Docs For Class phpExifRW

$BytesPerFormat = array(0,1,1,2,4,8,1,1,2,4,8,4,8)

[line 355]

Stores total number fo Sections

Type:

mixed

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$cacheDir = ""

[line 383]

Type:

mixed

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$caching = true

[line 382]

Type:

mixed

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$currSection = 0

[line 353]

Type:

mixed

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$debug = false

[line 378]

Type:

mixed

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$DirWithThumbnailPtrs = 0

[line 357]

Type:

mixed

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$errno = 0

[line 375]

Type:

mixed

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$errstr = ""

[line 376]

Type:

mixed

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$ExifImageWidth = 0

[line 349]

Type:

mixed

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$exifSection = -1

[line 373]

Type:

mixed

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$file = ""

[line 367]

related to $RealMode arrays values

Type:

mixed

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$FocalplaneUnits = 0

[line 351]

Type:

mixed

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$FocalplaneXRes = 0

[line 350]

Type:

mixed

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$ImageReadMode = 3

[line 366]

Type:

mixed

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$MotorolaOrder = 0

[line 348]

Type:

mixed

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$newFile = 1

[line 368]

JPEG file to parse for EXIF data

Type:

mixed

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$ReadMode = array(
                            "READ_EXIF" => 1,
                            "READ_IMAGE" => 2,
                            "READ_ALL" => 3
                        )

[line 360]

Type:

mixed

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$sections = array()

[line 352]

Type:

mixed

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$showTags = false

[line 379]

Type:

mixed

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$thumbnail = ""

[line 370]

flag to check if the current file has been parsed or not.

Type:

mixed

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$ThumbnailSize = 0

[line 358]

Type:

mixed

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$thumbnailURL = ""

[line 371]

Type:

mixed

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constructor phpExifRW [line 390]

phpExifRW phpExifRW(
[string
$file = ""])

Constructor

Parameters:

string

$file

File name to be parsed.

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method addComment [line 1643]

void addComment(
string
$comment)

Adds comment to the image.

NOTE: Will have to call writeExif for the comments and other data to be written back to image.

Parameters:

string

$comment

Commnent as string

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method addExif [line 1730]

void addExif(
string
$exifData)

Returns the exif information stored

Parameters:

string

$exifData

Exif Data to be added.

NOTE: This function will blindly replace any existing EXIF data

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method assign [line 611]

void assign(
string
$file)

Changing / Assiging new file

Parameters:

string

$file

JPEG file to process

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method ConvertAnyFormat [line 1160]

void ConvertAnyFormat(
mixed
$ValuePtr, mixed
$Format)

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method ConvertAnyFormatBack [line 1203]

void ConvertAnyFormatBack(
mixed
$Value, mixed
$Format)

Reverse of ConvertAnyFormat, - Incomplete

TODO:

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method debug [line 429]

void debug(
string
$str, [int
$TYPE = 0])

Show Debugging information

Parameters:

string	$str	Debugging message to display
int	$TYPE	Type of error (0 - Warning, 1 - Error)

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method findMarker [line 1627]

int findMarker(
hex
$marker)

Searched for the tag specified in the sections list

Parameters:

hex

$marker

Tag to search for

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method Get16u [line 1081]

void Get16u(
int
$val, int
$by)

Converts two byte number into its equivalent int integer

Parameters:

int	$val
int	$by

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method Get32s [line 1099]

int Get32s(
int
$val1, int
$val2, int
$val3, int
$val4)

Converts 4-byte number into its equivalent integer

Parameters:

int	$val1
int	$val2
int	$val3
int	$val4

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method get32u [line 1123]

int get32u(
int
$val1, int
$val2, int
$val3, int
$val4)

Converts 4-byte number into its equivalent integer with the help of Get32s

Parameters:

int	$val1
int	$val2
int	$val3
int	$val4

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method getExif [line 1715]

void getExif(
)

Returns the exif information stored

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method getFormat [line 1681]

int getFormat(
hex
$tag)

Return the format of data of any tag.

Tags:

return:

Return the format as int

Parameters:

hex

$tag

Tag whose format has to looked for

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method getThumbnail [line 1284]

string getThumbnail(
)

Function to give back the whole image

Tags:

return:

full image

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method modifyExifDetails [line 1491]

void modifyExifDetails(
)

This functiion writes back the modifed exif data into the imageinfo array - INCOMPLETE

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method PrintFormatNumber [line 1134]

void PrintFormatNumber(
array
$ValuePtr, int
$Format, int
$ByteCount)

needed for examining exif header and printng the value of a tag

Parameters:

array	$ValuePtr
int	$Format
int	$ByteCount

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method ProcessExifDir [line 683]

void ProcessExifDir(
string
$DirStart, string
$OffsetBase, int
$ExifLength)

Process one of the nested EXIF directories.

Parameters:

string	$DirStart	All directory information
string	$OffsetBase	whole Section
int	$ExifLength	Length of exif section

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method processFile [line 442]

void processFile(
)

Processes the whole file.

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method process_COM [line 662]

void process_COM(
array
$data, int
$length)

Process Comments

Parameters:

array	$data	Section data
int	$length	Length of the section

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method process_EXIF [line 1027]

void process_EXIF(
array
$data, int
$length)

Process Exif data

Parameters:

array	$data	Section data as an array
int	$length	Length of the section (length of data array)

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method process_SOFn [line 631]

void process_SOFn(
array
$data, hex
$marker)

Process SOFn section of Image

Parameters:

array	$data	An array containing whole section.
hex	$marker	Marker to specify the type of section.

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method saveThumbnail [line 1251]

void saveThumbnail(
String
$ThumbFile)

Function to extract thumbnail from Exif data of the image.

and store it in a filename given by $ThumbFile

Parameters:

String

$ThumbFile

Files name to store the thumbnail

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method setExifData [line 1483]

void setExifData(
hex
$param, string
$value)

Modifies or sets value of specified Tag -

Parameters:

hex	$param	Tag, whose value has to be set
string	$value	Tags value

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method showImageInfo [line 1300]

void showImageInfo(
)

Display the extracted Exif information. It can overloaded for the look to change.

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method showThumbnail [line 1275]

string showThumbnail(
)

Returns thumbnail url along with parameter supplied.

Should be called in src attribute of image

Tags:

return:

File URL

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method writeImage [line 1755]

void writeImage(
string
$file)

Write the whole image back into a file.

This function does not write back to the same file. You need to specify a filename

Parameters:

string

$file

filename to save the JPEG content to

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Class: phpExifRW

Class Overview

Author(s):

Version:

Variables

Methods

Inherited Variables

Inherited Methods

Class Details

Tags:

Class Variables

$BytesPerFormat = array(0,1,1,2,4,8,1,1,2,4,8,4,8)

$cacheDir = ""

$caching = true

$currSection = 0

$debug = false

$DirWithThumbnailPtrs = 0

$errno = 0

$errstr = ""

$ExifImageWidth = 0

$exifSection = -1

$file = ""

$FocalplaneUnits = 0

$FocalplaneXRes = 0

$ImageReadMode = 3

$MotorolaOrder = 0

$newFile = 1

$ReadMode = array( "READ_EXIF" => 1, "READ_IMAGE" => 2, "READ_ALL" => 3 )

$sections = array()

$showTags = false

$thumbnail = ""

$ThumbnailSize = 0

$thumbnailURL = ""

Class Methods

constructor phpExifRW [line 390]

Parameters:

method addComment [line 1643]

Parameters:

method addExif [line 1730]

Parameters:

method assign [line 611]

Parameters:

method ConvertAnyFormat [line 1160]

method ConvertAnyFormatBack [line 1203]

method debug [line 429]

Parameters:

method findMarker [line 1627]

Parameters:

method Get16u [line 1081]

Parameters:

method Get32s [line 1099]

Parameters:

method get32u [line 1123]

Parameters:

method getExif [line 1715]

method getFormat [line 1681]

Tags:

Parameters:

method getThumbnail [line 1284]

Tags:

method modifyExifDetails [line 1491]

method PrintFormatNumber [line 1134]

Parameters:

method ProcessExifDir [line 683]

Parameters:

method processFile [line 442]

method process_COM [line 662]

Parameters:

method process_EXIF [line 1027]

Parameters:

method process_SOFn [line 631]

Parameters:

method saveThumbnail [line 1251]

Parameters:

method setExifData [line 1483]

Parameters:

method showImageInfo [line 1300]

method showThumbnail [line 1275]

Tags:

method writeImage [line 1755]

$ReadMode = array(
"READ_EXIF" => 1,
"READ_IMAGE" => 2,
"READ_ALL" => 3
)