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php-manual-pt_BR-5.2.4-1mdv2008.1.noarch.rpm

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>exif_thumbnail</H1
><DIV
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><A
NAME="AEN44869"
></A
><P
>    (PHP 4 &#62;= 4.2.0, PHP 5)</P
>exif_thumbnail&nbsp;--&nbsp;Retrieve the embedded thumbnail of a TIFF or JPEG image</DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN44872"
></A
><H2
>Descrição</H2
>string <B
CLASS="methodname"
>exif_thumbnail</B
> ( string filename [, int &#38;width [, int &#38;height [, int &#38;imagetype]]] )<BR
></BR
><P
>&#13;   <B
CLASS="function"
>exif_thumbnail()</B
> reads the embedded thumbnail of a 
   <ACRONYM
CLASS="acronym"
>TIFF</ACRONYM
> or <ACRONYM
CLASS="acronym"
>JPEG</ACRONYM
> image. 
  </P
><P
>&#13;   If you want to deliver thumbnails through this function, you should send
   the mimetype information using the <A
HREF="function.header.html"
><B
CLASS="function"
>header()</B
></A
> function.
  </P
><P
>&#13;   It is possible that <B
CLASS="function"
>exif_thumbnail()</B
> cannot create an 
   image but can determine its size. In this case, the return value is 
   <TT
CLASS="constant"
><B
>FALSE</B
></TT
> but <CODE
CLASS="parameter"
>width</CODE
> and <CODE
CLASS="parameter"
>height</CODE
> 
   are set.
  </P
></DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN44900"
></A
><H2
>Parâmetros</H2
><P
>&#13;   <P
></P
><DIV
CLASS="variablelist"
><DL
><DT
><CODE
CLASS="parameter"
>filename</CODE
></DT
><DD
><P
>&#13;       The name of the image file being read.  This image contains an
       embedded thumbnail.
      </P
></DD
><DT
><CODE
CLASS="parameter"
>width</CODE
></DT
><DD
><P
>&#13;       The return width of the returned thumbnail.
      </P
></DD
><DT
><CODE
CLASS="parameter"
>height</CODE
></DT
><DD
><P
>&#13;       The returned height of the returned thumbnail.
      </P
></DD
><DT
><CODE
CLASS="parameter"
>imagetype</CODE
></DT
><DD
><P
>&#13;       The returned image type of the returned thumbnail.  This is either
       <ACRONYM
CLASS="acronym"
>TIFF</ACRONYM
> or <ACRONYM
CLASS="acronym"
>JPEG</ACRONYM
>.
      </P
></DD
></DL
></DIV
>
  </P
></DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN44926"
></A
><H2
>Valores de retornado</H2
><P
>&#13;   Returns the embedded thumbnail, or <TT
CLASS="constant"
><B
>FALSE</B
></TT
> if the image contains no 
   thumbnail.
  </P
></DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN44930"
></A
><H2
>Histórico</H2
><P
>&#13;   <DIV
CLASS="informaltable"
><P
></P
><A
NAME="AEN44933"
></A
><TABLE
BORDER="1"
CLASS="CALSTABLE"
><COL><COL><THEAD
><TR
><TH
>Versão</TH
><TH
>Descrição</TH
></TR
></THEAD
><TBODY
><TR
><TD
>4.3.0</TD
><TD
>&#13;        The optional parameters <CODE
CLASS="parameter"
>width</CODE
>, 
        <CODE
CLASS="parameter"
>height</CODE
>, and <CODE
CLASS="parameter"
>imagetype</CODE
> 
        all became available.
       </TD
></TR
><TR
><TD
>4.3.0</TD
><TD
>&#13;        May return thumbnails in the <ACRONYM
CLASS="acronym"
>TIFF</ACRONYM
> format.
       </TD
></TR
></TBODY
></TABLE
><P
></P
></DIV
>
  </P
></DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN44950"
></A
><H2
>Exemplos</H2
><P
>&#13;   <TABLE
WIDTH="100%"
BORDER="0"
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CLASS="EXAMPLE"
><TR
><TD
><DIV
CLASS="example"
><A
NAME="AEN44953"
></A
><P
><B
>Exemplo 1. <B
CLASS="function"
>exif_thumbnail()</B
> example</B
></P
><TABLE
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><TD
><code><font color="#000000">
<font color="#0000BB">&lt;?php<br /></font><font color="#007700">if (</font><font color="#0000BB">array_key_exists</font><font color="#007700">(</font><font color="#DD0000">'file'</font><font color="#007700">, </font><font color="#0000BB">$_REQUEST</font><font color="#007700">)) {<br />&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#0000BB">$image </font><font color="#007700">= </font><font color="#0000BB">exif_thumbnail</font><font color="#007700">(</font><font color="#0000BB">$_REQUEST</font><font color="#007700">[</font><font color="#DD0000">'file'</font><font color="#007700">], </font><font color="#0000BB">$width</font><font color="#007700">, </font><font color="#0000BB">$height</font><font color="#007700">, </font><font color="#0000BB">$type</font><font color="#007700">);<br />} else {<br />&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#0000BB">$image </font><font color="#007700">= </font><font color="#0000BB">false</font><font color="#007700">;<br />}<br />if (</font><font color="#0000BB">$image</font><font color="#007700">!==</font><font color="#0000BB">false</font><font color="#007700">) {<br />&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#0000BB">header</font><font color="#007700">(</font><font color="#DD0000">'Content-type: ' </font><font color="#007700">.</font><font color="#0000BB">image_type_to_mime_type</font><font color="#007700">(</font><font color="#0000BB">$type</font><font color="#007700">));<br />&nbsp;&nbsp;&nbsp;&nbsp;echo </font><font color="#0000BB">$image</font><font color="#007700">;<br />&nbsp;&nbsp;&nbsp;&nbsp;exit;<br />} else {<br />&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#FF8000">// no thumbnail available, handle the error here<br />&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#007700">echo </font><font color="#DD0000">'No thumbnail available'</font><font color="#007700">;<br />}<br /></font><font color="#0000BB">?&gt;</font>
</font>
</code></TD
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>
  </P
></DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN44957"
></A
><H2
>Veja também</H2
><P
>&#13;   <P
></P
><TABLE
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><TBODY
><TR
><TD
><A
HREF="function.exif-read-data.html"
><B
CLASS="function"
>exif_read_data()</B
></A
></TD
></TR
><TR
><TD
><A
HREF="function.image-type-to-mime-type.html"
><B
CLASS="function"
>image_type_to_mime_type()</B
></A
></TD
></TR
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></P
>
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