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>Image functions</TITLE
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><H1
CLASS="title"
>XXVIII. Image functions</H1
><DIV
CLASS="PARTINTRO"
><A
NAME="AEN14714"
></A
><P
>&#13;    You can use the image functions in PHP to get the size of
    <SPAN
CLASS="acronym"
>JPEG</SPAN
>, <SPAN
CLASS="acronym"
>GIF</SPAN
>,
    <SPAN
CLASS="acronym"
>PNG</SPAN
>, and <SPAN
CLASS="acronym"
>SWF</SPAN
> images, and if
    you have the <SPAN
CLASS="acronym"
>GD</SPAN
> 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 gd you install, and any other libraries gd might need
    to access those image formats. Versions of gd 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.
   </P
><P
>&#13;    In order to read and write images in jpeg format, you will need to
    obtain and install jpeg-6b (available at 
    <A
HREF="ftp://ftp.uu.net/graphics/jpeg/"
TARGET="_top"
>ftp://ftp.uu.net/graphics/jpeg/</A
>), and then recompile gd to
    make use of jpeg-6b. You will also have to compile PHP with 
    <TT
CLASS="option"
>--with-jpeg-dir=/path/to/jpeg-6b</TT
>.
   </P
><P
>&#13;    To add support for Type 1 fonts, you can install t1lib (available 
    at <A
HREF="ftp://ftp.neuroinformatik.ruhr-uni-bochum.de/pub/software/t1lib/"
TARGET="_top"
>ftp://ftp.neuroinformatik.ruhr-uni-bochum.de/pub/software/t1lib/</A
>), and then add 
    <TT
CLASS="option"
>--with-t1lib[=dir]</TT
>.
   </P
></DIV
><DIV
CLASS="TOC"
><DL
><DT
><B
>Table of Contents</B
></DT
><DT
><A
HREF="function.getimagesize.html"
>GetImageSize</A
> &#8212; Get the size of a GIF, JPEG, PNG or SWF image</DT
><DT
><A
HREF="function.imagearc.html"
>ImageArc</A
> &#8212; Draw a partial ellipse</DT
><DT
><A
HREF="function.imagechar.html"
>ImageChar</A
> &#8212; Draw a character horizontally</DT
><DT
><A
HREF="function.imagecharup.html"
>ImageCharUp</A
> &#8212; Draw a character vertically</DT
><DT
><A
HREF="function.imagecolorallocate.html"
>ImageColorAllocate</A
> &#8212; Allocate a color for an image</DT
><DT
><A
HREF="function.imagecolordeallocate.html"
>ImageColorDeAllocate</A
> &#8212; 
     De-allocate a color for an image
    </DT
><DT
><A
HREF="function.imagecolorat.html"
>ImageColorAt</A
> &#8212; Get the index of the color of a pixel</DT
><DT
><A
HREF="function.imagecolorclosest.html"
>ImageColorClosest</A
> &#8212; 
     Get the index of the closest color to the specified color
    </DT
><DT
><A
HREF="function.imagecolorexact.html"
>ImageColorExact</A
> &#8212; Get the index of the specified color</DT
><DT
><A
HREF="function.imagecolorresolve.html"
>ImageColorResolve</A
> &#8212; 
     Get the index of the specified color or its closest possible
     alternative
    </DT
><DT
><A
HREF="function.imagegammacorrect.html"
>ImageGammaCorrect</A
> &#8212; 
     Apply a gamma correction to a GD image
    </DT
><DT
><A
HREF="function.imagecolorset.html"
>ImageColorSet</A
> &#8212; 
     Set the color for the specified palette index
    </DT
><DT
><A
HREF="function.imagecolorsforindex.html"
>ImageColorsForIndex</A
> &#8212; Get the colors for an index</DT
><DT
><A
HREF="function.imagecolorstotal.html"
>ImageColorsTotal</A
> &#8212; 
     Find out the number of colors in an image's palette
    </DT
><DT
><A
HREF="function.imagecolortransparent.html"
>ImageColorTransparent</A
> &#8212; Define a color as transparent</DT
><DT
><A
HREF="function.imagecopy.html"
>ImageCopy</A
> &#8212; 
     Copy part of an image
    </DT
><DT
><A
HREF="function.imagecopyresized.html"
>ImageCopyResized</A
> &#8212; Copy and resize part of an image</DT
><DT
><A
HREF="function.imagecreate.html"
>ImageCreate</A
> &#8212; Create a new image</DT
><DT
><A
HREF="function.imagecreatefromgif.html"
>ImageCreateFromGIF</A
> &#8212; Create a new image from file or URL</DT
><DT
><A
HREF="function.imagecreatefromjpeg.html"
>ImageCreateFromJPEG</A
> &#8212; Create a new image from file or URL</DT
><DT
><A
HREF="function.imagecreatefrompng.html"
>ImageCreateFromPNG</A
> &#8212; Create a new image from file or URL</DT
><DT
><A
HREF="function.imagedashedline.html"
>ImageDashedLine</A
> &#8212; Draw a dashed line</DT
><DT
><A
HREF="function.imagedestroy.html"
>ImageDestroy</A
> &#8212; Destroy an image</DT
><DT
><A
HREF="function.imagefill.html"
>ImageFill</A
> &#8212; Flood fill</DT
><DT
><A
HREF="function.imagefilledpolygon.html"
>ImageFilledPolygon</A
> &#8212; Draw a filled polygon</DT
><DT
><A
HREF="function.imagefilledrectangle.html"
>ImageFilledRectangle</A
> &#8212; Draw a filled rectangle</DT
><DT
><A
HREF="function.imagefilltoborder.html"
>ImageFillToBorder</A
> &#8212; Flood fill to specific color</DT
><DT
><A
HREF="function.imagefontheight.html"
>ImageFontHeight</A
> &#8212; Get font height</DT
><DT
><A
HREF="function.imagefontwidth.html"
>ImageFontWidth</A
> &#8212; Get font width</DT
><DT
><A
HREF="function.imagegif.html"
>ImageGIF</A
> &#8212; Output image to browser or file</DT
><DT
><A
HREF="function.imagepng.html"
>ImagePNG</A
> &#8212; 
     Output a PNG image to either the browser or a file
    </DT
><DT
><A
HREF="function.imagejpeg.html"
>ImageJPEG</A
> &#8212; Output image to browser or file</DT
><DT
><A
HREF="function.imageinterlace.html"
>ImageInterlace</A
> &#8212; Enable or disable interlace</DT
><DT
><A
HREF="function.imageline.html"
>ImageLine</A
> &#8212; Draw a line</DT
><DT
><A
HREF="function.imageloadfont.html"
>ImageLoadFont</A
> &#8212; Load a new font</DT
><DT
><A
HREF="function.imagepolygon.html"
>ImagePolygon</A
> &#8212; Draw a polygon</DT
><DT
><A
HREF="function.imagepsbbox.html"
>ImagePSBBox</A
> &#8212; 
     Give the bounding box of a text rectangle using PostScript Type1
     fonts
    </DT
><DT
><A
HREF="function.imagepsencodefont.html"
>ImagePSEncodeFont</A
> &#8212; 
     Change the character encoding vector of a font
    </DT
><DT
><A
HREF="function.imagepsfreefont.html"
>ImagePSFreeFont</A
> &#8212; Free memory used by a PostScript Type 1 font</DT
><DT
><A
HREF="function.imagepsloadfont.html"
>ImagePSLoadFont</A
> &#8212; Load a PostScript Type 1 font from file</DT
><DT
><A
HREF="function.imagepsextendfont.html"
>ImagePsExtendFont</A
> &#8212; 
     Extend or condense a font
    </DT
><DT
><A
HREF="function.imagepsslantfont.html"
>ImagePsSlantFont</A
> &#8212; 
     Slant a font
    </DT
><DT
><A
HREF="function.imagepstext.html"
>ImagePSText</A
> &#8212; 
     To draw a text string over an image using PostScript Type1 fonts
    </DT
><DT
><A
HREF="function.imagerectangle.html"
>ImageRectangle</A
> &#8212; Draw a rectangle</DT
><DT
><A
HREF="function.imagesetpixel.html"
>ImageSetPixel</A
> &#8212; Set a single pixel</DT
><DT
><A
HREF="function.imagestring.html"
>ImageString</A
> &#8212; Draw a string horizontally</DT
><DT
><A
HREF="function.imagestringup.html"
>ImageStringUp</A
> &#8212; Draw a string vertically</DT
><DT
><A
HREF="function.imagesx.html"
>ImageSX</A
> &#8212; Get image width</DT
><DT
><A
HREF="function.imagesy.html"
>ImageSY</A
> &#8212; Get image height</DT
><DT
><A
HREF="function.imagettfbbox.html"
>ImageTTFBBox</A
> &#8212; 
     Give the bounding box of a text using TypeType fonts
    </DT
><DT
><A
HREF="function.imagettftext.html"
>ImageTTFText</A
> &#8212; 
     Write text to the image using TrueType fonts
    </DT
><DT
><A
HREF="function.imagetypes.html"
>ImageTypes</A
> &#8212; 
     Return the image types supported by this PHP build
    </DT
><DT
><A
HREF="function.read-exif-data.html"
>read_exif_data</A
> &#8212; Read the EXIF headers from a JPEG</DT
></DL
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