Add watermarks to images and generate scaling charts using PHP

Add watermarks to images and generate scaling charts using PHP

1. add a watermark to the image 2. generate a new scaling chart Class Image { // Watermark configuration items Private $ wateon; Private $ waterImg; Private $ waterPos; Private $ waterPct; Private $ waterText; Private $ waterFont; Private $ waterTextSize; Private $ waterTextColor; Private $ qua; // Thumbnail configuration items Private $ thumbWidth; Private $ thumbHeight; Private $ thumbType; Private $ thumbEndfix; // Constructor Public function _ construct (){ $ This-> wateon = C ("WATER_ON "); $ This-> waterImg = C ("WATER_IMG "); $ This-> waterPos = C ("WATER_POS "); $ This-> waterPct = C ("WATER_PCT "); $ This-> waterText = C ("WATER_TEXT "); $ This-> waterFont = C ("WATER_FONT "); $ This-> waterTextSize = C ("WATER_TEXT_SIZE "); $ This-> waterTextColor = C ("WATER_TEXT_COLOR "); $ This-> qua = C ("WATER_QUA "); // Scaling chart $ This-> thumbWidth = C ("THUMB_WIDTH "); $ This-> thumbHeight = C ("THUMB_HEIGHT "); $ This-> thumbType = C ("THUMB_TYPE "); $ This-> thumbEndFix = C ("THUMB_ENDFIX "); } /* * Verify that the image is valid. */ Private function check ($ img ){ Return is_file ($ img) & getimagesize ($ img) & extension_loaded ("gd "); } /* * Scaling chart * @ Param string $ img Source image * @ Param string $ the image stored after the outFile scaling rate * @ Param int $ thumbWidth shrinkage chart width * @ Param int $ thumbHeight shrinkage chart height * @ Param int $ thumbType scaling */ Public function thumb ($ img, $ outFile = "", $ thumbWidth = "", $ thumbHeight = "", $ thumbType = ""){ If (! $ This-> check ($ img )){ Return false; } // Scaling chart processing method $ ThumbType = $ thumbType? $ ThumbType: $ this-> thumbType; // Scale chart width $ ThumbWidth = $ thumbWidth? $ ThumbWidth: $ this-> thumbWidth; // Scale chart height $ ThumbHeight = $ thumbHeight? $ ThumbHeight: $ this-> thumbHeight; // Obtain the source image information $ ImgInfo = getimagesize ($ img ); // Original image width $ ImgWidth = $ imgInfo [0]; // Original image height $ ImgHeight = $ imgInfo [1]; // Obtain the source image type $ Imgtype = image_type_to_extension ($ imgInfo [2]); // Obtain the size of the source image and the size of the thumbnail based on different scaling methods) $ Thumb_size = $ this-> thumbsize ($ imgWidth, $ imgHeight, $ thumbWidth, $ thumbHeight, $ thumbType ); // Create the source image $ Func = "imagecreatefrom". substr ($ imgtype, 1); // variable function $ ResImg = $ func ($ img ); // Create a scaling chart If ($ imgtype = ". gif "){ $ Res_thumb = imagecreate ($ thumb_size [2], $ thumb_size [3]); } Else { $ Res_thumb = imagecreatetruecolor ($ thumb_size [2], $ thumb_size [3]); } Imagecopyresized ($ res_thumb, $ resImg, 0, 0, 0, $ thumb_size [2], $ thumb_size [3], $ thumb_size [0], $ thumb_size [1]); $ FileInfo = pathinfo ($ img); // File information $ OutFile = $ outFile? $ OutFile: $ fileInfo ['filename']. $ this-> thumbEndFix. $ fileInfo ['extension']; // file name $ OutFile = $ fileInfo ["dirname"]. "/". $ outFile; // add the Directory $ Func = "image". substr ($ imgtype, 1 ); $ Func ($ res_thumb, $ outFile ); Return $ outFile; } Private function thumbSize ($ imgWidth, $ imgHeight, $ thumbWidth, $ thumbHeight, $ thumbType ){ // Scale chart size $ W = $ thumbWidth; $ H = $ thumbHeight; // Original image size $ Img_w = $ imgWidth; $ Img_h = $ imgHeight; Switch ($ thumbType ){ Case 1: // Fixed width and auto-increment height $ H = $ w/$ imgWidth * $ imgHeight; Break; Case 2: // fixed height, self-width $ W = $ h/$ imgHeight * $ imgWidth; Break; Case 3: If ($ imgHeight/$ thumbHeight> $ imgWidth/$ thumbWidth ){ $ Img_h = $ imgWidth/$ thumbWidth * $ thumbHeight; } Else { $ Img_w = $ imgHeight/$ thumbHeight * $ thumbWidth; } } Return array ($ img_w, $ img_h, $ w, $ h ); } /* * @ Param string $ img Source image * @ Param string $ image generated after adding the watermark to outImg * @ Param int $ pos Watermark Position * @ Param int $ pct transparency * @ Param text $ text watermark text * @ Param string $ waterImg watermark image */ Public function water ($ img, $ outImg = null, $ pos = "", $ pct = "", $ text = "", $ waterImg = "", $ textColor = ""){ If (! $ This-> check ($ img )){ Return false; } // The image generated after the watermark is added $ OutImg = $ outImg? $ OutImg: $ img; // Watermark Position $ Pos = $ pos? $ Pos: $ this-> waterPos; // Transparency $ Pct = $ pct? $ Pct: $ this-> waterPct; // Watermark text $ Text = $ text? $ Text: $ this-> waterText; // Watermark image $ WaterImg = $ waterImg? $ WaterImg: $ this-> waterImg; // Verify the watermark image $ WaterImgOn = $ this-> check ($ waterImg ); // Watermark text color $ TextColor = $ textColor? $ TextColor: $ this-> waterTextColor; // Original image information $ ImgInfo = getimagesize ($ img ); // Original image width $ ImgWidth = $ imgInfo [0]; // Original image height $ ImgHeight = $ imgInfo [1]; Switch ($ imgInfo [2]) { Case 1: $ ResImg = imagecreatefromgif ($ img ); Break; Case 2: $ ResImg = imagecreatefromjpeg ($ img ); Break; Case 3: $ ResImg = imagecreatefrompng ($ img ); Break; } If ($ waterImgOn) {// watermark image valid // Watermark information $ WaterInfo = getimagesize ($ waterImg ); // Watermark width $ WaterWidth = $ waterInfo [0]; // Watermark height $ WaterHeight = $ waterInfo [1]; // Create different types of gif jpeg png based on different situations $ W_img = null; Switch ($ waterInfo [2]) { Case 1: $ W_img = imagecreatefromgif ($ waterImg ); Break; Case 2: $ W_img = imagecreatefromjpeg ($ waterImg ); Break; Case 3: $ W_img = imagecreatefrompng ($ waterImg ); } } Else {// The watermark image is invalid. use a text watermark. If (empty ($ text) | strlen ($ textColor )! = 7 ){ Return false; } // Obtain the text watermark box information $ TextInfo = imagettfbbox ($ this-> waterTextSize, 0, $ this-> waterFont, $ text ); // Text information width $ TextWidth = $ textInfo [2]-$ textInfo [6]; // Text height $ TextHeight = $ textInfo [3]-$ textInfo [7]; } // Watermark Position $ X = $ y = 20; Switch ($ pos ){ Case 1: Break; Case 2: $ X = ($ imgWidth-$ waterWidth)/2; Break; Case 3: $ Y = $ imgWidth-$ waterWidth-10; Break; Case 4: $ X = ($ imgHeight-$ waterHeight)/2; Break; Case 5: $ X = ($ imgWidth-$ waterWidth)/2; $ Y = ($ imgHeight-$ waterHeight)/2; Break; Case 6: $ X = $ imgWidth-$ waterWidth-10; $ Y = ($ imgHeight-$ waterHeight)/2; Break; Case 7: $ X = $ imgHeight-$ waterHeight-10; Break; Case 8: $ X = ($ imgWidth-$ waterWidth)/2; $ Y = $ imgHeight-$ waterHeight-10; Break; Case 9: $ X = $ imgWidth-$ waterWidth-10; $ Y = $ imgHeight-$ waterHeight-10; Break; Default: $ X = mt_rand (20, $ imgWidth-$ waterWidth ); $ Y = mt_rand (20, $ imgHeight-$ waterHeight ); } If ($ waterImgOn) {// add a watermark as an image when the watermark image is valid If ($ waterInfo [2] = 3 ){ Imagecopy ($ resImg, $ w_img, $ x, $ y, 0, $ waterWidth, $ waterHeight ); } Else { Imagecopymerge ($ resImg, $ w_img, $ x, $ y, 0, $ waterInfo, $ waterHeight, $ pct ); } } Else {// The watermark image is invalid. add it as a text watermark. $ Red = hexdec (substr ($ this-> waterTextColor, 1, 2 )); $ Greem = hexdec (substr ($ this-> waterTextColor, 3, 2 )); $ Blue = hexdec (substr ($ this-> waterTextColor, 5, 2 )); $ Color = imagecolorallocate ($ resImg, $ red, $ greem, $ blue ); Imagettftext ($ resImg, $ this-> waterTextSize, 0, $ x, $ y, $ color, $ this-> waterFont, $ text ); } // Output image Switch ($ imgInfo [2]) { Case 1: Imagegif ($ resImg, $ outImg ); Break; Case 2: Imagejpeg ($ resImg, $ outImg ); Break; Case 3: Imagepng ($ resImg, $ outImg ); Break; } // Garbage collection If (isset ($ resImg )){ Imagedestroy ($ resImg ); } If (isset ($ w_img )){ Imagedestroy ($ w_img ); } Return true; } } ?> Return array ( // Watermark processing "WATER_ON" => 1, // watermark switch "WATER_IMG" => "./data/logo.png", // watermark image "WATER_POS" => 9, // Watermark Position "WATER_PCT" => 80, // watermark transparency "WATER_TEXT" => "http://www.caoxiaobin.cn ", "WATER_FONT" => "./data/simsunb. ttf", // watermark font "WATER_TEXT_COLOR" => "#333333", // hexadecimal representation of text color "WATER_TEXT_SIZE" => 16, // text size "WATER_QUA" => 80, // Image compression ratio // Thumbnail "THUMB_WIDTH" => 150, // scaling chart width "THUMB_HEIGHT" => 150, // Thumbnail height "THUMB_TYPE" => 1, // fixed width of thumbnail processing 1, fixed height auto-Increment 2, fixed width auto-increment // the size of the thumbnail remains unchanged, and the source image is cropped "THUMB_ENDFIX" => "_ thmub" // Thumbnail suffix ); ?> /* * Case-insensitive data key detection */ Function array_key_exists_d ($ key, $ arr ){ $ _ Key = strtolower ($ key ); Foreach ($ arr as $ k =>$ v ){ If ($ _ key = strtolower ($ k )){ Return true; } } } /* * Recursively change the KEY (KEY name) of the array) * @ Param array; * @ Stat int 0 lowercase 1 uppercase */ Function array_change_key_case_d ($ arr, $ stat = 0 ){ $ Func = $ stat? "Strtoupper": "strtolower "; $ _ NewArr = array (); If (! Is_array ($ arr) | empty ($ arr )){ Return $ _ newArr; } Foreach ($ arr as $ k =>$ v ){ $ _ K = $ func ($ k); // convert the case sensitivity of a KEY using a variable function $ _ NewArr [$ _ k] = is_array ($ v )? Array_change_key_case_d ($ v): $ v; } Return $ _ newArr; } /* * Read and set configuration items * @ Param $ name the void configuration item name. if not specified, all configuration items are returned. * @ Param $ value the value of the void configuration item * @ Param $ value: false null. only the $ name value is used. */ Function C ($ name = null, $ value = null ){ Static $ config = array (); // static variable $ config stores all configuration items If (is_null ($ name )){ Return $ config; } // If $ name is an array If (is_array ($ name )){ Return $ config = array_merge ($ config, array_change_key_case_d ($ name, 1 )); } // If $ name is a string, no value in $ value indicates that the value of the configuration item is obtained, and a value indicates that the configuration item is changed. If (is_string ($ name )){ $ Name = strtoupper ($ name ); // Obtain the configuration item value If (is_null ($ value )){ Return array_key_exists_d ($ name, $ config )? $ Config [$ name]: null; } Else { // Set the value $ Config [$ name] = $ value; Return true; } } }

PHP, scaling chart