PHP creates image thumbnails, watermarks, and fonts. php website creation tutorial: php website background creation tutorial: phpcms template creation

Make an image. php: PHP creates image thumbnails, watermarks, and fonts. The following is a Class I provide. The three functions are encapsulated below: imgSrc $ imgS below is a Class I provide, which encapsulates these three features:

 ImgSrc = $ imgSrc; $ this-> init ();}/*** initialization operation */private function init () {// Obtain the image information (obtain the basic information of the image you want to process through the method provided by the GD library) $ this-> info = getimagesize ($ this-> imgSrc ); // Obtain the image type by using the image number $ this-> type = image_type_to_extension ($ this-> info [2], false ); // create an image with the same image type in the memory $ fun = "imagecreatefrom {$ this-> type }"; // copy the image to the memory $ this-> image = $ fun ($ this-> imgSrc ); $ this-> showOrSaveFunc = "image {$ this-> type}";}/*** add a font to the image * @ param $ fo Ntfile font file path * @ param $ text content * @ param $ red component * @ param $ green component * @ param $ blue component * @ param $ alpha transparency *@ param $ angle offset angle * @ param $ size font size * @ param $ x distance from the left * @ param $ y distance from the right */public function addFont ($ fontfile, $ text, $ red, $ green, $ blue, $ alpha, $ angle, $ size, $ x, $ y) {$ color = imagecolorallocatealpha ($ this-> image, $ red, $ green, $ blue, $ alpha); imagettftext ($ this-> image, $ size, $ angle, $ X, $ y, $ color, $ fontfile, $ text);}/*** browser output image Type */private function setOutputHeader () {header ("Content-Type: ". $ this-> info ['Mime ']);}/*** output the image to the browser */public function outputimagetobroader () {$ this-> setOutputHeader (); $ this-> excShowOrSaveFunc ($ this-> showOrSaveFunc);}/*** output or save image */private function excShowOrSaveFunc ($ type, $ file = '') {if ($ file = '') {$ type ($ this-> image);} else {$ type ($ this-> image, $ file) ;}}/*** Save the file to the local * @ param local path * @ param file name */public function outputImageToStorage ($ filepath, $ filename) {$ this-> setOutputHeader (); $ this-> excShowOrSaveFunc ($ this-> showOrSaveFunc, $ filepath. $ filename. '. '. $ this-> type );} /*** add a watermark to the image * @ param $ waterMarkPath watermark image path * @ param $ dst_x distance from the watermark on the left of the source image * @ param $ dst_y distance from the watermark on the top of the source image * @ param $ pct watermark transparency */public function addWaterMark ($ waterMarkPath, $ dst_x, $ dst_y, $ pct ){ $ WaterInfo = getimagesize ($ waterMarkPath); $ waterType = image_type_to_extension ($ waterInfo [2], false); $ waterFun = "imagecreatefrom {$ waterType }"; $ waterMarkImage = $ waterFun ($ waterMarkPath); // imagecopymerge (dst_im, src_im, dst_x, dst_y, src_x, src_y, src_w, src_h, pct) // pct transparency imagecopymerge ($ this-> image, $ waterMarkImage, $ dst_x, $ dst_y, 0, 0, $ waterInfo [0], $ waterInfo [1], $ pct); imagedestroy ($ waterMar KImage);}/*** generate image thumbnails * @ param $ mWidth width to be compressed */public function createThumbnail ($ mWidth) {$ width = $ this-> info [0]; $ height = $ this-> info [1]; if ($ mWidth >=$ width) {return ;} $ mHeight = $ height * $ mWidth/$ width; // 1. create a true color image with a width of 300 and a height of 200 in the memory $ imageThumb = imagecreatetruecolor ($ mWidth, $ mHeight); // 2. the core step is to copy the source image to the new positive color image and compress it according to a certain proportion. // imagecopyresampled (dst_image, src_image, dst_x, dst_y, src_x, src_y, dst_w, Dst_h, src_w, src_h) imagecopyresampled ($ imageThumb, $ this-> image, 0, 0, 0, 0, $ mWidth, $ mHeight, $ width, $ height ); $ this-> image = $ imageThumb;}/** destroy image resources */public function destroy () {imagedestroy ($ this-> image) ;}}?>

The usage is as follows:

 addFont("consola.ttf", "raid", 0, 0, 0, 50, 0, 45, 20, 20);$imageHelper->addWaterMark('pic2.jpg', 0, 0, 50);*/$imageHelper->createThumbnail(300);// $imageHelper->outputImageToBrowser();$imageHelper->outputImageToStorage('','testImageHelperAddFont');$imageHelper->destroy(); ?>

The above section describes how to use PHP to create image thumbnails, add watermarks, and add fonts, including image production and php Content. I hope my friends who are interested in PHP tutorials will be helpful.