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    Php/docs/book.image

    • « read_exif_data
    • Introduction »


    • PHP Manual
    • Image Processing and Generation
    • Image Processing and GD


    • Introduction
    • Installing/Configuring
      • Requirements
      • Installation
      • Runtime Configuration
      • Resource Types
    • Predefined Constants
    • Examples
      • PNG creation with PHP
      • Adding watermarks to images using alpha channels
      • Using imagecopymerge to create a translucent watermark
    • GD and Image Functions
      • gd_info — Retrieve information about the currently installed GD library
      • getimagesize — Get the size of an image
      • getimagesizefromstring — Get the size of an image from a string
      • image_type_to_extension — Get file extension for image type
      • image_type_to_mime_type — Get Mime-Type for image-type returned by getimagesize, exif_read_data, exif_thumbnail, exif_imagetype
      • image2wbmp — Output image to browser or file
      • imageaffine — Return an image containing the affine transformed src image, using an optional clipping area
      • imageaffinematrixconcat — Concatenate two affine transformation matrices
      • imageaffinematrixget — Get an affine transformation matrix
      • imagealphablending — Set the blending mode for an image
      • imageantialias — Should antialias functions be used or not
      • imagearc — Draws an arc
      • imagebmp — Output a BMP image to browser or file
      • imagechar — Draw a character horizontally
      • imagecharup — Draw a character vertically
      • imagecolorallocate — Allocate a color for an image
      • imagecolorallocatealpha — Allocate a color for an image
      • imagecolorat — Get the index of the color of a pixel
      • imagecolorclosest — Get the index of the closest color to the specified color
      • imagecolorclosestalpha — Get the index of the closest color to the specified color + alpha
      • imagecolorclosesthwb — Get the index of the color which has the hue, white and blackness
      • imagecolordeallocate — De-allocate a color for an image
      • imagecolorexact — Get the index of the specified color
      • imagecolorexactalpha — Get the index of the specified color + alpha
      • imagecolormatch — Makes the colors of the palette version of an image more closely match the true color version
      • imagecolorresolve — Get the index of the specified color or its closest possible alternative
      • imagecolorresolvealpha — Get the index of the specified color + alpha or its closest possible alternative
      • imagecolorset — Set the color for the specified palette index
      • imagecolorsforindex — Get the colors for an index
      • imagecolorstotal — Find out the number of colors in an image's palette
      • imagecolortransparent — Define a color as transparent
      • imageconvolution — Apply a 3x3 convolution matrix, using coefficient and offset
      • imagecopy — Copy part of an image
      • imagecopymerge — Copy and merge part of an image
      • imagecopymergegray — Copy and merge part of an image with gray scale
      • imagecopyresampled — Copy and resize part of an image with resampling
      • imagecopyresized — Copy and resize part of an image
      • imagecreate — Create a new palette based image
      • imagecreatefrombmp — Create a new image from file or URL
      • imagecreatefromgd2 — Create a new image from GD2 file or URL
      • imagecreatefromgd2part — Create a new image from a given part of GD2 file or URL
      • imagecreatefromgd — Create a new image from GD file or URL
      • imagecreatefromgif — Create a new image from file or URL
      • imagecreatefromjpeg — Create a new image from file or URL
      • imagecreatefrompng — Create a new image from file or URL
      • imagecreatefromstring — Create a new image from the image stream in the string
      • imagecreatefromwbmp — Create a new image from file or URL
      • imagecreatefromwebp — Create a new image from file or URL
      • imagecreatefromxbm — Create a new image from file or URL
      • imagecreatefromxpm — Create a new image from file or URL
      • imagecreatetruecolor — Create a new true color image
      • imagecrop — Crop an image to the given rectangle
      • imagecropauto — Crop an image automatically using one of the available modes
      • imagedashedline — Draw a dashed line
      • imagedestroy — Destroy an image
      • imageellipse — Draw an ellipse
      • imagefill — Flood fill
      • imagefilledarc — Draw a partial arc and fill it
      • imagefilledellipse — Draw a filled ellipse
      • imagefilledpolygon — Draw a filled polygon
      • imagefilledrectangle — Draw a filled rectangle
      • imagefilltoborder — Flood fill to specific color
      • imagefilter — Applies a filter to an image
      • imageflip — Flips an image using a given mode
      • imagefontheight — Get font height
      • imagefontwidth — Get font width
      • imageftbbox — Give the bounding box of a text using fonts via freetype2
      • imagefttext — Write text to the image using fonts using FreeType 2
      • imagegammacorrect — Apply a gamma correction to a GD image
      • imagegd2 — Output GD2 image to browser or file
      • imagegd — Output GD image to browser or file
      • imagegetclip — Get the clipping rectangle
      • imagegetinterpolation — Get the interpolation method
      • imagegif — Output image to browser or file
      • imagegrabscreen — Captures the whole screen
      • imagegrabwindow — Captures a window
      • imageinterlace — Enable or disable interlace
      • imageistruecolor — Finds whether an image is a truecolor image
      • imagejpeg — Output image to browser or file
      • imagelayereffect — Set the alpha blending flag to use layering effects
      • imageline — Draw a line
      • imageloadfont — Load a new font
      • imageopenpolygon — Draws an open polygon
      • imagepalettecopy — Copy the palette from one image to another
      • imagepalettetotruecolor — Converts a palette based image to true color
      • imagepng — Output a PNG image to either the browser or a file
      • imagepolygon — Draws a polygon
      • imagerectangle — Draw a rectangle
      • imageresolution — Get or set the resolution of the image
      • imagerotate — Rotate an image with a given angle
      • imagesavealpha — Whether to retain full alpha channel information when saving PNG images
      • imagescale — Scale an image using the given new width and height
      • imagesetbrush — Set the brush image for line drawing
      • imagesetclip — Set the clipping rectangle
      • imagesetinterpolation — Set the interpolation method
      • imagesetpixel — Set a single pixel
      • imagesetstyle — Set the style for line drawing
      • imagesetthickness — Set the thickness for line drawing
      • imagesettile — Set the tile image for filling
      • imagestring — Draw a string horizontally
      • imagestringup — Draw a string vertically
      • imagesx — Get image width
      • imagesy — Get image height
      • imagetruecolortopalette — Convert a true color image to a palette image
      • imagettfbbox — Give the bounding box of a text using TrueType fonts
      • imagettftext — Write text to the image using TrueType fonts
      • imagetypes — Return the image types supported by this PHP build
      • imagewbmp — Output image to browser or file
      • imagewebp — Output a WebP image to browser or file
      • imagexbm — Output an XBM image to browser or file
      • iptcembed — Embeds binary IPTC data into a JPEG image
      • iptcparse — Parse a binary IPTC block into single tags
      • jpeg2wbmp — Convert JPEG image file to WBMP image file
      • png2wbmp — Convert PNG image file to WBMP image file
    • GdImage — The GdImage class


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