and assigning it to a string. Returns null if the part doesn't have a content stream.
public
getContent([string $charset = MailMimeParser::DEFAULT_CHARSET ]) : string|null
The returned string is encoded to the passed $charset character encoding.
Parameters
- $charset : string = MailMimeParser::DEFAULT_CHARSET
-
the target charset for the returned string
Return values
string|null —the content
getContentStream()
Returns the StreamInterface for the part's content or null if the part doesn't have a content section.
public
getContentStream([string $charset = MailMimeParser::DEFAULT_CHARSET ]) : StreamInterface|null
To get a stream without charset conversion if you know the part's content contains a binary stream, call self::getBinaryContentStream() instead.
The library automatically handles decoding and charset conversion (to the target passed $charset) based on the part's transfer encoding as returned by IMessagePart::getContentTransferEncoding() and the part's charset as returned by IMessagePart::getCharset(). The returned stream is ready to be read from directly.
Note that the returned Stream is a shared object. If called multiple times with the same $charset, and the value of the part's Content-Transfer-Encoding header has not changed, the stream will be rewound. This would affect other existing variables referencing the stream, for example:
// assuming $part is a part containing the following
// string for its content: '12345678'
$stream = $part->getContentStream();
$someChars = $part->read(4);
$stream2 = $part->getContentStream();
$moreChars = $part->read(4);
echo ($someChars === $moreChars); //1
In this case the Stream was rewound, and $stream's second call to read 4 bytes reads the same first 4.
Parameters
- $charset : string = MailMimeParser::DEFAULT_CHARSET
-
Optional charset for the returned stream.
Return values
StreamInterface|null —the stream
getErrorLoggingContextName()
Returns the class name. Override to identify objects in logs.
public
getErrorLoggingContextName() : string
Return values
string —getErrors()
Returns any local errors this object has at or above the passed PSR log level in Psr\Log\LogLevel (defaulting to LogLevel::ERROR).
public
getErrors([bool $validate = false ][, string $minPsrLevel = LogLevel::ERROR ]) : array<string|int, Error>
If $validate is true, additional validation may be performed on the object to check for errors.
Parameters
- $validate : bool = false
- $minPsrLevel : string = LogLevel::ERROR
Return values
array<string|int, Error> —getFilename()
Returns a filename for the part if one is defined, or null otherwise.
public
getFilename() : string|null
Return values
string|null —the file name
getParent()
Returns this part's parent.
public
getParent() : IMimePart|null
Return values
IMimePart|null —getResourceHandle()
Returns a resource handle for the string representation of this part, containing its headers, content and children. For an IMessage, this would be the entire RFC822 (or greater) email.
public
getResourceHandle() : resource
If the part has not been modified and represents a parsed part, the original stream should be returned. Otherwise a stream representation of the part including its modifications should be returned. This insures that an unmodified, signed message could be passed on that way even after parsing and reading.
The returned stream is not guaranteed to be RFC822 (or greater) compliant for the following reasons:
- The original email or part, if not modified, is returned as-is and may not be compliant.
- Although certain parts may have been modified, an original unmodified header from the original email or part may not be compliant.
- A user may set headers in a non-compliant format.
Return values
resource —the resource handle containing the part.
getStream()
Returns a Psr7 StreamInterface for the string representation of this part, containing its headers, content and children.
public
getStream() : StreamInterface
If the part has not been modified and represents a parsed part, the original stream should be returned. Otherwise a stream representation of the part including its modifications should be returned. This insures that an unmodified, signed message could be passed on that way even after parsing and reading.
The returned stream is not guaranteed to be RFC822 (or greater) compliant for the following reasons:
- The original email or part, if not modified, is returned as-is and may not be compliant.
- Although certain parts may have been modified, an original unmodified header from the original email or part may not be compliant.
- A user may set headers in a non-compliant format.
Return values
StreamInterface —the stream containing the part.
hasAnyErrors()
Returns true if there are errors on this object, or any IErrorBag child of this object at or above the passed PSR log level in Psr\Log\LogLevel (defaulting to LogLevel::ERROR). Note that this will stop after finding the first error and return, so may be slightly more performant if an error actually exists over calling getAllErrors if only interested in whether an error exists.
public
hasAnyErrors([bool $validate = false ][, string $minPsrLevel = LogLevel::ERROR ]) : bool
Care should be taken using this if the intention is to only 'preview' a message without parsing it entirely, since this will cause the whole message to be parsed as it traverses children, and could be slow on messages with large attachments, etc...
If $validate is true, additional validation may be performed to check for errors.
Parameters
- $validate : bool = false
- $minPsrLevel : string = LogLevel::ERROR
Return values
bool —hasContent()
Returns true if the part contains a 'body' (content).
public
hasContent() : bool
Return values
bool —hasErrors()
Returns true if this object has an error in its error bag at or above the passed $minPsrLevel (defaults to ERROR). If $validate is true, additional validation may be performed.
public
hasErrors([bool $validate = false ][, string $minPsrLevel = LogLevel::ERROR ]) : bool
The PSR levels are defined in Psr\Log\LogLevel.
Parameters
- $validate : bool = false
- $minPsrLevel : string = LogLevel::ERROR
Return values
bool —notify()
public
notify() : void
Return values
void —save()
Writes a string representation of this part, including its headers, content and children to the passed file, resource, or stream.
public
save(mixed $filenameResourceOrStream[, string $filemode = 'w+' ]) : static
If the part has not been modified and represents a parsed part, the original stream should be written to the file. Otherwise a stream representation of the part including its modifications should be written. This insures that an unmodified, signed message could be passed on this way even after parsing and reading.
The written stream is not guaranteed to be RFC822 (or greater) compliant for the following reasons:
- The original email or part, if not modified, is returned as-is and may not be compliant.
- Although certain parts may have been modified, an original unmodified header from the original email or part may not be compliant.
- A user may set headers in a non-compliant format.
If the passed $filenameResourceOrStream is a string, it's assumed to be a filename to write to.
When passing a resource or Psr7 Stream, the resource is not closed, nor rewound after being written to.
Parameters
- $filenameResourceOrStream : mixed
-
the file, resource, or stream to write to.
- $filemode : string = 'w+'
-
Optional filemode to open a file in (if $filenameResourceOrStream is a string)
Return values
static —saveContent()
Saves the binary content of the stream to the passed file, resource or stream.
public
saveContent(mixed $filenameResourceOrStream) : static
Note that charset conversion is not performed in this case, and the contents of the part are saved in their binary format as transmitted (but after any content-transfer decoding is performed). IMessagePart::getBinaryContentStream() for a more detailed description of the stream.
If the passed parameter is a string, it's assumed to be a filename to write to. The file is opened in 'w+' mode, and closed before returning.
When passing a resource or Psr7 Stream, the resource is not closed, nor rewound.
Parameters
- $filenameResourceOrStream : mixed
Return values
static —setCharsetOverride()
Overrides the default character set used for reading content from content streams in cases where a user knows the source charset is not what is specified.
public
setCharsetOverride(string $charsetOverride[, bool $onlyIfNoCharset = false ]) : static
If set, the returned value from IMessagePart::getCharset() must be ignored during subsequent read operations and streams created out of this part's content.
Note that setting an override on an IMessage and calling getTextStream, getTextContent, getHtmlStream or getHtmlContent will not be applied to those sub-parts, unless the text/html part is the IMessage itself. Instead, IMessage::getTextPart() should be called, and setCharsetOverride called on the returned IMessagePart.
Parameters
- $charsetOverride : string
-
the actual charset of the content.
- $onlyIfNoCharset : bool = false
-
if true, $charsetOverride is used only if getCharset returns null.
Return values
static —setContent()
Sets the content of the part to the passed string, resource, or stream.
public
setContent(mixed $resource[, string $charset = MailMimeParser::DEFAULT_CHARSET ]) : static
Parameters
- $resource : mixed
-
the content.
- $charset : string = MailMimeParser::DEFAULT_CHARSET
Return values
static —getErrorBagChildren()
Return any children ErrorBag objects.
protected
getErrorBagChildren() : array<string|int, IErrorBag>
Return values
array<string|int, IErrorBag> —validate()
Perform any extra validation and call 'addError'.
protected
validate() : void
getErrors and getAllErrors call validate() if their $validate parameter is true. validate() is only called once on an object with getErrors getAllErrors.