<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<HTML
><HEAD
><TITLE
>Exif Functions</TITLE
><META
NAME="GENERATOR"
CONTENT="Modular DocBook HTML Stylesheet Version 1.79"><LINK
REL="HOME"
TITLE="Manual do PHP"
HREF="index.html"><LINK
REL="UP"
TITLE="Referência das Funções"
HREF="funcref.html"><LINK
REL="PREVIOUS"
TITLE="user_error"
HREF="function.user-error.html"><LINK
REL="NEXT"
TITLE="exif_imagetype"
HREF="function.exif-imagetype.html"><META
HTTP-EQUIV="Content-type"
CONTENT="text/html; charset=UTF-8"></HEAD
><BODY
CLASS="reference"
BGCOLOR="#FFFFFF"
TEXT="#000000"
LINK="#0000FF"
VLINK="#840084"
ALINK="#0000FF"
><DIV
CLASS="NAVHEADER"
><TABLE
SUMMARY="Header navigation table"
WIDTH="100%"
BORDER="0"
CELLPADDING="0"
CELLSPACING="0"
><TR
><TH
COLSPAN="3"
ALIGN="center"
>Manual do PHP</TH
></TR
><TR
><TD
WIDTH="10%"
ALIGN="left"
VALIGN="bottom"
><A
HREF="function.user-error.html"
ACCESSKEY="P"
>Anterior</A
></TD
><TD
WIDTH="80%"
ALIGN="center"
VALIGN="bottom"
></TD
><TD
WIDTH="10%"
ALIGN="right"
VALIGN="bottom"
><A
HREF="function.exif-imagetype.html"
ACCESSKEY="N"
>Próxima</A
></TD
></TR
></TABLE
><HR
ALIGN="LEFT"
WIDTH="100%"></DIV
><DIV
CLASS="reference"
><A
NAME="ref.exif"
></A
><DIV
CLASS="TITLEPAGE"
><H1
CLASS="title"
>XXXIV. Exif Functions</H1
><DIV
CLASS="PARTINTRO"
><A
NAME="AEN44401"
></A
><DIV
CLASS="section"
><H1
CLASS="section"
><A
NAME="exif.intro"
>Introdução</A
></H1
><P
> With the exif extension you are able to work with image meta data. For
example, you may use exif functions to read meta data of pictures taken
from digital cameras by working with information stored in the headers of
the <ACRONYM
CLASS="acronym"
>JPEG</ACRONYM
> and <ACRONYM
CLASS="acronym"
>TIFF</ACRONYM
> images.
</P
></DIV
><DIV
CLASS="section"
><H1
CLASS="section"
><A
NAME="exif.requirements"
>Dependências</A
></H1
><P
> Your PHP must be compiled in with <TT
CLASS="literal"
>--enable-exif</TT
>.
PHP does not require any additional library for the exif module. Windows
users must also have the <A
HREF="ref.mbstring.html"
> mbstring</A
>
extension enabled.
</P
></DIV
><DIV
CLASS="section"
><H1
CLASS="section"
><A
NAME="exif.installation"
>Instalação</A
></H1
><P
> To enable exif-support configure PHP with
<CODE
CLASS="option"
>--enable-exif</CODE
>
</P
><P
> Windows users must enable both the <TT
CLASS="filename"
>php_mbstring.dll</TT
>
and <TT
CLASS="filename"
>php_exif.dll</TT
> DLL's in <TT
CLASS="filename"
>php.ini</TT
>. The
<TT
CLASS="filename"
>php_mbstring.dll</TT
> DLL must be loaded
<SPAN
CLASS="emphasis"
><I
CLASS="emphasis"
>before</I
></SPAN
> the <TT
CLASS="filename"
>php_exif.dll</TT
> DLL so
adjust your <TT
CLASS="filename"
>php.ini</TT
> accordingly.
</P
></DIV
><DIV
CLASS="section"
><H1
CLASS="section"
><A
NAME="exif.configuration"
>Configurações em execução</A
></H1
><P
> O comportamento dessas funções podem ser modificado pelas configurações do <TT
CLASS="filename"
>php.ini</TT
>.
</P
><P
> Exif supports automatically conversion for Unicode and JIS
character encodings of user comments when module
<A
HREF="ref.mbstring.html"
>mbstring</A
>
is available. This is done by first decoding the comment
using the specified characterset. The result is then encoded
with another characterset which should match your
<TT
CLASS="literal"
>HTTP</TT
> output.
<DIV
CLASS="table"
><A
NAME="AEN44431"
></A
><P
><B
>Tabela 1. Exif configuration options</B
></P
><TABLE
BORDER="1"
CLASS="CALSTABLE"
><COL><COL><COL><COL><THEAD
><TR
><TH
>Name</TH
><TH
>Default</TH
><TH
>Changeable</TH
><TH
>Changelog</TH
></TR
></THEAD
><TBODY
><TR
><TD
>exif.encode_unicode</TD
><TD
>"ISO-8859-15"</TD
><TD
>PHP_INI_ALL</TD
><TD
>Available since PHP 4.3.0.</TD
></TR
><TR
><TD
>exif.decode_unicode_motorola</TD
><TD
>"UCS-2BE"</TD
><TD
>PHP_INI_ALL</TD
><TD
>Available since PHP 4.3.0.</TD
></TR
><TR
><TD
>exif.decode_unicode_intel</TD
><TD
>"UCS-2LE"</TD
><TD
>PHP_INI_ALL</TD
><TD
>Available since PHP 4.3.0.</TD
></TR
><TR
><TD
>exif.encode_jis</TD
><TD
>""</TD
><TD
>PHP_INI_ALL</TD
><TD
>Available since PHP 4.3.0.</TD
></TR
><TR
><TD
>exif.decode_jis_motorola</TD
><TD
>"JIS"</TD
><TD
>PHP_INI_ALL</TD
><TD
>Available since PHP 4.3.0.</TD
></TR
><TR
><TD
>exif.decode_jis_intel</TD
><TD
>"JIS"</TD
><TD
>PHP_INI_ALL</TD
><TD
>Available since PHP 4.3.0.</TD
></TR
></TBODY
></TABLE
></DIV
>
Para mais detalhes e definições das constantes
PHP_INI_*, veja <A
HREF="ini.html"
>Apêndice H</A
>.
</P
><P
>Breve descrição das
diretivas de configuração.</P
><P
> <P
></P
><DIV
CLASS="variablelist"
><DL
><DT
><A
NAME="ini.exif.encode-unicode"
></A
><CODE
CLASS="parameter"
>exif.encode_unicode</CODE
>
<A
HREF="language.types.string.html"
><B
CLASS="type"
>string</B
></A
></DT
><DD
><P
> <TT
CLASS="literal"
>exif.encode_unicode</TT
> defines the
characterset UNICODE user comments are handled.
This defaults to ISO-8859-15 which should work for
most non Asian countries. The setting can be empty
or must be an encoding supported by mbstring. If it
is empty the current internal encoding of mbstring is
used.
</P
></DD
><DT
><A
NAME="ini.exif.decode-unicode-motorola"
></A
><CODE
CLASS="parameter"
>exif.decode_unicode_motorola</CODE
>
<A
HREF="language.types.string.html"
><B
CLASS="type"
>string</B
></A
></DT
><DD
><P
> <TT
CLASS="literal"
>exif.decode_unicode_motorola</TT
> defines
the image internal characterset for Unicode encoded user
comments if image is in motorola byte order (big-endian).
This setting cannot be empty but you can specify a list
of encodings supported by mbstring. The default is UCS-2BE.
</P
></DD
><DT
><A
NAME="ini.exif.decode-unicode-intel"
></A
><CODE
CLASS="parameter"
>exif.decode_unicode_intel</CODE
>
<A
HREF="language.types.string.html"
><B
CLASS="type"
>string</B
></A
></DT
><DD
><P
> <TT
CLASS="literal"
>exif.decode_unicode_intel</TT
> defines
the image internal characterset for Unicode encoded user
comments if image is in intel byte order (little-endian).
This setting cannot be empty but you can specify a list
of encodings supported by mbstring. The default is UCS-2LE.
</P
></DD
><DT
><A
NAME="ini.exif.encode-jis"
></A
><CODE
CLASS="parameter"
>exif.encode_jis</CODE
>
<A
HREF="language.types.string.html"
><B
CLASS="type"
>string</B
></A
></DT
><DD
><P
> <TT
CLASS="literal"
>exif.encode_jis</TT
> defines the
characterset JIS user comments are handled.
This defaults to an empty value which forces
the functions to use the current internal encoding
of mbstring.
</P
></DD
><DT
><A
NAME="ini.exif.decode-jis-motorola"
></A
><CODE
CLASS="parameter"
>exif.decode_jis_motorola</CODE
>
<A
HREF="language.types.string.html"
><B
CLASS="type"
>string</B
></A
></DT
><DD
><P
> <TT
CLASS="literal"
>exif.decode_jis_motorola</TT
> defines
the image internal characterset for JIS encoded user
comments if image is in motorola byte order (big-endian).
This setting cannot be empty but you can specify a list
of encodings supported by mbstring. The default is JIS.
</P
></DD
><DT
><A
NAME="ini.exif.decode-jis-intel"
></A
><CODE
CLASS="parameter"
>exif.decode_jis_intel</CODE
>
<A
HREF="language.types.string.html"
><B
CLASS="type"
>string</B
></A
></DT
><DD
><P
> <TT
CLASS="literal"
>exif.decode_jis_intel</TT
> defines
the image internal characterset for JIS encoded user
comments if image is in intel byte order (little-endian).
This setting cannot be empty but you can specify a list
of encodings supported by mbstring. The default is JIS.
</P
></DD
></DL
></DIV
>
</P
></DIV
><DIV
CLASS="section"
><H1
CLASS="section"
><A
NAME="exif.resources"
>Tipos Resource</A
></H1
><P
>Esta extensão não possui nenhum tipo resource.</P
></DIV
><DIV
CLASS="section"
><H1
CLASS="section"
><A
NAME="exif.constants"
>Constantes pré-definidas</A
></H1
><P
> As contantes abaixo são definidas por esta extensão e somente
estarão disponíveis quando a extensão foi compilada com o PHP
ou carregada dinamicamente durante a execução.
</P
><P
> <P
></P
><DIV
CLASS="variablelist"
><DL
><DT
><TT
CLASS="constant"
><B
>EXIF_USE_MBSTRING</B
></TT
>
(<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>)</DT
><DD
><P
>
</P
></DD
></DL
></DIV
>
</P
><P
> The <A
HREF="function.exif-imagetype.html"
><B
CLASS="function"
>exif_imagetype()</B
></A
> lists several related built-in
constants.
</P
></DIV
></DIV
><DIV
CLASS="TOC"
><DL
><DT
><B
>Índice</B
></DT
><DT
><A
HREF="function.exif-imagetype.html"
>exif_imagetype</A
> -- Determine the type of an image</DT
><DT
><A
HREF="function.exif-read-data.html"
>exif_read_data</A
> -- Reads the <ACRONYM
CLASS="acronym"
>EXIF</ACRONYM
> headers from <ACRONYM
CLASS="acronym"
>JPEG</ACRONYM
> or <ACRONYM
CLASS="acronym"
>TIFF</ACRONYM
></DT
><DT
><A
HREF="function.exif-tagname.html"
>exif_tagname</A
> -- Get the header name for an index</DT
><DT
><A
HREF="function.exif-thumbnail.html"
>exif_thumbnail</A
> -- Retrieve the embedded thumbnail of a TIFF or JPEG image</DT
><DT
><A
HREF="function.read-exif-data.html"
>read_exif_data</A
> -- Sinônimo de <A
HREF="function.exif-read-data.html"
><B
CLASS="function"
>exif_read_data()</B
></A
></DT
></DL
></DIV
></DIV
></DIV
><DIV
CLASS="NAVFOOTER"
><HR
ALIGN="LEFT"
WIDTH="100%"><TABLE
SUMMARY="Footer navigation table"
WIDTH="100%"
BORDER="0"
CELLPADDING="0"
CELLSPACING="0"
><TR
><TD
WIDTH="33%"
ALIGN="left"
VALIGN="top"
><A
HREF="function.user-error.html"
ACCESSKEY="P"
>Anterior</A
></TD
><TD
WIDTH="34%"
ALIGN="center"
VALIGN="top"
><A
HREF="index.html"
ACCESSKEY="H"
>Principal</A
></TD
><TD
WIDTH="33%"
ALIGN="right"
VALIGN="top"
><A
HREF="function.exif-imagetype.html"
ACCESSKEY="N"
>Próxima</A
></TD
></TR
><TR
><TD
WIDTH="33%"
ALIGN="left"
VALIGN="top"
>user_error</TD
><TD
WIDTH="34%"
ALIGN="center"
VALIGN="top"
><A
HREF="funcref.html"
ACCESSKEY="U"
>Acima</A
></TD
><TD
WIDTH="33%"
ALIGN="right"
VALIGN="top"
>exif_imagetype</TD
></TR
></TABLE
></DIV
></BODY
></HTML
>
