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

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><DIV
CLASS="reference"
><A
NAME="ref.image"
></A
><DIV
CLASS="TITLEPAGE"
><H1
CLASS="title"
>XLII. Image Functions</H1
><DIV
CLASS="PARTINTRO"
><A
NAME="AEN37406"
></A
><DIV
CLASS="section"
><H1
CLASS="section"
><A
NAME="image.intro"
>Introducere</A
></H1
><P
>&#13;     PHP is not limited to creating just HTML output.  It can also be
     used to create and manipulate image files in a variety of different
     image formats, including gif, png, jpg, wbmp, and xpm. Even more
     convenient, PHP can output image streams directly to a browser. You
     will need to compile PHP with the GD library of image functions for
     this to work. GD and PHP may also require other libraries, depending
     on which image formats you want to work with.
    </P
><P
>&#13;     You can use the image functions in PHP to get the size of
     <ACRONYM
CLASS="acronym"
>JPEG</ACRONYM
>, <ACRONYM
CLASS="acronym"
>GIF</ACRONYM
>,
     <ACRONYM
CLASS="acronym"
>PNG</ACRONYM
>, <ACRONYM
CLASS="acronym"
>SWF</ACRONYM
>,
     <ACRONYM
CLASS="acronym"
>TIFF</ACRONYM
> and <ACRONYM
CLASS="acronym"
>JPEG2000</ACRONYM
> images.
    </P
><P
>&#13;     <DIV
CLASS="note"
><BLOCKQUOTE
CLASS="note"
><P
><B
>Not&#227;: </B
>
       Read requirements section about how to expand image capabilities
       to read, write and modify images and to read meta data of pictures
       taken by digital cameras.
      </P
></BLOCKQUOTE
></DIV
>
    </P
></DIV
><DIV
CLASS="section"
><H1
CLASS="section"
><A
NAME="image.requirements"
>Necesitãþi</A
></H1
><P
>&#13;     If you have the <ACRONYM
CLASS="acronym"
>GD</ACRONYM
> library (available at <A
HREF="http://www.boutell.com/gd/"
TARGET="_top"
>http://www.boutell.com/gd/</A
>) you will also be able to create
     and manipulate images.
    </P
><P
>&#13;     The format of images you are able to manipulate depend on the
     version of <ACRONYM
CLASS="acronym"
>GD</ACRONYM
> you install, and any other libraries
     <ACRONYM
CLASS="acronym"
>GD</ACRONYM
> might need to access those image formats.
     Versions of <ACRONYM
CLASS="acronym"
>GD</ACRONYM
> older than gd-1.6
     support GIF format images, and do not support PNG, where versions
     greater than gd-1.6 support PNG, not GIF.
      <DIV
CLASS="note"
><BLOCKQUOTE
CLASS="note"
><P
><B
>Not&#227;: </B
>
        Since PHP 4.3 there is a bundled version of the GD lib. This bundled
        version has some additional features like alpha blending, and should
        be used in preference to the external library
        since its codebase is better maintained and more stable.
       </P
></BLOCKQUOTE
></DIV
>
    </P
><P
>&#13;     You may wish to enhance GD to handle more image formats.
     <DIV
CLASS="table"
><A
NAME="AEN37432"
></A
><P
><B
>Tabel 1. Supported image formats</B
></P
><TABLE
BORDER="1"
CLASS="CALSTABLE"
><COL><COL><COL><THEAD
><TR
><TH
>Image format</TH
><TH
>Library to download</TH
><TH
>Notes</TH
></TR
></THEAD
><TBODY
><TR
><TD
><VAR
CLASS="literal"
>gif</VAR
></TD
><TD
>&nbsp;</TD
><TD
>&#13;          Only supported in GD versions older than gd-1.6. <SPAN
CLASS="emphasis"
><I
CLASS="emphasis"
>Read-only
          </I
></SPAN
> GIF support is available with PHP 4.3.0 and the bundled
          GD-library.
         </TD
></TR
><TR
><TD
><VAR
CLASS="literal"
>jpeg-6b</VAR
></TD
><TD
><A
HREF="ftp://ftp.uu.net/graphics/jpeg/"
TARGET="_top"
>ftp://ftp.uu.net/graphics/jpeg/</A
></TD
><TD
>&nbsp;</TD
></TR
><TR
><TD
><VAR
CLASS="literal"
>png</VAR
></TD
><TD
><A
HREF="http://www.libpng.org/pub/png/libpng.html"
TARGET="_top"
>http://www.libpng.org/pub/png/libpng.html</A
></TD
><TD
>&#13;          Only supported in GD versions greater than gd-1.6.
         </TD
></TR
><TR
><TD
><VAR
CLASS="literal"
>xpm</VAR
></TD
><TD
><A
HREF="ftp://metalab.unc.edu/pub/Linux/libs/X/!INDEX.html"
TARGET="_top"
>ftp://metalab.unc.edu/pub/Linux/libs/X/!INDEX.html</A
></TD
><TD
>&#13;          It's likely you have this library already available, if your system
          has an installed X-Environment.
         </TD
></TR
></TBODY
></TABLE
></DIV
>
    </P
><P
>&#13;     You may wish to enhance GD to deal with different fonts. The following
     font libraries are supported:
     <DIV
CLASS="table"
><A
NAME="AEN37466"
></A
><P
><B
>Tabel 2. Supported font libraries</B
></P
><TABLE
BORDER="1"
CLASS="CALSTABLE"
><COL><COL><COL><THEAD
><TR
><TH
>Font library</TH
><TH
>Download</TH
><TH
>Notes</TH
></TR
></THEAD
><TBODY
><TR
><TD
><VAR
CLASS="literal"
>FreeType 1.x</VAR
></TD
><TD
><A
HREF="http://www.freetype.org/"
TARGET="_top"
>http://www.freetype.org/</A
></TD
><TD
>&nbsp;</TD
></TR
><TR
><TD
><VAR
CLASS="literal"
>FreeType 2</VAR
></TD
><TD
><A
HREF="http://www.freetype.org/"
TARGET="_top"
>http://www.freetype.org/</A
></TD
><TD
>&nbsp;</TD
></TR
><TR
><TD
><VAR
CLASS="literal"
>T1lib</VAR
></TD
><TD
><A
HREF="ftp://sunsite.unc.edu/pub/Linux/libs/graphics/"
TARGET="_top"
>ftp://sunsite.unc.edu/pub/Linux/libs/graphics/</A
>)</TD
><TD
>&#13;          Support for Type 1 fonts.
         </TD
></TR
></TBODY
></TABLE
></DIV
>
    </P
><P
>&#13;     If you have PHP compiled with <VAR
CLASS="option"
>--enable-exif</VAR
>
     you are able to work with information stored in headers of
     <ACRONYM
CLASS="acronym"
>JPEG</ACRONYM
> and <ACRONYM
CLASS="acronym"
>TIFF</ACRONYM
> images. This way you can
     read meta data generated by digital cameras as mentioned above. These
     functions do not require the <ACRONYM
CLASS="acronym"
>GD</ACRONYM
> library.
     <DIV
CLASS="note"
><BLOCKQUOTE
CLASS="note"
><P
><B
>Not&#227;: </B
>
      PHP does not require any additional library for the exif module.
      </P
></BLOCKQUOTE
></DIV
>
    </P
></DIV
><DIV
CLASS="section"
><H1
CLASS="section"
><A
NAME="image.installation"
>Instalare</A
></H1
><P
>&#13;  To enable GD-support configure PHP
  <VAR
CLASS="option"
>--with-gd[=DIR]</VAR
>, where DIR is the GD base
  install directory. To use the recommended bundled version of the GD library
  (which was first bundled in PHP 4.3.0), use the configure option 
  <VAR
CLASS="option"
>--with-gd</VAR
>.
 </P
><P
>&#13;  In Windows, you'll include the GD2 DLL <TT
CLASS="filename"
>php_gd2.dll</TT
> as
  an extension in <TT
CLASS="filename"
>php.ini</TT
>. The GD1 DLL <TT
CLASS="filename"
>php_gd.dll</TT
> was
  removed in PHP 4.3.2. Also note that the preferred truecolor image
  functions, such as <A
HREF="function.imagecreatetruecolor.html"
><B
CLASS="function"
>imagecreatetruecolor()</B
></A
>, require GD2.
 </P
><DIV
CLASS="note"
><BLOCKQUOTE
CLASS="note"
><P
><B
>Not&#227;: </B
>
   To enable exif support in Windows, php_mbstring.dll must be loaded prior
   to php_exif.dll in php.ini.
  </P
></BLOCKQUOTE
></DIV
><P
>&#13;  To disable GD support in <SPAN
CLASS="emphasis"
><I
CLASS="emphasis"
>PHP 3</I
></SPAN
> add
  <VAR
CLASS="option"
>--without-gd</VAR
> to your configure line.
 </P
><P
>&#13;  Enhance the capabilities of GD to handle more image formats by specifying
  the <VAR
CLASS="literal"
>--with-XXXX</VAR
> configure switch to your PHP configure
  line.
  <DIV
CLASS="table"
><A
NAME="AEN37517"
></A
><P
><B
>Tabel 3. Supported image formats</B
></P
><TABLE
BORDER="1"
CLASS="CALSTABLE"
><COL><COL><THEAD
><TR
><TH
>Image Format</TH
><TH
>Configure Switch</TH
></TR
></THEAD
><TBODY
><TR
><TD
><VAR
CLASS="literal"
>jpeg-6b</VAR
></TD
><TD
>&#13;       To enable support for jpeg-6b add
       <VAR
CLASS="option"
>--with-jpeg-dir=DIR</VAR
>.
      </TD
></TR
><TR
><TD
><VAR
CLASS="literal"
>png</VAR
></TD
><TD
>&#13;       To enable support for png add
       <VAR
CLASS="option"
>--with-png-dir=DIR</VAR
>. Note, libpng
       requires the <A
HREF="ref.zlib.html#zlib.requirements"
>zlib library</A
>,
       therefore add <VAR
CLASS="option"
>--with-zlib-dir[=DIR]</VAR
>
       to your configure line.
      </TD
></TR
><TR
><TD
><VAR
CLASS="literal"
>xpm</VAR
></TD
><TD
>&#13;       To enable support for xpm add
       <VAR
CLASS="option"
>--with-xpm-dir=DIR</VAR
>. If configure
       is not able to find the required libraries, you may add the path to
       your X11 libraries.
      </TD
></TR
></TBODY
></TABLE
></DIV
>
  <DIV
CLASS="note"
><BLOCKQUOTE
CLASS="note"
><P
><B
>Not&#227;: </B
>
    When compiling PHP with libpng, you must use the same version that was
    linked with the GD library.
   </P
></BLOCKQUOTE
></DIV
>
 </P
><P
>&#13;  Enhance the capabilities of GD to deal with different fonts by specifying
  the <VAR
CLASS="literal"
>--with-XXXX</VAR
> configure switch to your PHP configure
  line.
  <DIV
CLASS="table"
><A
NAME="AEN37546"
></A
><P
><B
>Tabel 4. Supported font libraries</B
></P
><TABLE
BORDER="1"
CLASS="CALSTABLE"
><COL><COL><THEAD
><TR
><TH
>Font library</TH
><TH
>Configure Switch</TH
></TR
></THEAD
><TBODY
><TR
><TD
><VAR
CLASS="literal"
>FreeType 1.x</VAR
></TD
><TD
>&#13;       To enable support for FreeType 1.x add
       <VAR
CLASS="option"
>--with-ttf[=DIR]</VAR
>.
      </TD
></TR
><TR
><TD
><VAR
CLASS="literal"
>FreeType 2</VAR
></TD
><TD
>&#13;       To enable support for FreeType 2 add
       <VAR
CLASS="option"
>--with-freetype-dir=DIR</VAR
>.
      </TD
></TR
><TR
><TD
><VAR
CLASS="literal"
>T1lib</VAR
></TD
><TD
>&#13;       To enable support for T1lib (Type 1 fonts) add
       <VAR
CLASS="option"
>--with-t1lib[=DIR]</VAR
>.
      </TD
></TR
><TR
><TD
><VAR
CLASS="literal"
>Native TrueType string function</VAR
></TD
><TD
>&#13;       To enable support for native TrueType string function add
       <VAR
CLASS="option"
>--enable-gd-native-ttf</VAR
>.
      </TD
></TR
></TBODY
></TABLE
></DIV
>
 </P
></DIV
><DIV
CLASS="section"
><H1
CLASS="section"
><A
NAME="image.configuration"
>Configurare la rulare</A
></H1
><P
>&#13;The behaviour of these functions is affected by settings in <TT
CLASS="filename"
>php.ini</TT
>.
</P
><P
>&#13;  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
  <VAR
CLASS="literal"
>HTTP</VAR
> output.
 <DIV
CLASS="table"
><A
NAME="AEN37581"
></A
><P
><B
>Tabel 5. Exif configuration options</B
></P
><TABLE
BORDER="1"
CLASS="CALSTABLE"
><COL><COL><COL><THEAD
><TR
><TH
>Name</TH
><TH
>Default</TH
><TH
>Changeable</TH
></TR
></THEAD
><TBODY
><TR
><TD
>exif.encode_unicode</TD
><TD
>"ISO-8859-15"</TD
><TD
>PHP_INI_ALL</TD
></TR
><TR
><TD
>exif.decode_unicode_motorola</TD
><TD
>"UCS-2BE"</TD
><TD
>PHP_INI_ALL</TD
></TR
><TR
><TD
>exif.decode_unicode_intel</TD
><TD
>"UCS-2LE"</TD
><TD
>PHP_INI_ALL</TD
></TR
><TR
><TD
>exif.encode_jis</TD
><TD
>""</TD
><TD
>PHP_INI_ALL</TD
></TR
><TR
><TD
>exif.decode_jis_motorola</TD
><TD
>"JIS"</TD
><TD
>PHP_INI_ALL</TD
></TR
><TR
><TD
>exif.decode_jis_intel</TD
><TD
>"JIS"</TD
><TD
>PHP_INI_ALL</TD
></TR
></TBODY
></TABLE
></DIV
>
  For further details and definition of the PHP_INI_* constants see
  <A
HREF="function.ini-set.html"
><B
CLASS="function"
>ini_set()</B
></A
>.
 </P
><P
>Here's a short explanation of
the configuration directives.</P
><P
>&#13;  <P
></P
><DIV
CLASS="variablelist"
><DL
><DT
><A
NAME="ini.exif.encode-unicode"
></A
><VAR
CLASS="parameter"
>exif.encode_unicode</VAR
>
     <A
HREF="language.types.string.html"
><B
CLASS="type"
>string</B
></A
></DT
><DD
><P
>&#13;     <VAR
CLASS="literal"
>exif.encode_unicode</VAR
> 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
><VAR
CLASS="parameter"
>exif.decode_unicode_motorola</VAR
>
     <A
HREF="language.types.string.html"
><B
CLASS="type"
>string</B
></A
></DT
><DD
><P
>&#13;      <VAR
CLASS="literal"
>exif.decode_unicode_motorola</VAR
> 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
><VAR
CLASS="parameter"
>exif.decode_unicode_intel</VAR
>
     <A
HREF="language.types.string.html"
><B
CLASS="type"
>string</B
></A
></DT
><DD
><P
>&#13;      <VAR
CLASS="literal"
>exif.decode_unicode_intel</VAR
> 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
><VAR
CLASS="parameter"
>exif.encode_jis</VAR
>
     <A
HREF="language.types.string.html"
><B
CLASS="type"
>string</B
></A
></DT
><DD
><P
>&#13;      <VAR
CLASS="literal"
>exif.encode_jis</VAR
> 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
><VAR
CLASS="parameter"
>exif.decode_jis_motorola</VAR
>
     <A
HREF="language.types.string.html"
><B
CLASS="type"
>string</B
></A
></DT
><DD
><P
>&#13;      <VAR
CLASS="literal"
>exif.decode_jis_motorola</VAR
> 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
><VAR
CLASS="parameter"
>exif.decode_jis_intel</VAR
>
     <A
HREF="language.types.string.html"
><B
CLASS="type"
>string</B
></A
></DT
><DD
><P
>&#13;      <VAR
CLASS="literal"
>exif.decode_jis_intel</VAR
> 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="image.resources"
>Tipuri de resurse</A
></H1
><P
>Aceastã extensie nu defineºte tipuri de resurse.</P
></DIV
><DIV
CLASS="section"
><H1
CLASS="section"
><A
NAME="image.constants"
>Constante predefinite</A
></H1
><P
>&#13;Aceste constante sunt definite de aceastã extensie ºi
vor fi disponibile doar cînd extensia a fost fie
compilatã odatã la instalarea PHP fie dacã extensia este încãrcatã
dinamic la rulare.</P
><P
></P
><DIV
CLASS="variablelist"
><DL
><DT
><TT
CLASS="constant"
><B
>IMG_GIF</B
></TT
> 
    (<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>)</DT
><DD
><P
>&#13;     
    </P
></DD
><DT
><TT
CLASS="constant"
><B
>IMG_JPG</B
></TT
> 
    (<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>)</DT
><DD
><P
>&#13;     
    </P
></DD
><DT
><TT
CLASS="constant"
><B
>IMG_JPEG</B
></TT
> 
     (<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>)</DT
><DD
><P
>&#13;     
    </P
></DD
><DT
><TT
CLASS="constant"
><B
>IMG_PNG</B
></TT
> 
    (<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>)</DT
><DD
><P
>&#13;     
    </P
></DD
><DT
><TT
CLASS="constant"
><B
>IMG_WBMP</B
></TT
> 
    (<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>)</DT
><DD
><P
>&#13;     
    </P
></DD
><DT
><TT
CLASS="constant"
><B
>IMG_XPM</B
></TT
> 
    (<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>)</DT
><DD
><P
>&#13;     
    </P
></DD
><DT
><TT
CLASS="constant"
><B
>IMG_COLOR_TILED</B
></TT
> 
    (<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>)</DT
><DD
><P
>&#13;     
    </P
></DD
><DT
><TT
CLASS="constant"
><B
>IMG_COLOR_STYLED</B
></TT
> 
    (<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>)</DT
><DD
><P
>&#13;     
    </P
></DD
><DT
><TT
CLASS="constant"
><B
>IMG_COLOR_BRUSHED</B
></TT
> 
    (<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>)</DT
><DD
><P
>&#13;     
    </P
></DD
><DT
><TT
CLASS="constant"
><B
>IMG_COLOR_STYLEDBRUSHED</B
></TT
> 
    (<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>)</DT
><DD
><P
>&#13;     
    </P
></DD
><DT
><TT
CLASS="constant"
><B
>IMG_COLOR_TRANSPARENT</B
></TT
> 
    (<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>)</DT
><DD
><P
>&#13;     
    </P
></DD
><DT
><TT
CLASS="constant"
><B
>IMG_ARC_ROUNDED</B
></TT
> 
    (<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>)</DT
><DD
><P
>&#13;     
    </P
></DD
><DT
><TT
CLASS="constant"
><B
>IMG_ARC_PIE</B
></TT
> 
    (<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>)</DT
><DD
><P
>&#13;     
    </P
></DD
><DT
><TT
CLASS="constant"
><B
>IMG_ARC_CHORD</B
></TT
> 
    (<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>)</DT
><DD
><P
>&#13;     
    </P
></DD
><DT
><TT
CLASS="constant"
><B
>IMG_ARC_NOFILL</B
></TT
> 
    (<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>)</DT
><DD
><P
>&#13;     
    </P
></DD
><DT
><TT
CLASS="constant"
><B
>IMG_ARC_EDGED</B
></TT
> 
    (<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>)</DT
><DD
><P
>&#13;     
    </P
></DD
><DT
><TT
CLASS="constant"
><B
>IMAGETYPE_GIF</B
></TT
> 
    (<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>)</DT
><DD
><P
>&#13;     
    </P
></DD
><DT
><TT
CLASS="constant"
><B
>IMAGETYPE_JPEG</B
></TT
> 
    (<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>)</DT
><DD
><P
>&#13;     
    </P
></DD
><DT
><TT
CLASS="constant"
><B
>IMAGETYPE_PNG</B
></TT
> 
    (<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>)</DT
><DD
><P
>&#13;     
    </P
></DD
><DT
><TT
CLASS="constant"
><B
>IMAGETYPE_SWF</B
></TT
> 
    (<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>)</DT
><DD
><P
>&#13;     
    </P
></DD
><DT
><TT
CLASS="constant"
><B
>IMAGETYPE_PSD</B
></TT
> 
    (<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>)</DT
><DD
><P
>&#13;     
    </P
></DD
><DT
><TT
CLASS="constant"
><B
>IMAGETYPE_BMP</B
></TT
> 
    (<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>)</DT
><DD
><P
>&#13;     
    </P
></DD
><DT
><TT
CLASS="constant"
><B
>IMAGETYPE_WBMP</B
></TT
>
    (<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>)</DT
><DD
><P
>&#13;    
    </P
></DD
><DT
><TT
CLASS="constant"
><B
>IMAGETYPE_XBM</B
></TT
>
    (<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>)</DT
><DD
><P
>&#13;    
    </P
></DD
><DT
><TT
CLASS="constant"
><B
>IMAGETYPE_TIFF_II</B
></TT
> 
    (<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>)</DT
><DD
><P
>&#13;     
    </P
></DD
><DT
><TT
CLASS="constant"
><B
>IMAGETYPE_TIFF_MM</B
></TT
> 
    (<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>)</DT
><DD
><P
>&#13;     
    </P
></DD
><DT
><TT
CLASS="constant"
><B
>IMAGETYPE_IFF</B
></TT
> 
    (<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>)</DT
><DD
><P
>&#13;     
    </P
></DD
><DT
><TT
CLASS="constant"
><B
>IMAGETYPE_JB2</B
></TT
> 
    (<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>)</DT
><DD
><P
>&#13;     
    </P
></DD
><DT
><TT
CLASS="constant"
><B
>IMAGETYPE_JPC</B
></TT
> 
    (<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>)</DT
><DD
><P
>&#13;     
    </P
></DD
><DT
><TT
CLASS="constant"
><B
>IMAGETYPE_JP2</B
></TT
> 
    (<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>)</DT
><DD
><P
>&#13;     
    </P
></DD
><DT
><TT
CLASS="constant"
><B
>IMAGETYPE_JPX</B
></TT
> 
    (<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>)</DT
><DD
><P
>&#13;     
    </P
></DD
><DT
><TT
CLASS="constant"
><B
>IMAGETYPE_SWC</B
></TT
> 
    (<A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>)</DT
><DD
><P
>&#13;     
    </P
></DD
></DL
></DIV
></DIV
><DIV
CLASS="section"
><H1
CLASS="section"
><A
NAME="image.examples"
>Exemple</A
></H1
><P
>&#13;     <TABLE
WIDTH="100%"
BORDER="0"
CELLPADDING="0"
CELLSPACING="0"
CLASS="EXAMPLE"
><TR
><TD
><DIV
CLASS="example"
><A
NAME="AEN37862"
></A
><P
><B
>Exemplu 1. PNG creation with PHP</B
></P
><TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
CELLPADDING="5"
><TR
><TD
><code><font color="#000000">
<font color="#0000BB">&lt;?php<br />&nbsp;&nbsp;&nbsp;&nbsp;header</font><font color="#007700">(</font><font color="#DD0000">"Content-type: image/png"</font><font color="#007700">);<br />&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#0000BB">$string </font><font color="#007700">= </font><font color="#0000BB">$_GET</font><font color="#007700">[</font><font color="#DD0000">'text'</font><font color="#007700">];<br />&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#0000BB">$im&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#007700">= </font><font color="#0000BB">imagecreatefrompng</font><font color="#007700">(</font><font color="#DD0000">"images/button1.png"</font><font color="#007700">);<br />&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#0000BB">$orange </font><font color="#007700">= </font><font color="#0000BB">imagecolorallocate</font><font color="#007700">(</font><font color="#0000BB">$im</font><font color="#007700">, </font><font color="#0000BB">220</font><font color="#007700">, </font><font color="#0000BB">210</font><font color="#007700">, </font><font color="#0000BB">60</font><font color="#007700">);<br />&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#0000BB">$px&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#007700">= (</font><font color="#0000BB">imagesx</font><font color="#007700">(</font><font color="#0000BB">$im</font><font color="#007700">) - </font><font color="#0000BB">7.5 </font><font color="#007700">* </font><font color="#0000BB">strlen</font><font color="#007700">(</font><font color="#0000BB">$string</font><font color="#007700">)) / </font><font color="#0000BB">2</font><font color="#007700">;<br />&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#0000BB">imagestring</font><font color="#007700">(</font><font color="#0000BB">$im</font><font color="#007700">, </font><font color="#0000BB">3</font><font color="#007700">, </font><font color="#0000BB">$px</font><font color="#007700">, </font><font color="#0000BB">9</font><font color="#007700">, </font><font color="#0000BB">$string</font><font color="#007700">, </font><font color="#0000BB">$orange</font><font color="#007700">);<br />&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#0000BB">imagepng</font><font color="#007700">(</font><font color="#0000BB">$im</font><font color="#007700">);<br />&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#0000BB">imagedestroy</font><font color="#007700">(</font><font color="#0000BB">$im</font><font color="#007700">);<br /></font><font color="#0000BB">?&gt;</font>
</font>
</code></TD
></TR
></TABLE
></DIV
></TD
></TR
></TABLE
>
     This example would be called from a page with a tag like: &#60;img
     src="button.php?text=text"&#62;. The above button.php script
     then takes this "text" string and overlays it on top of a
     base image which in this case is "images/button1.png"
     and outputs the resulting image. This is a very convenient way to
     avoid having to draw new button images every time you want to
     change the text of a button. With this method they are
     dynamically generated.
    </P
></DIV
></DIV
><DIV
CLASS="TOC"
><DL
><DT
><B
>Cuprins</B
></DT
><DT
><A
HREF="function.exif-imagetype.html"
>exif_imagetype</A
>&nbsp;--&nbsp;Determine the type of an image</DT
><DT
><A
HREF="function.exif-read-data.html"
>exif_read_data</A
>&nbsp;--&nbsp;Reads the <ACRONYM
CLASS="acronym"
>EXIF</ACRONYM
> headers from <ACRONYM
CLASS="acronym"
>JPEG</ACRONYM
>
    or <ACRONYM
CLASS="acronym"
>TIFF</ACRONYM
>. This way you can read meta data generated by digital
    cameras.</DT
><DT
><A
HREF="function.exif-thumbnail.html"
>exif_thumbnail</A
>&nbsp;--&nbsp;Retrieve the embedded thumbnail of a TIFF or JPEG image</DT
><DT
><A
HREF="function.gd-info.html"
>gd_info</A
>&nbsp;--&nbsp;Retrieve information about the currently installed GD library</DT
><DT
><A
HREF="function.getimagesize.html"
>getimagesize</A
>&nbsp;--&nbsp;Get the size of an image</DT
><DT
><A
HREF="function.image-type-to-extension.html"
>image_type_to_extension</A
>&nbsp;--&nbsp;
   Get file extension for image type
  </DT
><DT
><A
HREF="function.image-type-to-mime-type.html"
>image_type_to_mime_type</A
>&nbsp;--&nbsp;Get Mime-Type for image-type returned by getimagesize, 
    exif_read_data, exif_thumbnail, exif_imagetype</DT
><DT
><A
HREF="function.image2wbmp.html"
>image2wbmp</A
>&nbsp;--&nbsp;Output image to browser or file</DT
><DT
><A
HREF="function.imagealphablending.html"
>imagealphablending</A
>&nbsp;--&nbsp;Set the blending mode for an image</DT
><DT
><A
HREF="function.imageantialias.html"
>imageantialias</A
>&nbsp;--&nbsp;
    Should antialias functions be used or not
   </DT
><DT
><A
HREF="function.imagearc.html"
>imagearc</A
>&nbsp;--&nbsp;Draw a partial ellipse</DT
><DT
><A
HREF="function.imagechar.html"
>imagechar</A
>&nbsp;--&nbsp;Draw a character horizontally</DT
><DT
><A
HREF="function.imagecharup.html"
>imagecharup</A
>&nbsp;--&nbsp;Draw a character vertically</DT
><DT
><A
HREF="function.imagecolorallocate.html"
>imagecolorallocate</A
>&nbsp;--&nbsp;Allocate a color for an image</DT
><DT
><A
HREF="function.imagecolorallocatealpha.html"
>imagecolorallocatealpha</A
>&nbsp;--&nbsp;Allocate a color for an image</DT
><DT
><A
HREF="function.imagecolorat.html"
>imagecolorat</A
>&nbsp;--&nbsp;Get the index of the color of a pixel</DT
><DT
><A
HREF="function.imagecolorclosest.html"
>imagecolorclosest</A
>&nbsp;--&nbsp;Get the index of the closest color to the specified color</DT
><DT
><A
HREF="function.imagecolorclosestalpha.html"
>imagecolorclosestalpha</A
>&nbsp;--&nbsp;Get the index of the closest color to the specified color + alpha</DT
><DT
><A
HREF="function.imagecolorclosesthwb.html"
>imagecolorclosesthwb</A
>&nbsp;--&nbsp;
     Get the index of the color which has the hue, white and blackness nearest to the given color
    </DT
><DT
><A
HREF="function.imagecolordeallocate.html"
>imagecolordeallocate</A
>&nbsp;--&nbsp;De-allocate a color for an image</DT
><DT
><A
HREF="function.imagecolorexact.html"
>imagecolorexact</A
>&nbsp;--&nbsp;Get the index of the specified color</DT
><DT
><A
HREF="function.imagecolorexactalpha.html"
>imagecolorexactalpha</A
>&nbsp;--&nbsp;Get the index of the specified color + alpha</DT
><DT
><A
HREF="function.imagecolormatch.html"
>imagecolormatch</A
>&nbsp;--&nbsp;
    Makes the colors of the palette version of an image more closely match
    the true color version
   </DT
><DT
><A
HREF="function.imagecolorresolve.html"
>imagecolorresolve</A
>&nbsp;--&nbsp;
    Get the index of the specified color or its closest possible
    alternative
   </DT
><DT
><A
HREF="function.imagecolorresolvealpha.html"
>imagecolorresolvealpha</A
>&nbsp;--&nbsp;
    Get the index of the specified color + alpha or its closest possible
    alternative
   </DT
><DT
><A
HREF="function.imagecolorset.html"
>imagecolorset</A
>&nbsp;--&nbsp;Set the color for the specified palette index</DT
><DT
><A
HREF="function.imagecolorsforindex.html"
>imagecolorsforindex</A
>&nbsp;--&nbsp;Get the colors for an index</DT
><DT
><A
HREF="function.imagecolorstotal.html"
>imagecolorstotal</A
>&nbsp;--&nbsp;Find out the number of colors in an image's palette</DT
><DT
><A
HREF="function.imagecolortransparent.html"
>imagecolortransparent</A
>&nbsp;--&nbsp;Define a color as transparent</DT
><DT
><A
HREF="function.imagecopy.html"
>imagecopy</A
>&nbsp;--&nbsp;Copy part of an image</DT
><DT
><A
HREF="function.imagecopymerge.html"
>imagecopymerge</A
>&nbsp;--&nbsp;Copy and merge part of an image</DT
><DT
><A
HREF="function.imagecopymergegray.html"
>imagecopymergegray</A
>&nbsp;--&nbsp;Copy and merge part of an image with gray scale</DT
><DT
><A
HREF="function.imagecopyresampled.html"
>imagecopyresampled</A
>&nbsp;--&nbsp;Copy and resize part of an image with resampling</DT
><DT
><A
HREF="function.imagecopyresized.html"
>imagecopyresized</A
>&nbsp;--&nbsp;Copy and resize part of an image</DT
><DT
><A
HREF="function.imagecreate.html"
>imagecreate</A
>&nbsp;--&nbsp;Create a new palette based image</DT
><DT
><A
HREF="function.imagecreatefromgd2.html"
>imagecreatefromgd2</A
>&nbsp;--&nbsp;Create a new image from GD2 file or URL</DT
><DT
><A
HREF="function.imagecreatefromgd2part.html"
>imagecreatefromgd2part</A
>&nbsp;--&nbsp;Create a new image from a given part of GD2 file or URL</DT
><DT
><A
HREF="function.imagecreatefromgd.html"
>imagecreatefromgd</A
>&nbsp;--&nbsp;Create a new image from GD file or URL</DT
><DT
><A
HREF="function.imagecreatefromgif.html"
>imagecreatefromgif</A
>&nbsp;--&nbsp;Create a new image from file or URL</DT
><DT
><A
HREF="function.imagecreatefromjpeg.html"
>imagecreatefromjpeg</A
>&nbsp;--&nbsp;Create a new image from file or URL</DT
><DT
><A
HREF="function.imagecreatefrompng.html"
>imagecreatefrompng</A
>&nbsp;--&nbsp;Create a new image from file or URL</DT
><DT
><A
HREF="function.imagecreatefromstring.html"
>imagecreatefromstring</A
>&nbsp;--&nbsp;Create a new image from the image stream in the string</DT
><DT
><A
HREF="function.imagecreatefromwbmp.html"
>imagecreatefromwbmp</A
>&nbsp;--&nbsp;Create a new image from file or URL</DT
><DT
><A
HREF="function.imagecreatefromxbm.html"
>imagecreatefromxbm</A
>&nbsp;--&nbsp;Create a new image from file or URL</DT
><DT
><A
HREF="function.imagecreatefromxpm.html"
>imagecreatefromxpm</A
>&nbsp;--&nbsp;Create a new image from file or URL</DT
><DT
><A
HREF="function.imagecreatetruecolor.html"
>imagecreatetruecolor</A
>&nbsp;--&nbsp;Create a new true color image</DT
><DT
><A
HREF="function.imagedashedline.html"
>imagedashedline</A
>&nbsp;--&nbsp;Draw a dashed line</DT
><DT
><A
HREF="function.imagedestroy.html"
>imagedestroy</A
>&nbsp;--&nbsp;Destroy an image</DT
><DT
><A
HREF="function.imageellipse.html"
>imageellipse</A
>&nbsp;--&nbsp;Draw an ellipse</DT
><DT
><A
HREF="function.imagefill.html"
>imagefill</A
>&nbsp;--&nbsp;Flood fill</DT
><DT
><A
HREF="function.imagefilledarc.html"
>imagefilledarc</A
>&nbsp;--&nbsp;Draw a partial ellipse and fill it</DT
><DT
><A
HREF="function.imagefilledellipse.html"
>imagefilledellipse</A
>&nbsp;--&nbsp;Draw a filled ellipse</DT
><DT
><A
HREF="function.imagefilledpolygon.html"
>imagefilledpolygon</A
>&nbsp;--&nbsp;Draw a filled polygon</DT
><DT
><A
HREF="function.imagefilledrectangle.html"
>imagefilledrectangle</A
>&nbsp;--&nbsp;Draw a filled rectangle</DT
><DT
><A
HREF="function.imagefilltoborder.html"
>imagefilltoborder</A
>&nbsp;--&nbsp;Flood fill to specific color</DT
><DT
><A
HREF="function.imagefilter.html"
>imagefilter</A
>&nbsp;--&nbsp;
     Applies Filter an image using a custom angle
    </DT
><DT
><A
HREF="function.imagefontheight.html"
>imagefontheight</A
>&nbsp;--&nbsp;Get font height</DT
><DT
><A
HREF="function.imagefontwidth.html"
>imagefontwidth</A
>&nbsp;--&nbsp;Get font width</DT
><DT
><A
HREF="function.imageftbbox.html"
>imageftbbox</A
>&nbsp;--&nbsp;Give the bounding box of a text using fonts via freetype2</DT
><DT
><A
HREF="function.imagefttext.html"
>imagefttext</A
>&nbsp;--&nbsp;Write text to the image using fonts using FreeType 2</DT
><DT
><A
HREF="function.imagegammacorrect.html"
>imagegammacorrect</A
>&nbsp;--&nbsp;Apply a gamma correction to a GD image</DT
><DT
><A
HREF="function.imagegd2.html"
>imagegd2</A
>&nbsp;--&nbsp;Output GD2 image</DT
><DT
><A
HREF="function.imagegd.html"
>imagegd</A
>&nbsp;--&nbsp;Output GD image to browser or file</DT
><DT
><A
HREF="function.imagegif.html"
>imagegif</A
>&nbsp;--&nbsp;Output image to browser or file</DT
><DT
><A
HREF="function.imageinterlace.html"
>imageinterlace</A
>&nbsp;--&nbsp;Enable or disable interlace</DT
><DT
><A
HREF="function.imageistruecolor.html"
>imageistruecolor</A
>&nbsp;--&nbsp;Finds whether an image is a truecolor image.</DT
><DT
><A
HREF="function.imagejpeg.html"
>imagejpeg</A
>&nbsp;--&nbsp;Output image to browser or file</DT
><DT
><A
HREF="function.imagelayereffect.html"
>imagelayereffect</A
>&nbsp;--&nbsp;
     Set the alpha blending flag to use the bundled libgd layering effects
    </DT
><DT
><A
HREF="function.imageline.html"
>imageline</A
>&nbsp;--&nbsp;Draw a line</DT
><DT
><A
HREF="function.imageloadfont.html"
>imageloadfont</A
>&nbsp;--&nbsp;Load a new font</DT
><DT
><A
HREF="function.imagepalettecopy.html"
>imagepalettecopy</A
>&nbsp;--&nbsp;Copy the palette from one image to another</DT
><DT
><A
HREF="function.imagepng.html"
>imagepng</A
>&nbsp;--&nbsp;Output a PNG image to either the browser or a file</DT
><DT
><A
HREF="function.imagepolygon.html"
>imagepolygon</A
>&nbsp;--&nbsp;Draw a polygon</DT
><DT
><A
HREF="function.imagepsbbox.html"
>imagepsbbox</A
>&nbsp;--&nbsp;
     Give the bounding box of a text rectangle using PostScript Type1
     fonts
    </DT
><DT
><A
HREF="function.imagepscopyfont.html"
>imagepscopyfont</A
>&nbsp;--&nbsp;
     Make a copy of an already loaded font for further modification
    </DT
><DT
><A
HREF="function.imagepsencodefont.html"
>imagepsencodefont</A
>&nbsp;--&nbsp;Change the character encoding vector of a font</DT
><DT
><A
HREF="function.imagepsextendfont.html"
>imagepsextendfont</A
>&nbsp;--&nbsp;Extend or condense a font</DT
><DT
><A
HREF="function.imagepsfreefont.html"
>imagepsfreefont</A
>&nbsp;--&nbsp;Free memory used by a PostScript Type 1 font</DT
><DT
><A
HREF="function.imagepsloadfont.html"
>imagepsloadfont</A
>&nbsp;--&nbsp;Load a PostScript Type 1 font from file</DT
><DT
><A
HREF="function.imagepsslantfont.html"
>imagepsslantfont</A
>&nbsp;--&nbsp;Slant a font</DT
><DT
><A
HREF="function.imagepstext.html"
>imagepstext</A
>&nbsp;--&nbsp;To draw a text string over an image using PostScript Type1 fonts</DT
><DT
><A
HREF="function.imagerectangle.html"
>imagerectangle</A
>&nbsp;--&nbsp;Draw a rectangle</DT
><DT
><A
HREF="function.imagerotate.html"
>imagerotate</A
>&nbsp;--&nbsp;Rotate an image with a given angle</DT
><DT
><A
HREF="function.imagesavealpha.html"
>imagesavealpha</A
>&nbsp;--&nbsp;
    Set the flag to save full alpha channel information (as opposed to
    single-color transparency) when saving PNG images.
   </DT
><DT
><A
HREF="function.imagesetbrush.html"
>imagesetbrush</A
>&nbsp;--&nbsp;Set the brush image for line drawing</DT
><DT
><A
HREF="function.imagesetpixel.html"
>imagesetpixel</A
>&nbsp;--&nbsp;Set a single pixel</DT
><DT
><A
HREF="function.imagesetstyle.html"
>imagesetstyle</A
>&nbsp;--&nbsp;Set the style for line drawing</DT
><DT
><A
HREF="function.imagesetthickness.html"
>imagesetthickness</A
>&nbsp;--&nbsp;Set the thickness for line drawing</DT
><DT
><A
HREF="function.imagesettile.html"
>imagesettile</A
>&nbsp;--&nbsp;Set the tile image for filling</DT
><DT
><A
HREF="function.imagestring.html"
>imagestring</A
>&nbsp;--&nbsp;Draw a string horizontally</DT
><DT
><A
HREF="function.imagestringup.html"
>imagestringup</A
>&nbsp;--&nbsp;Draw a string vertically</DT
><DT
><A
HREF="function.imagesx.html"
>imagesx</A
>&nbsp;--&nbsp;Get image width</DT
><DT
><A
HREF="function.imagesy.html"
>imagesy</A
>&nbsp;--&nbsp;Get image height</DT
><DT
><A
HREF="function.imagetruecolortopalette.html"
>imagetruecolortopalette</A
>&nbsp;--&nbsp;Convert a true color image to a palette image</DT
><DT
><A
HREF="function.imagettfbbox.html"
>imagettfbbox</A
>&nbsp;--&nbsp;Give the bounding box of a text using TrueType fonts</DT
><DT
><A
HREF="function.imagettftext.html"
>imagettftext</A
>&nbsp;--&nbsp;Write text to the image using TrueType fonts</DT
><DT
><A
HREF="function.imagetypes.html"
>imagetypes</A
>&nbsp;--&nbsp;Return the image types supported by this PHP build</DT
><DT
><A
HREF="function.imagewbmp.html"
>imagewbmp</A
>&nbsp;--&nbsp;Output image to browser or file</DT
><DT
><A
HREF="function.imagexbm.html"
>imagexbm</A
>&nbsp;--&nbsp;
     Output XBM image to browser or file
    </DT
><DT
><A
HREF="function.iptcembed.html"
>iptcembed</A
>&nbsp;--&nbsp;Embed binary IPTC data into a JPEG image</DT
><DT
><A
HREF="function.iptcparse.html"
>iptcparse</A
>&nbsp;--&nbsp;
     Parse a binary IPTC <A
HREF="http://www.iptc.org/"
TARGET="_top"
>http://www.iptc.org/</A
>
     block into single tags.
    </DT
><DT
><A
HREF="function.jpeg2wbmp.html"
>jpeg2wbmp</A
>&nbsp;--&nbsp;Convert JPEG image file to WBMP image file</DT
><DT
><A
HREF="function.png2wbmp.html"
>png2wbmp</A
>&nbsp;--&nbsp;Convert PNG image file to WBMP image file</DT
><DT
><A
HREF="function.read-exif-data.html"
>read_exif_data</A
>&nbsp;--&nbsp;Alias of <A
HREF="function.exif-read-data.html"
><B
CLASS="function"
>exif_read_data()</B
></A
></DT
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><A
HREF="function.ob-iconv-handler.html"
ACCESSKEY="P"
>Înapoi</A
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