read_exif_data
Introduction
Image Processing and Generation
PHP Manual
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
imagealphablending
— Set the blending mode for an image
imageantialias
— Should antialias functions be used or not
imagearc
— Draws an arc
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
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
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
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
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
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 the bundled libgd layering effects
imageline
— Draw a line
imageloadfont
— Load a new font
imagepalettecopy
— Copy the palette from one image to another
imagepng
— Output a PNG image to either the browser or a file
imagepolygon
— Draws a polygon
imagepsbbox
— Give the bounding box of a text rectangle using PostScript Type1 fonts
imagepsencodefont
— Change the character encoding vector of a font
imagepsextendfont
— Extend or condense a font
imagepsfreefont
— Free memory used by a PostScript Type 1 font
imagepsloadfont
— Load a PostScript Type 1 font from file
imagepsslantfont
— Slant a font
imagepstext
— Draws a text over an image using PostScript Type1 fonts
imagerectangle
— Draw a rectangle
imagerotate
— Rotate an image with a given angle
imagesavealpha
— Set the flag to save full alpha channel information (as opposed to single-color transparency) when saving PNG images
imagesetbrush
— Set the brush image for line drawing
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
imagexbm
— Output 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
read_exif_data
Introduction
Image Processing and Generation
PHP Manual