PHP image processing class library and demo _ PHP Tutorial

PHP image processing class library and demonstration sharing. PHP image processing class library and demo sharing a simple PHP image processing class library. although there are few functions, it is not very advanced yet. I will try it later, or which PHP image processing class library and demonstration?

I simply wrote a PHP image processing class library. although it has few functions, it is not very advanced at present. I will use it later, or which of the following functions can I add to my suggestion, if you want to extend the class library, I have time to add it. if you want to extend the class library, you can share it with me. the code can be used now, there are not many things to consider. please let me know if you have any better suggestions. thank you.

Img. php

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/** * Created by PhpStorm. * User: MCtion * Date: 2015/5/14 0014 * Time: * Simple Image class library. all relative paths in this class are based on the website root directory. to modify them, modify the constant _ WEBROOT _. * Function: specify the text content to create an Image (Chinese characters not supported), create a verification code Image, create a thumbnail, and other functions to be continued * Method: * Style (array $ Options) sets the image Style. it is reset to the default Style before each setting. * Create_Img_Png (): create a PNG image. the relevant attributes are specified by the Style. * Create_Img_Jpeg (): Creates a JPEG image. the attributes are specified by the Style. * Create_Verify () creates a verification code Image. the relevant attributes are specified by the Style. * Get_Verify () obtains the created verification code value, which is MD5 encrypted. * Load_Img (string $ FilePath) loads the image and creates an image source for other methods to call. the FilePath is the relative path of the image. * Create_Thumb (string $ FileName, string $ FilePath): create a thumbnail of the image loaded by Load_Img (). FileName is the prefix of the saved image, and FilePath is the relative path of the saved image, does not contain file names (for example,/Uploads/images/Thumb /) */ If (! Defined ("_ WEBROOT _") define ("_ WEBROOT _", $ _ SERVER ['document _ root']); Class Img { Protected $ _ Img; // Image Source Protected $ _ FileImg; // the uploaded image source. Protected $ _ FileInfo; // array of loaded image information Protected $ _ PicInfo; // array of the width and height of the loaded image Protected $ _ Rand = 'abcdefghijkmnopqrstuvwxyzabcdefghjklmnopqrstuvwxyz1234567890'; // random factor Protected $ _ Code = ''; // verification Code Public $ Width = 300; // Default image Width Public $ Height = 80; // The default Height of the image Public $ BackgroundColor = "000000 "; Public $ Font = "/phps/Public/Font/ARIALNB. TTF"; // Default Font Public $ FontSize = 16; // Default Font size Public $ FontColor = "ffffff"; // Default Font color Public $ Content = "Test Word "; Public $ Align = "left "; Public $ Codes = 4; // Number of verification Codes Public $ Line = 6; // Number of interfering lines Public $ LoadErr = ''; // error message // Public function _ construct (){} /** Set Image attributes * @ Param array $ Options attribute array * @ Return $ this returns the object */ Public function Style ($ Options ){ $ This-> _ Re_Set (); Foreach ($ Options as $ K => $ V ){ If (in_array ($ K, array ('width', 'height', 'backgroundcolor', 'font', 'fontsize', 'fontcolor', 'content ', 'align ', 'Code', 'line', 'snow '))){ If ($ K = "BackgroundColor" | $ K = "FontColor "){ If (preg_match ("# [a-zA-Z0-9] {6}) #", $ V) $ this-> $ K = $ V; } Else { $ This-> $ K = $ V; } } } Return $ this; } /** * Resetting properties does not provide external access */ Protected function _ Re_Set (){ $ This-> Width = 100; $ This-> Height = 30; $ This-> BackgroundColor = "000000 "; $ This-> Font = "/phps/Public/Font/ARIALNB. TTF "; $ This-> FontSize = 16; $ This-> FontColor = "ffffff "; $ This-> Align = "left "; $ This-> Codes = 4; $ This-> Line = 6; } /** * Create an image source, add a background, and create an image * @ Param bool $ BGC specifies whether to create the background color and rectangular block. */ Protected function _ Create_Img_GB ($ BGC = True ){ $ This-> _ Img = imagecreatetruecolor ($ this-> Width, $ this-> Height); // create a back scene Source If ($ BGC ){ Preg_match ("# ([a-zA-Z0-9] {2}) ([a-zA-Z0-9] {2}) ([a-zA-Z0-9] {2}) #", $ this-> BackgroundColor, $ ColorArr); // separate the color values into three groups of hexadecimal numbers. $ Color = imagecolorallocate ($ this-> _ Img, hexdec ($ ColorArr [1]), hexdec ($ ColorArr [2]), hexdec ($ ColorArr [3]); // add the background color to the Img Image Source Imagefilledrectangle ($ this-> _ Img, 0, $ this-> Height, $ this-> Width, 0, $ Color); // create an image } } /** * Create a random verification code */ Protected function _ Create_Code (){ $ Len = strlen ($ this-> _ Rand)-1; For ($ I = 0; $ I <$ this-> Codes; $ I ++ ){ $ This-> _ Code. = $ this-> _ Rand [mt_rand (0, $ Len)]; } } /** * Writing a string to an image does not support Chinese characters. */ Protected function _ Write_Text (){ $ FontWidth = imagefontwidth ($ this-> FontSize); // Obtain the width of a character in the font size. Preg_match_all ('/(.)/us', $ this-> Content, $ TextArr); // separate the Content into an array to count the number of times. $ FontHeight = imagefontheight ($ this-> FontSize); // Obtain the font size height. $ X = ceil ($ this-> Width-($ FontWidth * count ($ TextArr [0])/2); // set the distance between the X axis and the left $ Y = ceil ($ this-> Height + $ FontHeight)/2); // you can specify the distance between the Y axis and the top margin. Preg_match ("# ([a-zA-Z0-9] {2}) ([a-zA-Z0-9] {2}) ([a-zA-Z0-9] {2}) #", $ this-> FontColor, $ ColorArr ); $ Color = imagecolorallocate ($ this-> _ Img, hexdec ($ ColorArr [1]), hexdec ($ ColorArr [2]), hexdec ($ ColorArr [3]); // set the text color Imagettftext ($ this-> _ Img, $ this-> FontSize, 0, $ X, $ Y, $ Color ,__ WEBROOT __. $ this-> Font, $ this-> Content); // write Content } /** * Write a verification code to the image. */ Protected function _ Write_Code (){ $ _ X = $ this-> Width/$ this-> Codes; // you can specify the aspect ratio. For ($ I = 0; $ I <$ this-> Codes; $ I ++) {// cyclically Codes times, each time a verification code value is generated $ Color = imagecolorallocate ($ this-> _ Img, mt_rand (0,156), mt_rand (0,156), mt_rand (0,156); // Color of the randomly generated verification code value Imagettftext ($ this-> _ Img, $ this-> FontSize, mt_rand (-30, 30), $ _ X * $ I + mt_rand (1, 5 ), $ this-> Height/1.3, $ Color ,__ WEBROOT __. $ this-> Font, $ this-> _ Code [$ I]); // generates a verification Code value. } } /** * Write interference lines to the image */ Protected function _ Write_Line () {// generates interference lines For ($ I = 0; $ I <$ this-> Line; $ I ++ ){ $ Color = imagecolorallocate ($ this-> _ Img, mt_rand (0,156), mt_rand (0,156), mt_rand (0,156 )); Imageline ($ this-> _ Img, mt_rand (0, $ this-> Width), mt_rand (0, $ this-> Height), mt_rand (0, $ this-> Width), mt_rand (0, $ this-> Height), $ Color ); } } /** * Set the image type to JPEG. */ Protected function _ Img_Jpeg (){ Header ('content-type: image/jpeg '); Imagejpeg ($ this-> _ Img ); Imagedestroy ($ this-> _ Img ); } /** * Set the image type to PNG. */ Protected function _ Img_Png (){ Header ('content-type: image/png '); Imagepng ($ this-> _ Img ); Imagedestroy ($ this-> _ Img ); } /** * Create a JPEG string image */ Public function Create_Img_Jpg (){ $ This-> _ Create_Img_GB (True ); $ This-> _ Write_Text (); $ This-> _ Img_Jpeg (); } /** * Create a PNG string image */ Public function Create_Img_Png (){ $ This-> _ Create_Img_GB (True ); $ This-> _ Write_Text (); $ This-> _ Img_Png (); } /** * Create a PNG image of the verification code */ Public function Create_Verify (){ $ This-> BackgroundColor = ''; For ($ I = 0; $ I <3; $ I ++ ){ $ This-& gt; BackgroundColor. = dechex (mt_rand (20,155 )); } $ This-> _ Create_Img_GB (True ); $ This-> _ Create_Code (); $ This-> _ Write_Line (); $ This-> _ Write_Code (); $ This-> _ Img_Png (); } /** * Obtain the MD5 encrypted verification code externally * @ Return string */ Public function Get_Verify (){ Return md5 ($ this-> _ Code ); } /** * Load an image file and obtain image-related information * @ Param string $ FilePath relative path of the image * @ Return $ this | the bool returns an object successfully; otherwise, FALSE is returned. */ Public function Load_Img ($ FilePath ){ $ FilePath = _ WEBROOT _. $ FilePath; If (! Is_file ($ FilePath )){ $ This-> LoadErr = "path error, file does not exist "; Return False; } $ This-> _ PicInfo = getimagesize ($ FilePath ); $ This-> _ FileInfo = pathinfo ($ FilePath ); Switch ($ this-> _ PicInfo [2]) { Case 1: $ this-> _ FileImg = imagecreatefromgif ($ FilePath); break; Case 2: $ this-> _ FileImg = imagecreatefromjpeg ($ FilePath); break; Case 3: $ this-> _ FileImg = imagecreatefrompng ($ FilePath); break; Default: $ this-> LoadErr = "type error, unsupported image type"; Return False; } Return True; } /** * Create a thumbnail * @ Param string $ prefix of the image name saved by FileName * @ Param string $ FilePath: save the relative path of the image * @ Return mixed returns the information array of the generated image. */ Public function Create_Thumb ($ FileName, $ FilePath ){ $ SavePath = _ WEBROOT _. $ FilePath; If (! File_exists ($ SavePath )){ Mkdir ($ savepath, 0777, true ); } $ FileName = $ FileName. date ("YmdHis"). rand (100,999). '.'. $ this-> _ FileInfo ['extension']; $ FilePath = $ FilePath. $ FileName; $ SavePath = $ SavePath. $ FileName; $ This-> _ Create_Img_GB (False ); Imagecopyresampled ($ this-> _ Img, $ this-> _ FileImg, 0, 0, 0, $ this-> Width, $ this-> Height, $ this-> _ PicInfo [0], $ this-> _ PicInfo [1]); Switch ($ this-> _ PicInfo [2]) { Case 1: imagegif ($ this-> _ Img, $ SavePath); break; Case 2: imagejpeg ($ this-> _ Img, $ SavePath); break; Case 3: imagepng ($ this-> _ Img, $ SavePath); break; } $ FIleInfo ['filename'] = $ FileName; $ FIleInfo ['filepath'] = $ FilePath; Return $ FIleInfo; } }

Example

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$ Img = new Img (); $ Options ['width'] = 300; $ Options ['body'] = 100; $ Options ['content'] = "Test Create Img "; $ Options ['fontcolor'] = "FF0000 "; $ Options ['backgroundcolor'] = "AAAAAA "; $ Img-> Style ($ Options)-> Create_Img_Jpg (); If ($ Img-> Load_Img ("/Public/images/ad1.png ")){ $ FileInfo = $ Img-> Style (array ('width' => 30, 'height' => 30)-> Create_Thumb ("Thumb ", "/Uploads/images /"); Var_dump ($ FileInfo ); } Else { Die ("failed to load image,". $ Img-> LoadErr ); }

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Ghost has simply written a PHP image processing class library. although it has few functions, it is not very advanced at present. you can fill it out later, or which one...