php image image function set

This article collects some functions related to image operations in PHP. There is a brief description. Friends in need can refer to it.

php image image function set, as follows:

gd_info function: Get information about the currently installed GD library getimagesize function: Get the size of the image image_type_to_extension function: Get the file suffix of the image type image_type_to_mime_type function: Determine the MIME type of an IMAGETYPE constant image2wbmp function: Output image to browser or file in WBMP format imagealphablending function: Set the color mixing mode of the image imageantialias function: whether to use the antialias (anti-aliasing) function imagearc function: draw elliptical arc imagechar function: draw a character horizontally imagecharup function: draw a character vertically imagecolorallocate function: assigns a color to an image imagecolorallocatealpha function: assign color + alpha to an image imagecolorat function: Get the color index value of a certain pixel imagecolorclosest function: Gets the index value of the color closest to the specified color imagecolorclosestalpha function: Gets the index value of the color closest to the specified color plus transparency imagecolorclosesthwb function: Gets the black and white index of the chromaticity closest to the specified color. imagecolordeallocate function: Cancel the allocation of image color imagecolorexact function: Get the index value of the specified color imagecolorexactalpha function: Get the index value of the specified color plus transparency imagecolormatch function: Makes the color palette version of an image more closely match the true color version imagecolorresolve function: Gets the index value of the specified color or the closest possible alternative value imagecolorresolvealpha function: Gets the index value of the specified color transparency or the closest alternative value possible. imagecolorset function: Set the color for the specified palette index imagecolorsforindex function: Get the color of a certain index imagecolorstotal function: Get the number of colors in the palette of an image imagecolortransparent function: Define a color as a transparent color imageconvolution function: apply for a 3*3 convolution matrix imagecopy function: copy part of an image imagecopymerge function: Copy and merge part of an image imagecopymergegray function: Copy and merge part of an image in grayscale imagecopyresampled function: Resample copies part of the image and resizes it imagecopyresized function: copy part of the image and resize it imagecreate function: Create a new palette-based image

imagecreatefromgd2 function: Create a new image from a GD 2 file or URL imagecreatefromgd2part function: Create a new image from a part of the given GD 2 file or URL imagecreatefromgd function: Create a new image from a GD file or URL imagecreatefromgif function: Create a new image from a GIF file or URL imagecreatefromjpeg function: Create a new image from a JPEG file or URL imagecreatefrompng function: Create a new image from a PNG file or URL imagecreatefromstring function: Create a new image from the image stream in the string imagecreatefromwbmp function: Create a new image from a WBMP file or URL imagecreatefromxbm function: Create a new image from an XBM file or URL imagecreatefromxpm function: Create a new image from an XPM file or URL imagecreatetruecolor function: Create a new true color image imagedashedline function: draw a dotted line imagedestroy function: Destroy an image imageellipse function: draw an ellipse imagefill function: fill an area with the specified color imagefilledarc function: draw an elliptical arc and fill it imagefilledellipse function: draw an ellipse and fill it imagefilledpolygon function: draw a polygon and fill it imagefilledrectangle function: draw a rectangle and fill it imagefilltoborder function: fill the area to the border of the specified color imagefilter function: applies a filter to an image imagefontheight function: Get the font height imagefontwidth function: get the font width imageftbbox function: gives a text box using FreeType2 font imagefttext function: Write text to image using FreeType2 font imagegammacorrect function: applies gamma correction to GD images imagegd2 function: Output GD 2 image to browser or file imagegd function: output GD image to browser or file imagegif function: Output an image to a browser or file in GIF format imageinterlace function: Activate or disable interlacing imageistruecolor function: checks whether the image is a true color image imagejpeg function: Output an image in JPEG format to a browser or file imagelayereffect function: Set the alpha mixing flag to use the bound libgd layering effect imageline function: draw a line segment imageloadfont function: load a new font imagepalettecopy function: Copies a palette from one image to another imagepng function: Output an image to a browser or file in PNG format imagepolygon function: draw a polygon imagepsbbox function: gives a text box using PostScript Type1 font imagepsencodefont function: change the character encoding vector in the font imagepsextendfont function: expand or simplify fonts imagepsfreefont function: Release the memory occupied by a PostScript Type1 font imagepsloadfont function: loads a PostScript Type1 font from a file imagepsslantfont function: tilt a font imagepstext function: draw text strings on images using PostScript Type1 font imagerectangle function: draw a rectangle imagerotate function: Rotate the image by a given angle imagesavealpha function: Set flag to save complete alpha channel information when saving PNG images imagesetbrush function: Set the brush image used for drawing lines imagesetpixel function: draw a single pixel imagesetstyle function: Set the style of line drawing imagesethickness function: sets the width of the drawn line imagesettile function: Set the texture used for filling imagestring function: draw a line of string horizontally imagestringup function: draw a line of string vertically imagesx function: Get image width imagesy function: Get image height imagetruecolortopalette function: Convert true color image to palette image imagettfbbox function: Get the range of text using TrueType font imagettftext function: Write text to the image using TrueType font imagetypes function: returns the image types supported by the current PHP version imagewbmp function: Output images to a browser or file in WBMP format imagexbm function: Output XBM images to a browser or file iptcembed function: Embed binary IPTC data into a JPEG image iptcparse function: parses binary IPTC blocks into individual tokens jpeg2wbmp function: Convert JPEG image files to WBMP image files png2wbmp function: Convert PNG image files to WBMP image files