PHP-image compression

PHP-Image Compression Method 1:

 $ Dw) {$ Par = $ Dw/$ width; $ width = $ Dw; $ height = $ height * $ Par; IF ($ height> $ Dh) {$ Par = $ Dh/$ height; $ height = $ Dh; $ width = $ width * $ Par;} ElseIF ($ height> $ Dh) {$ Par = $ Dh/$ height; $ height = $ Dh; $ width = $ width * $ Par; IF ($ width> $ Dw) {$ Par = $ Dw/$ width; $ width = $ Dw; $ height = $ height * $ Par ;}} Else {$ width = $ width; $ height = $ height ;}$ nImg = ImageCreateTrueColor ($ width, $ height); # Create a true color canvas ImageCopyReSampled ($ nImg, $ Img, 0, 0, $ width, $ height, $ w, $ h); # ressample and copy some images and resize ImageJpeg ($ nImg, $ Image ); # Return True to output the image to a browser or file in JPEG format; # if a thumbnail is generated,} Else {$ w = ImagesX ($ Img ); $ h = ImagesY ($ Img); $ width = $ w; $ height = $ h; $ nImg = ImageCreateTrueColor ($ Dw, $ Dh ); IF ($ h/$ w> $ Dh/$ Dw) {# The height is relatively large $ width = $ Dw; $ height = $ h * $ Dw/$ w; $ IntNH = $ height-$ Dh; ImageCopyReSampled ($ nImg, $ Img, 0,-$ IntNH/1.8, 0, 0, $ Dw, $ height, $ w, $ h);} Else {# relatively wide $ height = $ Dh; $ width = $ w * $ Dh/$ h; $ IntNW = $ width-$ Dw; imagecopyresampleds ($ nImg, $ Img,-$ IntNW/1.8, 0, 0, 0, $ width, $ Dh, $ w, $ h);} ImageJpeg ($ nImg, $ Image); Return True ;}}?>
 

Method 2:

PHP image compression class
 Array ("output" => "imagejpeg"), "gif" => array ("output" => "imagegif "), "png" => array ("output" => "imagepng"), "wbmp" => array ("output" => "image2wbmp "), "jpeg" => array ("output" => "imagejpeg");/*** constructor */function ThumbHandler () {$ this-> mask_font_color = "# ffffff"; $ this-> font = 2; $ this-> font_size = 12 ;} /*** retrieve the image width */function getImgWidth ($ src) {return imagesx ($ src);}/*** retrieve the image height */function getImgHeigh T ($ src) {return imagesy ($ src);}/*** sets the image generation path ** @ param string $ src_img image generation path */function setSrcImg ($ src_img, $ img_type = null) {if (! File_exists ($ src_img) {die ("image does not exist");} if (! Empty ($ img_type) {$ this-> img_type = $ img_type;} else {$ this-> img_type = $ this-> _ getImgType ($ src_img );} $ this-> _ checkValid ($ this-> img_type); // The file_get_contents function requires the php version> 4.3.0 $ src = ''; if (function_exists (" file_get_contents ")) {$ src = file_get_contents ($ src_img);} else {$ handle = fopen ($ src_img, "r"); while (! Feof ($ handle) {$ src. = fgets ($ fd, 4096) ;}fclose ($ handle) ;}if (empty ($ src) {die ("Image source is empty ");} $ this-> h_src = @ ImageCreateFromString ($ src); $ this-> src_w = $ this-> getImgWidth ($ this-> h_src ); $ this-> src_h = $ this-> getImgHeight ($ this-> h_src );} /*** set the image generation path ** @ param string $ dst_img image generation path */function setDstImg ($ dst_img) {$ arr = explode ('/', $ dst_img ); $ last = array_pop ($ arr); $ path = implode ('/', $ Arr); $ this-> _ mkdirs ($ path); $ this-> dst_img = $ dst_img ;} /*** set the image display quality ** @ param string $ n quality */function setImgDisplayQuality ($ n) {$ this-> img_display_quality = (int) $ n ;} /*** set the image generation quality ** @ param string $ n quality */function setImgCreateQuality ($ n) {$ this-> img_create_quality = (int) $ n ;} /*** set the text watermark ** @ param string $ word watermark text * @ param integer $ font watermark font * @ param string $ color watermark font color */function setMa SkWord ($ word) {$ this-> mask_word. = $ word;}/*** set the font color ** @ param string $ color font color */function setMaskFontColor ($ color = "# ffffff ") {$ this-> mask_font_color = $ color;}/*** set the watermark font ** @ param string | integer $ font */function setMaskFont ($ font = 2) {if (! Is_numeric ($ font )&&! File_exists ($ font) {die ("the font file does not exist") ;}$ this-> font = $ font ;}/ *** set the text font size, valid only for truetype fonts */function setMaskFontSize ($ size = "12") {$ this-> font_size = $ size ;} /*** set the image watermark ** @ param string $ img watermark image source */function setMaskImg ($ img) {$ this-> mask_img = $ img ;} /*** set the watermark horizontal offset ** @ param integer $ x horizontal offset */function setMaskOffsetX ($ x) {$ this-> mask_offset_x = (int) $ x ;} /*** set the watermark vertical offset ** @ param integer $ y vertical offset Volume */function setMaskOffsetY ($ y) {$ this-> mask_offset_y = (int) $ y;}/*** specify the watermark position ** @ param integer $ position, 1: upper left, 2: lower left, 3: upper right, 0/4: lower right */function setMaskPosition ($ position = 0) {$ this-> mask_position = (int) $ position ;} /*** set the image merging degree ** @ param integer $ n merging degree */function setMaskImgPct ($ n) {$ this-> mask_img_pct = (int) $ n ;} /*** set the text merging degree ** @ param integer $ n merging degree */function setMaskTxtPct ($ n) {$ this-> mask_t Xt_pct = (int) $ n;}/*** set the thumbnail border ** @ param (type) (parameter name) (description) */function setDstImgBorder ($ size = 1, $ color = "#000000") {$ this-> img_border_size = (int) $ size; $ this-> img_border_color = $ color ;} /***** horizontal flip */function flipH () {$ this-> _ flip_x ++;}/*** vertical flip */function flipV () {$ this-> _ flip_y ++;}/*** sets the cut type ** @ param (type) (parameter name) (description) */function setCutType ($ type) {$ this-> cut_type = (int) $ type;}/*** set Image cropping ** @ Param integer $ width rectangular cut */function setRectangleCut ($ width, $ height) {$ this-> fill_w = (int) $ width; $ this-> fill_h = (int) $ height;}/*** set the starting coordinate point of the source image cut ** @ param (type) (parameter name) (description) */function setSrcCutPosition ($ x, $ y) {$ this-> src_x = (int) $ x; $ this-> src_y = (int) $ y ;}/ *** create an image, main function * @ param integer $ a when the second parameter is missing, this parameter is used as a percentage, * otherwise, it is used as the width value * @ param integer $ B. The scaled height of the image */function createImg ($ a, $ B = null) {$ num = f Unc_num_args (); if (1 = $ num) {$ r = (int) $ a; if ($ r <1) {die ("image scaling ratio cannot be less than 1") ;}$ this-> img_scale = $ r; $ this-> _ setNewImgSize ($ r );} if (2 = $ num) {$ w = (int) $ a; $ h = (int) $ B; if (0 = $ w) {die ("target width cannot be 0");} if (0 = $ h) {die ("target height cannot be 0 ");} $ this-> _ setNewImgSize ($ w, $ h);} if ($ this-> _ flip_x % 2! = 0) {$ this-> _ flipH ($ this-> h_src);} if ($ this-> _ flip_y % 2! = 0) {$ this-> _ flipV ($ this-> h_src);} $ this-> _ createMask (); $ this-> _ output (); // release if (imagedestroy ($ this-> h_src) & imagedestroy ($ this-> h_dst) {Return true;} else {Return false ;}} /*** generate the watermark. two methods are called to generate the watermark text and watermark image. */function _ createMask () {if ($ this-> mask_word) {// Obtain the font information $ this-> _ setFontInfo (); if ($ this-> _ isFull () {die ("the watermark text is too large ");} else {$ this-> h_dst = imagecreatetruecolor ($ this-> dst_w, $ this-> d St_h); $ white = ImageColorAllocate ($ this-> h_dst, 255,255,255); imagefilledrectangle ($ this-> h_dst, $ this-> dst_w, $ this-> dst_h, $ white); // fill in the background color $ this-> _ drawBorder (); imagecopyresampled ($ this-> h_dst, $ this-> h_src, $ this-> start_x, $ this-> start_y, $ this-> src_x, $ this-> src_y, $ this-> fill_w, $ this-> fill_h, $ this-> copy_w, $ this-> copy_h); $ this-> _ createMaskWord ($ this-> h_dst) ;}} if ($ this-> mask_img) {$ t His-> _ loadMaskImg (); // Obtain the width and height if ($ this-> _ isFull () when loading ()) {// Copy the watermark generated on the source image $ this-> _ createMaskImg ($ this-> h_src); $ this-> h_dst = imagecreatetruecolor ($ this-> dst_w, $ this-> dst_h); $ white = ImageColorAllocate ($ this-> h_dst, 255,255,255); imagefilledrectangle ($ this-> h_dst, $ this-> dst_w, $ this-> dst_h, $ white); // fill in the background color $ this-> _ drawBorder (); imagecopyresampled ($ this-> h_dst, $ this-> h_src, $ this-> start_x, $ this-> Start_y, $ this-> src_x, $ this-> src_y, $ this-> fill_w, $ this-> start_y, $ this-> copy_w, $ this-> copy_h );} else {// create a new graph and copy $ this-> h_dst = imagecreatetruecolor ($ this-> dst_w, $ this-> dst_h); $ white = ImageColorAllocate ($ this-> h_dst, 255,255,255); imagefilledrectangle ($ this-> h_dst, $ this-> dst_w, $ this-> dst_h, $ white ); // fill in the background color $ this-> _ drawBorder (); imagecopyresampled ($ this-> h_dst, $ this-> h_src, $ this-> sta Rt_x, $ this-> start_y, $ this-> src_x, $ this-> src_y, $ this-> fill_w, $ this-> fill_h, $ this-> copy_w, $ this-> copy_h); $ this-> _ createMaskImg ($ this-> h_dst) ;}} if (empty ($ this-> mask_word) & amp; empty ($ this-> mask_img) {$ this-> h_dst = imagecreatetruecolor ($ this-> dst_w, $ this-> dst_h ); $ white = ImageColorAllocate ($ this-> h_dst, 255,255,255); imagefilledrectangle ($ this-> h_dst, $ this-> dst_w, $ this-> dst_h, $ white ); // Fill in the background color $ this-> _ drawBorder (); imagecopyresampled ($ this-> h_dst, $ this-> h_src, $ this-> start_x, $ this-> start_y, $ this-> src_x, $ this-> src_y, $ this-> fill_w, $ this-> fill_h, $ this-> copy_w, $ this-> copy_h );}} /*** draw border */function _ drawBorder () {if (! Empty ($ this-> img_border_size) {$ c = $ this-> _ parseColor ($ this-> img_border_color); $ color = ImageColorAllocate ($ this-> h_src, $ c [0], $ c [1], $ c [2]); imagefilledrectangle ($ this-> h_dst, 0,0, $ this-> dst_w, $ this-> dst_h, $ color); // fill in the background color }}