Sophie: php-manual-ro-0:20051028-1 noarch

php-manual-ro-20051028-1.noarch.rpm

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><H1
><A
NAME="function.exif-imagetype"
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>exif_imagetype</H1
><DIV
CLASS="refnamediv"
><A
NAME="AEN37866"
></A
><P
>    (PHP 4 &#62;= 4.3.0, PHP 5)</P
>exif_imagetype&nbsp;--&nbsp;Determine the type of an image</DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN37869"
></A
><H2
>Description</H2
>int <B
CLASS="methodname"
>exif_imagetype</B
> ( string filename)<BR
></BR
><P
>&#13;    <B
CLASS="function"
>exif_imagetype()</B
> reads the first bytes of an image and
    checks its signature. When a correct signature is found a constant will be
    returned otherwise the return value is <TT
CLASS="constant"
><B
>FALSE</B
></TT
>. The return value is the
    same value that <A
HREF="function.getimagesize.html"
><B
CLASS="function"
>getimagesize()</B
></A
> returns in index 2 but
    this function is much faster.
   </P
><P
>&#13;    The following constants are defined:
    <DIV
CLASS="table"
><A
NAME="AEN37882"
></A
><P
><B
>Tabel 1. Imagetype Constants</B
></P
><TABLE
BORDER="1"
CLASS="CALSTABLE"
><COL><COL><THEAD
><TR
><TH
>Value</TH
><TH
>Constant</TH
></TR
></THEAD
><TBODY
><TR
><TD
>1</TD
><TD
><TT
CLASS="constant"
><B
>IMAGETYPE_GIF</B
></TT
></TD
></TR
><TR
><TD
>2</TD
><TD
><TT
CLASS="constant"
><B
>IMAGETYPE_JPEG</B
></TT
></TD
></TR
><TR
><TD
>3</TD
><TD
><TT
CLASS="constant"
><B
>IMAGETYPE_PNG</B
></TT
></TD
></TR
><TR
><TD
>4</TD
><TD
><TT
CLASS="constant"
><B
>IMAGETYPE_SWF</B
></TT
></TD
></TR
><TR
><TD
>5</TD
><TD
><TT
CLASS="constant"
><B
>IMAGETYPE_PSD</B
></TT
></TD
></TR
><TR
><TD
>6</TD
><TD
><TT
CLASS="constant"
><B
>IMAGETYPE_BMP</B
></TT
></TD
></TR
><TR
><TD
>7</TD
><TD
><TT
CLASS="constant"
><B
>IMAGETYPE_TIFF_II</B
></TT
> (intel byte order)</TD
></TR
><TR
><TD
>8</TD
><TD
>&#13;         <TT
CLASS="constant"
><B
>IMAGETYPE_TIFF_MM</B
></TT
> (motorola byte order)
        </TD
></TR
><TR
><TD
>9</TD
><TD
><TT
CLASS="constant"
><B
>IMAGETYPE_JPC</B
></TT
></TD
></TR
><TR
><TD
>10</TD
><TD
><TT
CLASS="constant"
><B
>IMAGETYPE_JP2</B
></TT
></TD
></TR
><TR
><TD
>11</TD
><TD
><TT
CLASS="constant"
><B
>IMAGETYPE_JPX</B
></TT
></TD
></TR
><TR
><TD
>12</TD
><TD
><TT
CLASS="constant"
><B
>IMAGETYPE_JB2</B
></TT
></TD
></TR
><TR
><TD
>13</TD
><TD
><TT
CLASS="constant"
><B
>IMAGETYPE_SWC</B
></TT
></TD
></TR
><TR
><TD
>14</TD
><TD
><TT
CLASS="constant"
><B
>IMAGETYPE_IFF</B
></TT
></TD
></TR
><TR
><TD
>15</TD
><TD
><TT
CLASS="constant"
><B
>IMAGETYPE_WBMP</B
></TT
></TD
></TR
><TR
><TD
>16</TD
><TD
><TT
CLASS="constant"
><B
>IMAGETYPE_XBM</B
></TT
></TD
></TR
></TBODY
></TABLE
></DIV
>       
   </P
><DIV
CLASS="note"
><BLOCKQUOTE
CLASS="note"
><P
><B
>Not&#227;: </B
>
     Support for <ACRONYM
CLASS="acronym"
>JPC</ACRONYM
>, <ACRONYM
CLASS="acronym"
>JP2</ACRONYM
>,
     <ACRONYM
CLASS="acronym"
>JPX</ACRONYM
>, <ACRONYM
CLASS="acronym"
>JB2</ACRONYM
>,
     <ACRONYM
CLASS="acronym"
>XBM</ACRONYM
>, and <ACRONYM
CLASS="acronym"
>WBMP</ACRONYM
> became available in
     PHP 4.3.2.  Support for <ACRONYM
CLASS="acronym"
>SWC</ACRONYM
> as of PHP 4.3.0.
    </P
></BLOCKQUOTE
></DIV
><P
>&#13;    This function can be used to avoid calls to other exif functions with
    unsupported file types or in conjunction with
    <VAR
CLASS="varname"
>$_SERVER['HTTP_ACCEPT']</VAR
> to check whether or 
    not the viewer is able to see a specific image in the browser.
   </P
><DIV
CLASS="note"
><BLOCKQUOTE
CLASS="note"
><P
><B
>Not&#227;: </B
>
     This function is only available if PHP is compiled using
     <VAR
CLASS="option"
>--enable-exif</VAR
>.
    </P
></BLOCKQUOTE
></DIV
><DIV
CLASS="note"
><BLOCKQUOTE
CLASS="note"
><P
><B
>Not&#227;: </B
>
     This function does not require the GD image library.
    </P
></BLOCKQUOTE
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><A
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></A
><P
><B
>Exemplu 1. <B
CLASS="function"
>exif_imagetype()</B
> example</B
></P
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><code><font color="#000000">
<font color="#0000BB">&lt;?php<br /><br /></font><font color="#007700">if (</font><font color="#0000BB">exif_imagetype</font><font color="#007700">(</font><font color="#DD0000">"image.gif"</font><font color="#007700">) != </font><font color="#0000BB">IMAGETYPE_GIF</font><font color="#007700">) {<br />&nbsp;&nbsp;&nbsp;&nbsp;echo </font><font color="#DD0000">"The picture is not a gif"</font><font color="#007700">;<br />}<br /><br /></font><font color="#0000BB">?&gt;</font>
</font>
</code></TD
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><P
>&#13;    See also <A
HREF="function.getimagesize.html"
><B
CLASS="function"
>getimagesize()</B
></A
>.
   </P
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