random qr code generator

based on the current time. ③ here introduces a fairly excellent random number generator program that can be applied in many fields. Detailed Source reference: http://www.jb51.net/article/12566.htm So how can you easily get a random number in a given range? After my comparison, this function of mine is so far the most concise practical drop on the Internet In

PHP Random number code Today, a friend to inquire about the fire PHP random number of questions, this is the basic problem of PHP, we can refer to the fire provided PHP manual, because of time, small series also lazy writing, in the Internet to find some examples, integrated together, I hope to help you, if there are problems please say below. 　　 Seed user-defin

Now the web will often need to generate some invitation code, activation code. The need is unique and random. Here's a summary of some common methods for generating random code and sharing your own 1 methods.1. Write your own code

; Method 2: The Code is as follows: $ Numbers = range (1, 20 );// Broadcast the seed of the random number generator, which is dispensable and does not affect the test result.Srand (float) microtime () * 1000000 );Shuffle ($ numbers );// Skip the first value of the list (the index is saved)While (list (, $ number) = each ($

Now many web sites use the random image of the way, is a simple, effective means of preventing malicious attacks. Today, I read some information on the Internet to understand its generative principle: from the sample, get the random string, the random string is saved into the session, and a bitmap form random

gen_random_password ($ password_length = 32, $ generated_password = ""){$ Valid_characters = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789 ";$ Chars_length = strlen ($ valid_characters)-1;For ($ I = $ password_length; $ I --;){// $ Generated_password. = $ valid_characters [mt_rand (0, $ chars_length)];$ Generated_password. = substr ($ valid_characters, (mt_rand () % (strlen ($ valid_characters), 1 );}Return $ generated_password;}?> Php Password

Php random number code Today, I have a friend who asked me about the random numbers of PHP. This is the basic problem of PHP. You can refer to the PHP manual provided by iron. Due to the time relationship, the editor is also lazy, I have found some examples on the Internet. I hope they will help you. If you have any questions, please refer to them below. 　　 // Se

'****************************** ' Function: Generator (Length) ' Parameters: Length, number of arbitrary lengths, random code digits ' Author: Arisisi ' Date: 2007/7/15 ' Description: Generate random code function with arbitrary English + digit digit length ' Example:

Validatecode. ashx Public class validatecode: ihttphandler { Public void processrequest (httpcontext context) {context. response. cache. setcacheability (httpcacheability. nocache); // pay special attention. If this parameter is not added, click Verify image 'do not see another login. this. createcheckcodeimage (generatecheckcode (context), context );} Public bool isreusable {get {return false ;}} private string generatecheckcode (httpcontext context) {int number; char