PHP character image

PHP character image

See this old man's post to interest http://www.oschina.net/code/snippet_234517_15356 By default, the image is enlarged by 10 times, so we can see it clearly ...... The OSC logo is used for testing. let's see how it works. (The picture is scaled down, the new window opens this address to see, 2000*560 graph http://img.it-home.org/data/attachment/forum/2014pic/11033136_K1mt.png) ========================================================== ================ I have tried PNG, GIF, and JPG to convert them to normal characters :) $ Txt = array ('A', 'B', 'C', 'D', 'e', 'e', 'F', 'G', 'H ', 'I', 'J', 'k '); // Load the original image $ RawImage = ImageCreateFromGIF('logo.gif '); // Obtain the width and height of the original image $ RawImgWidth = ImagesX ($ rawImage ); $ RawImgHeigh = ImagesY ($ rawImage ); // Obtain the gray scale of the original image $ GrayData = getGrayData ($ rawImage, $ rawImgWidth, $ rawImgHeigh ); // Destroy the image ImageDestroy ($ rawImage ); // Create a text image $ TxtImage = ImageCreate ($ rawImgWidth * 6, $ rawImgHeigh * 9 ); // New Image background color Imagecolorallocate ($ txtImage, 0, 0 ); // Obtain the maximum gray scale For ($ I = 0; $ I $ MaxGrayArray [$ I] = max ($ grayData [$ I]); } $ MaxGray = max ($ maxGrayArray ); // Set the grayscale color For ($ I = 0; $ I <$ maxGray + 1; $ I ++ ){ $ Color = 255-round (200/$ maxGray) * $ I + 55; $ Gray [$ I] = imagecolorallocate ($ txtImage, $ color ); } // Draw characters For ($ y = 0; $ y <$ rawImgHeigh; $ y ++ ){ For ($ x = 0; $ x <$ rawImgWidth; $ x ++ ){ Imagechar ($ txtImage, 1, $ x * 6, $ y * 9, $ txt [rand (0, 10)], $ gray [$ grayData [$ x] [$ y]); } } // Create the final image $ Image = ImageCreate ($ rawImgWidth * 10, $ rawImgHeigh * 10 ); // Stretch the image Imagecopyresampled ($ Image, $ txtImage, 0, 0, 0, 0, $ rawImgWidth * 10, $ rawImgHeigh * 10, $ rawImgWidth * 6, $ rawImgHeigh * 9 ); // Define the file header Header ('content-type: image/png '); // Output image ImagePNG ($ Image ); // Destroy the image ImageDestroy ($ Image ); /* Get grayscale value */ Function getGrayData ($ mImage, $ mImgWidth, $ mImgHeigh ){ For ($ mY = 0; $ mY <$ mImgHeigh; $ mY ++ ){ For ($ mX = 0; $ mX <$ mImgWidth; $ mX ++ ){ $ MRGB = Imagecolorat ($ mImage, $ mX, $ mY ); $ MR = ($ mRGB> 16) & 0xFF; $ MG = ($ mRGB> 8) & 0xFF; $ MB = $ mRGB & 0xFF ;; $ MGrayData [$ mX] [$ mY] = ($ mR * 19595 + $ mG * 38469 + $ mB * 7472)> 16; } } Return $ mGrayData; } ?>