The simplest method is the mt_rand function.Mt_rand () returns a random integer using the Mersenne Twister algorithm.ExampleIn this example, we will return some random numbers: The code is as follows:Copy code Echo (mt_rand ());Echo (mt_rand ());
When using PHP to develop applications, especially website programs, you often need to generate random passwords. for example, if you register a user to generate a random password, you also need to generate a random password to reset the password.
PHP: eight security-related functions
Security issues are an important part of programming languages. In almost any practical language, some functions, modules, or other functions are provided to ensure security. In the modern Internet, we often
Several workarounds for PHP to generate unique IDs
There's a lot of ways to check it online.
1, MD5 (Time (). Mt_rand (1,1000000));
This method has a certain probability that there will be repetition
2. PHP built-in function uniqid ()
The Uniqid ()
If you are running a Web application that uses MySQL, it can store passwords or other sensitive information in the application.
If you are running a Web application that uses MySQL, it can store passwords or other sensitive information in the
'Make a completely dynamic password and let the same password generate different results'Password AAA is calculated for the first time and the result is:'Jlce1d65ec3b91556234879c9db8f6da1123'Second time:'Hjmnbe0d01cc1fbd3e18ae7431fa52fb3ce4'Third
Recently, I learned some basic syntaxes, learned to use the smary template, and then read the thinkphp framework,
This framework is more powerful than I was surprised. Its ror is really strong, and its built-in crud is more intelligent than the Java
He has been reading what he wrote over the past few days.Code. Some codes are useful and can be shared with you.
The code below is all found from the utils. CS class.
/// /// Returns the true length of the string. The length of one Chinese
I will share two examples of using MD5 in JavaScript and Java,
I checked on the Internet and collected two examples of Java and JavaScript on the Internet. I tried and shared them.1. Java:
Package org. bearfly. test. md5; import java. io.
Thinkphp + AJAX dynamic verification of user input is legal, thinkphpajax
In the case of user registration, if you wait for the user to enter all the information, click the Registration button to submit, and then verify that the input is correct,
Connect Python to the MySQL database
Create Database Connection import MySQLdbConn = MySQLdb. connect (host = "localhost", user = "root", passwd = "sa", db = "mytable ") Common parameters includeHost: The host Name of the connected database server.
[1]. Overview following the previous demonstration of single-point Logon (SSO) instance based on CAS, the server authentication mechanism adopts the default configuration of the test environment, this article will focus on how to query the database
The application of the MD5 algorithm generates a summary of the information.
A typical application of MD5 is to generate a Message Digest (message-Digest) for a piece of information to prevent tampering. For example, many software in UNIX have a
What you need to know, useful Python functions and features, python features
After using Python for many years, I accidentally discovered some features that we did not know in the past. Some of them can be said to be very useful, but they are not
PHP uniqid () function
The uniqid () function generates a unique ID based on the current time in microseconds.
Note:Because the system time is used, the IDS generated by this function are not optimal. To generate an absolutely unique ID, use
Keyword-based webpage replication algorithm
I think the algorithms mentioned above are based on this document. For large search engines, there are some performance gaps, so some optimizations are aimed at the keywords of web pages, or the meta
'--------------------------------------'Cocoon Disk Manager V3 -- MD5 Function''Asp Implementation of the classic MD5 Algorithm'-- From a foreign website'--------------------------------------Private const bits_to_a_byte = 8Private const
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