Docs For Class PelEntrySByte

Description

Class for holding signed bytes.

This class can hold bytes, either just a single byte or an array of bytes. The class will be used to manipulate any of the Exif tags which has format PelFormat::BYTE.

author: Martin Geisler <mgeisler@users.sourceforge.net>

Located in /PelEntryByte.php (line 113)

PelEntry
   |
   --PelEntryNumber
      |
      --PelEntrySByte

Method Summary

PelEntrySByte __construct (PelTag $tag, int $value...)

string numberToBytes (int $number, PelByteOrder $order)

Variables

Inherited Variables

Inherited from PelEntryNumber

PelEntryNumber::$dimension
PelEntryNumber::$max
PelEntryNumber::$min
PelEntryNumber::$value

Inherited from PelEntry

PelEntry::$bytes
PelEntry::$components
PelEntry::$format
PelEntry::$ifd_type
PelEntry::$tag

Methods

Constructor __construct (line 132)

Make a new entry that can hold a signed byte.

The method accept several integer arguments. The getValue method will always return an array except for when a single integer argument is given here.

PelEntrySByte __construct (PelTag $tag, int $value...)

int $value...: the byte(s) that this entry will represent. The argument passed must obey the same rules as the argument to setValue, namely that it should be within range of a signed byte, that is between -128 and 127 (inclusive). If not, then a PelOverflowException will be thrown.
PelTag $tag: the tag which this entry represents. This should be one of the constants defined in PelTag which has format PelFormat::BYTE.

numberToBytes (line 154)

Convert a number into bytes.

return: bytes representing the number given.

string numberToBytes (int $number, PelByteOrder $order)

int $number: the number that should be converted.
PelByteOrder $order: one of PelConvert::LITTLE_ENDIAN and PelConvert::BIG_ENDIAN, specifying the target byte order.

Redefinition of:

PelEntryNumber::numberToBytes(): Convert a number into bytes.

Inherited Methods

Inherited From PelEntryNumber

PelEntryNumber::addNumber()
PelEntryNumber::formatNumber()
PelEntryNumber::getBytes()
PelEntryNumber::getText()
PelEntryNumber::getValue()
PelEntryNumber::numberToBytes()
PelEntryNumber::setValue()
PelEntryNumber::setValueArray()
PelEntryNumber::validateNumber()

Inherited From PelEntry

PelEntry::getBytes()
PelEntry::getComponents()
PelEntry::getFormat()
PelEntry::getIfdType()
PelEntry::getTag()
PelEntry::getText()
PelEntry::getValue()
PelEntry::setIfdType()
PelEntry::setValue()
PelEntry::__toString()