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header ("Content-Type: image/PNG"); $ IMG = imagecreate (100,35 ); $ bgcolor = imagecolorallocate ($ IMG, 0); $ Red = imagecolorallocate ($ IMG, 0 ); $ bgcolortrans = imagecolortransparent ($ IMG, $ bgcolor); imagestring ($ IMG, 5, 10, "png php"

/*** Gd image mask** @ Copyright ugia.cn*/Function imagemask (& $ im, $ x1, $ y1, $ x2, $ y2, $ deep){For ($ x = $ x1; $ x {For ($ y = $ y1; $ y {$ Color = imagecolorat ($ im, $ x + round ($ deep/2), $ y + round ($ deep/2 ));Imagefilledrectangle ($

When you need to upload images to a regular website, you often need to add the LOGO watermark of your website to the image. So how to implement this step? First, let's take a look at the principles of adding watermarks to PHP images. Create an image

Php object-oriented and process-oriented methods add text watermarks to images, Currently, most PHP programmers use process-oriented methods, because parsing WEB pages is very "procedural" (from one tag to another ). It is natural to Process Code

Currently, many websites use verification codes to prevent users from automatically registering, logging on, and bumping through robots. The so-called verification code is to generate an image with a string of randomly generated numbers or symbols,

Nowadays, more and more people prefer to access the Internet, and more people have their own personal homepages. With the emergence of various automated software tools, making web pages easier and easier. However, because special effects are

The program that uses PHP to add a watermark to the uploaded image is to create a graph by determining the file type, copy it to the original image, fill it with and create a rectangle for writing it to imagestring () or determine the watermark type

Use PHP to implement the login verification code function. Use PHP to implement the login verification code function :? Phpsession_start (); session_register (login_check_number); I saw the verification code on chianren last night and considered it.

To improve website security, verification codes are essential for login. A simple and exquisite PHP Verification Code came into being! This verification code is simple and elegant, and the source code is simple. You can customize and modify the

Php prompts Fatalerror: Calltoundefinedfunctionimagecreate (). In php, the imagecreate function is a graphic processing function. it is mainly used to create a palette-based image, then, we can create some graphics, numbers, and characters. in php,

Php verification code generation detailed tutorial. This article provides a php Tutorial to generate a verification code. the previous section describes how to generate and call the verification core code .? Phpheader (content-type: image this

Code for generating the php stock K-line chart. This program implements the php bar chart. its design philosophy is: first, use imagecreate () to generate a blank image. The program implementation is as follows: two different colors are required, A

Php generates the program code for the snowflake background verification code. This article introduces the program code for generating the snowflake background verification code in php. if you need it, you can refer to it. The verification code is

PHP mobile phone number generation Image instance program. We have worked on a recruitment website before, so we need to make sure that we cannot collect the mobile phone numbers and email addresses of our customers, so we will use php to implement

This article mainly introduces the php method for adding stroke and mosaic to images. it is of practical value to use the custom functions imagemask and imagetextouter to add mosaic and text stroke to images, for more information about how to add

: This article mainly introduces how to use php to add text watermarks to images-implementation of object-oriented and process-oriented methods. if you are interested in PHP tutorials, refer. 1: Process-oriented compiling method // Specify the

Using the GD2 function to implement chart analysis product data (PHP graphic image Typical application tutorial 6) using charts to analyze product data information is the most commonly used data management model of large and medium-sized enterprises,

I read some articles about the verification code some time ago, that is, to generate an image with a string of randomly generated numbers or symbols, and add some interference pixels to the image to prevent OCR ), the user can identify the

A simple php verification code program. There are many php verification code programs generated on the internet. I will share with you the code of a super-good php verification code. if you need it, please refer to it. Verification code recognition