MailMimeParser 3.0

IMessagePart extends IErrorBag, SplSubject
in

An interface representing a single part of an email.

The base type for a message or any child part of a message. The part may contain content, have a parent, and identify the type of content (e.g. mime-type or charset) agnostically.

The interface extends SplSubject -- any modifications to a message must notify any attached observers.

Tags
author

Zaahid Bateson

Table of Contents

__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.
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.
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.
getCharset()  : string|null
Returns the charset of the content, or null if not applicable/defined.
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.
getContentDisposition()  : string|null
Returns the content's disposition, or returns the value of $default if not defined.
getContentId()  : string|null
Returns the Content ID of the part, or null if not defined.
getContentStream()  : StreamInterface|null
Returns the StreamInterface for the part's content or null if the part doesn't have a content section.
getContentTransferEncoding()  : string|null
Returns the content transfer encoding used to encode the content on this part, or the value of $default if not defined.
getContentType()  : string
Returns the mime type of the content, or $default if one is not set.
getErrorLoggingContextName()  : string
Returns a context name for the current object to help identify it 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.
isMime()  : bool
Returns true if the current part is a mime part.
isTextPart()  : bool
Returns true if the content of this part is plain text.
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.

Methods

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 —

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

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IMessagePart::setContent()

to pass a string as the content.

see
IMessagePart::getContentStream()

to get the content stream.

see
IMessagePart::detachContentStream()

to detach the content stream.

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.

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IMessagePart::getBinaryContentStream()

to get a stream instead.

see
IMessagePart::saveContent()

to save the binary contents to file.

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).
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IMessagePart::getContentStream()

to get the content stream with charset conversions applied.

see
IMessagePart::getBinaryContentResourceHandle()

to get a resource handle instead.

see
IMessagePart::saveContent()

to save the binary contents to file.

Return values
StreamInterface|null —

the stream

getCharset()

Returns the charset of the content, or null if not applicable/defined.

public getCharset() : string|null
Return values
string|null —

the charset

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

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IMessagePart::getContentStream()
Return values
string|null —

the content

getContentDisposition()

Returns the content's disposition, or returns the value of $default if not defined.

public getContentDisposition([string $default = null ]) : string|null
Parameters
$default : string = null

Optional default value to return if not applicable/defined

Return values
string|null —

the disposition.

getContentId()

Returns the Content ID of the part, or null if not defined.

public getContentId() : string|null
Return values
string|null —

the content ID.

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.

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IMessagePart::getBinaryContentStream()

to get the content stream without any charset conversions.

see
IMessagePart::saveContent()

to save the binary contents to file.

see
IMessagePart::setCharsetOverride()

to override the charset of the content and ignore the charset returned from calling IMessagePart::getCharset() when reading.

Return values
StreamInterface|null —

the stream

getContentTransferEncoding()

Returns the content transfer encoding used to encode the content on this part, or the value of $default if not defined.

public getContentTransferEncoding([string|null $default = null ]) : string|null
Parameters
$default : string|null = null

Optional default value to return if not applicable/defined

Return values
string|null —

the transfer encoding defined for the part.

getContentType()

Returns the mime type of the content, or $default if one is not set.

public getContentType([string $default = 'text/plain' ]) : string
Parameters
$default : string = 'text/plain'

Optional override for the default return value of 'text/plain.

Return values
string —

the mime type

getErrorLoggingContextName()

Returns a context name for the current object to help identify it 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

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.
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IMessagePart::getStream()

to get a Psr7 StreamInterface instead of a resource handle.

see
IMessagePart::__toString()

to write the part to a string and return it.

see
IMessage::save()

to write the part to a file, resource handle or Psr7 stream.

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.
Tags
see
IMessagePart::getResourceHandle()

to get a resource handle.

see
IMessagePart::__toString()

to write the part to a string and return it.

see
IMessage::save()

to write the part to a file, resource handle or Psr7 stream.

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 —

isMime()

Returns true if the current part is a mime part.

public isMime() : bool
Return values
bool —

isTextPart()

Returns true if the content of this part is plain text.

public isTextPart() : bool
Return values
bool —

save()

Writes a string representation of this part, including its headers, content and children to the passed file, resource, or stream.

public save(string|resource|StreamInterface $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 : string|resource|StreamInterface

the file, resource, or stream to write to.

$filemode : string = 'w+'

Optional filemode to open a file in (if $filenameResourceOrStream is a string)

Tags
see
IMessagePart::getResourceHandle()

to get a resource handle.

see
IMessagePart::__toString()

to get the part in a string.

see
IMessage::save()

to write the part to a file, resource handle or Psr7 stream.

Return values
static —

saveContent()

Saves the binary content of the stream to the passed file, resource or stream.

public saveContent(string|resource|StreamInterface $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 : string|resource|StreamInterface
Tags
see
IMessagePart::getContentStream()

to get the content stream with charset conversions applied.

see
IMessagePart::getBinaryContentStream()

to get the content as a binary stream.

see
IMessagePart::getBinaryContentResourceHandle()

to get the content as a resource handle.

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.

Tags
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IMessagePart::getContentStream()

to get the content stream.

Return values
static —

setContent()

Sets the content of the part to the passed string, resource, or stream.

public setContent(string|resource|StreamInterface $resource[, string $resourceCharset = MailMimeParser::DEFAULT_CHARSET ]) : static
Parameters
$resource : string|resource|StreamInterface

the content.

$resourceCharset : string = MailMimeParser::DEFAULT_CHARSET

the charset of the passed $resource.

Tags
see
IMessagePart::getContentStream()

to get the content stream.

see
IMessagePart::attachContentStream()

to attach a content stream.

see
IMessagePart::detachContentStream()

to detach the content stream.

Return values
static —

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