PHP-GD database-Classification

Introduction: This is the PHP-GD library-classification finishing detailed page, introduced and PHP, Gd, PHP PHP-GD library-classification sorting related knowledge, skills, experience, and some PHP source code.

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PHP-GD database-Classification

The GD library is messy and easy to get confused. Today, I took the time to classify it for your convenience.

image information:
gd_info: obtains information about the currently installed GD library.
imagetypes returns the image types supported by the current PHP version.
image_type_to_extension: obtains the image. type file suffix
image_type_to_mime_type: Get the MIME type of the image type
getimagesize: Get the image size
imagesx gets the image width

Image Height acquisition by imagesy
imageistruecolor: Check whether the image is a true color image

Create/load an image:
imagecreate-create a palette-based image
imagecreatefromgd2-create an image from the GD2 file or URL
imagecreatefromgd2part-from the given
imagecreatefromgd-create an image from the GD file or URL
imagecreatefromgif-create an image from the GIF file or URL one image
imagecreatefromjpeg-create an image from a jpeg file or URL
imagecreatefrompng-create an image from a PNG file or URL
imagecreatefromstring-create an image from the image stream in the string
imagecreatefromwbmp-create an image from a wbmp file or URL
imagecreatefromxbm-create a new image from an xbm file or URL one image
imagecreatefromxpm-create an image from an XPM file or URL
imagecreatetruecolor-create a true color image

output image:
image2wbmp outputs the image to a browser or file in wbmp format
imagegd2 outputs The GD2 image to a browser or file
imagegd GD image output to a browser or file
imagegif outputs the image to a browser or file in GIF format
imagewbmp outputs the image to a browser in wbmp format or file
imagexbm outputs xbm images to a browser or file
imagejpeg outputs images to a browser or file in JPEG format
imagepng output the image to a browser or file in PNG format

Miscellaneous:

Imagealphablending: Set the mixed color mode of the image.

Whether the image antialias function is used

Imageinterlace enables or disables interlace Scanning

Apply Gamma Correction to GD Images Using imagegammacorrect

Iptcembed embeds binary IPTC data into a JPEG Image

Iptcparse parses binary IPTC http://www.iptc.org/block into a single tag

Imagesavealpha settings flag to save the complete alpha channel information when saving the PNG Image (opposite to a single transparent color)

Graphics:

Draw an elliptical arc using imagearc

Imageconvolution uses the coefficient Div and offset to apply for a 3x3 convolution Matrix

Imagedashedline draw a dotted line

Imageellipse draws an elliptic

Imagerectangle draws a rectangle

Imagefilledarc draws an elliptical arc and fills it

Imagefilledellipse draw an elliptic and fill it

Imagefilledpolygon draws a polygon and fills it

Imagefilledrectangle: Draw a rectangle and fill it

Imagesetbrush: Specifies the paint brush image used to draw a line.

Imagesetpixel draws a single pixel

Imagesetstyle

Imagesetthickness: Set the width of the draw line.

Imagepolygon draws a polygon

Imageline draws a line segment

Character/font:

Imagechar draws a character horizontally

Imagecharup draw a vertical character

Draw a line of strings horizontally using imagestring

Imagestringup vertical draw a line of strings

Imagepsbbox provides a text box that uses the postscript type1 font.

Imagepsencodefont: change the character encoding vector in the font.

Imagepsextendfont expanded or simplified font

Imagepsfreefont releases the memory occupied by a postscript type 1 Font

Imagepsloadfont loads a postscript type 1 Font from the file

Imagepsslantfont skew a certain font

Imagepstext draws text strings in the image in the postscript type1 font

Imagettfbbox obtains the text range using the TrueType font

Imagettftext writes text to the image in TrueType font

Imageftbbox provides a text box in FreeType 2 font.

Imagefttext uses FreeType 2 to write text into the image

Imagefontheight: Get the font height

Imagefontwidth to get the font width

Imageloadfont loads a new font

Color:

Imagecolorallocate allocates color to an image

Imagecolorallocatealpha allocates color + Alpha to an image

Imagecolorat obtains the color index value of a certain pixel.

Imagecolorclosest obtains the index value closest to the specified color to obtain the color index value of a certain pixel.

Imagecolorclosestalpha gets the color closest to the specified color and transparency

Imagecolorclosesthwb gets the Black-White index that is the closest to the color of a given color.

Imagecolordeallocate cancel image color allocation

Imagecolorexact gets the index value of the specified color

Imagecolorexactalpha gets the specified color and transparency index value

Imagecolormatch better matches the color of the color palette in an image with the true color version.

Imagepalettecopy copy the palette from one image to another

Imagecolorresolve gets the index value of the specified color or the nearest possible alternative value.

Imagecolorresolvealpha gets the index value of the specified color + Alpha or the closest possible alternative value.

Imagecolorset sets the color for the specified palette Index

Imagecolorsforindex gets the color of an index

Imagecolorstotal gets the number of colors in the palette of an image

Imagecolortransparent defines a color as transparent

Image operations:

Copy part of the image

Copy and merge part of the image

Imagecopymergegray copies and merges a part of the image in grayscale mode.

Imagecopyresampled re-sample and copy part of the image and resize it

Imagecopyresized copy and resize some images

Imagerotate rotate the image from a given angle

Jpeg2wbmp converts JPEG image files into wbmp image files

Png2wbmp converts a PNG image file to a wbmp Image File

Imagedestroy destroy an image

Image processing:

Imagefilter

Imagelayereffect: Set the Alpha color mixing sign to use the bound libgd layering effect.

Imagetruecolortopalette converts a true color image to a color palette Image

Imagefill area Filling

Imagesettile

The imagefilltoborder area is filled to the border of the specified color.

Imagegrabscreen capture screen

Imagegrabwindow capture screen (slightly complicated)

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