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PHP Introductory Training Tutorials A nice PHP verification codeHow to write a nice PHP verification code? Brother even PHP training small to share a piece of code to everyone:Class imagecode{Private $width;Private $height;Private $counts;Private

PHP File Upload $ _ FILES ['file'] ['error'] Starting from PHP 4.2.0, PHP will return a corresponding error along with the file information array Code . This code can be found in the error field of the file array generated during file upload, that

This article is a detailed analysis of php verification code (tilt, sine interference line, pasting, rotating). If you need a friend, I haven't written a post for a long time. I have been busy with new projects. Recently, I have been trying to

In php, adding watermarks to Chinese characters requires some simple processing. one is to convert characters into gbk, and the other is to load Chinese fonts, with these two conditions, adding a Chinese watermark to the image is simple. Example 1

Ask questions about generating thumbnails in php! The following code can generate image thumbnails, but the image quality will be reduced. who can help modify the image to control the quality of the generated image? /* * Function: PHP image

Recently, I found several random SQL queries in mysql on the Internet. I recorded the results.SELECT * FROM uchome_mtag AS a JOIN (select max (tagid) AS id FROM uchome_mtag) AS BON (a. tagid> = FLOOR (B. id * RAND () LIMIT 50I found a problem after

Class upload_class {Private $ ptname; // The Name Of The upload form;Private $ udname; // whether to create a subdirectory by month (0 indicates no, others are true );Private $ ufname; // whether to create a file name by time (0 indicates no, others

6, Using a Thread Group A thread group is a way to manage threads. It logically associates threads with each other. Generally, all threads belong to the Default thread group (it is a class constant ). If a new thread group is created, the new thread

PHP generates image verification code exercise notes. Php needs to use phpgd library and session to generate a graphic verification code. in this way, the gd library generates images for users to see, then, the user enters the verification code and

Let's take a look at the general effect. So the next step is to put the code directly. Php$image= Imagecreatetruecolor (100, 30);//Create a canvas$imagecolor= Imagecolorallocate ($image, 255, 255, 255);//Background ColorImagefill ($image, 0, 0,$

PHP image verification code production (medium ). Code for randomly generating numbers and letters :? Phpche. phpsession_start (); for ($ i0; $ i4; $ I ++) {$ rand. dechex (rand ();} $ _ SESSION [check_num] $ rand; $ imageimagecreatetruecolor (50

In the case of high concurrency, the operation of the same file can result in data confusion, so you need to do some special processing when working with files, and here are a few solutions to summarize. Hope to help everyone. Scenario One: Use the

PHP generates a GIF image verification code. First, you need to set the path of the font and font file in the class $ FontFilePath and $ FontFileName. For example, copy the code as follows: privatestatic $ FontFilePathstaticfont first The path

In php, adding watermarks to Chinese characters requires some simple processing. one is to convert characters into gbk, and the other is to load Chinese fonts, with these two conditions, adding a Chinese watermark to the image is simple. Example 1

Import your own fonts, you can follow your own amount needs to be modified casually. Class imagecode{ Private $width; Private $height; Private $counts; Private $distrubcode; Private $fonturl;

PHP generates a digital letter verification code picture Header (' content-type:image/png '); $image =imagecreatetruecolor (100, 30); $color =imagecolorallocate ($image, 255, 255, 255); Imagefill ($image,

/* * Function: PHP image watermark (watermark supports picture or text) Parameters * $groundImage background image, that is, need to add a watermark image, temporarily only support gif,jpg,png format; * $waterPos watermark

/* * Function: PHP image watermark (watermark supports picture or text) Parameters * $groundimage background image, that is, need to add a watermark image, temporarily only support gif,jpg,png format; * $waterPos watermark

Elegant verification code Import the font by yourself. you can modify the font as needed.We recommend that you use bold fonts. Class Imagecode { Private $ width; Private $ height; Private $ counts;

A beautiful PHP verification code Import the font by yourself. you can modify the font as needed. Class Imagecode { Private $ width; Private $ height; Private $ counts; Private $ distrubcode;