In the Web application is often used to generate pictures of this function, in the PHP tutorial to create pictures need to support the GD library to create graphics, with this graphic function, we can easily generate thumbnails, verification code, to add watermarks and so on. In PHP to install the GD library to normal operation to create a picture function, the following methods, in the win system, find php.ini put; Extension=php_gd2.dll front ";" Go, and back up Apache OK. Here we look at the example of PHP ...
Just install some third-party library files and have a certain degree of geometric knowledge, you can use PHP to create and process images. Creating a dynamic image with PHP is fairly easy. Below, I will detail how to achieve. Before using the basic image creation function, you need to install the GD library file. If you want to use JPEG-related image creation functions, you also need to install jpeg-6b, and you must install t1lib if you want to use Type 1 fonts in your images. In the establishment of the image creation environment, but also need to do some quasi ...
Three PHP tutorial Chinese verification code generation and transfer method Generate Chinese verification code in PHP must be generated and generated verification verification code is not the same operation, because gd function only accepts utf8 format encoded text, so use php to generate Chinese verification Before the first code to be encoded conversion, operation iconph icon can be an instance of PHP. * / $ ch_str = "Chinese characters you want to generate Chinese characters"; $ str = array (); for ($ i = 0; $ i <strlen ($ ch_s ...
In the php tutorial to generate high-definition images must be used imagecreatetruecolor function to do, see below its usage imagecreatetruecolor (int x, int y) to create a black image of size and y, and its examples did not use Instead of adding the background color to the generated pixel, a color of the drawing is created directly using imagecolorallocate () * / / / Create image $ im = imagecreatetruecolor (...
php tutorial image upload code (with thumbnails and add watermarking function) This picture upload source code is a can upload pictures and also has to upload images generated thumbnails and watermarking Oh, can be said to be a perfect Image upload category Oh. class upfile {public $ filepath = "www.jzread.com/"; / / upload files stored in the folder public $ filesize = 10 ...
Php tutorial pattern verification code generation code and include ajax verification example application previously written verification code program is to provide the source code, but did not really figure verification code generated to verify the instance, this time we have a complete example of PHP validation It's There are 3 files: authcode.php ----- verification code generation php file authcode.html ----- front display page dealauthcode.php ----- ajax submitted to the background processing to determine the verification code is correct Processing page ...
Php tutorial pattern verification code generation code and include ajax verification example application previously written verification code program is to provide the source code, but did not really figure verification code generated to verify the instance, this time we have a complete example of PHP validation It's There are 3 files: authcode.php ----- verification code generation php file authcode.html ----- front display page dealauthcode.php ----- ajax submitted to the background processing to determine the verification code is correct Processing page ...
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