chr ord

Cryptographic decryption functions encapsulated in the OnethinkPHP/** * System Encryption Method * @param string $data strings to be encrypted * @param string $key encryption key * @param int $expire expiry time Unit seconds * @return String *

1 Define(' KEY ', ' 123456 ');2 $data= ' Oehpetyftdywz3frzi1kkgtizgqs ';//information that is encrypted3 $encrypt= Encrypt ($data); 4 $decrypt= Decrypt ($encrypt); 5 Echo $encrypt, "\ n",$decrypt; 6 functionDecrypt$data) {7 $key=MD5(KEY);8

PHP common processing static operations A detailed PHP operation class that is often used for development-I hope you can add more-improve this operation class   1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28

function Encrypt ($data, $key){$key = MD5 ($key);$x = 0;$len = strlen ($data);$l = strlen ($key);for ($i = 0; $i if ($x = = $l) {$x = 0;}$char. = $key {$x};$x + +;}for ($i = 0; $i $str. = Chr (Ord ($data {$i}) + (Ord ($char {$i}))% 256);}Return Base6

Question 1th string substitutionPush the letters in the string backwards by two, for example A to C,z to B and the other characters unchanged.1 defconvert_string (astring):2bstring =' '3 forIinchastring:4 ifOrd'a') 'W')orOrd'A')

Function: Read and write comma separated value files.Python version: 2.3 and later versionsYou can use the CSV module to process data exported from spreadsheets and databases and to write text files in fields and record formats, often called

Encryption algorithmfunction Encrypt ($data, $key){$key = MD5 ($key);$x = 0;$len = strlen ($data);$l = strlen ($key);$char = $str = ";for ($i = 0; $i {if ($x = = $l){$x = 0;}$char. = $key {$x};$x + +;}for ($i = 0; $i {$str. = Chr (Ord ($data {$i}) +

  This article mainly introduces a set of PHP reversible encryption and decryption algorithm instance code, a friend in need can refer to the For most cryptographic cryptography, we can use MD5, SHA1 and other methods. Can effectively prevent data

Study Notes1. Generate a large string of 1 to 50 with a space between each numberresult = ' ' Store resultsFor I in Range (1,50,1): #遍历1-to 50 dataif i = =: #为了结尾出现空格这样处理result = result + str (i) #把结果存放到变量中去result = result + str (i) + "" #拼接成功Print

For most password encryption, we can use MD5, SHA1 and other methods. Can effectively prevent data breaches, but these methods apply only to data encryption that does not need to be restored.For information that needs to be restored, a reversible

For most cryptographic cryptography, we can use MD5, SHA1 and other methods. Can effectively prevent data disclosure, but these methods apply only to data encryption that does not need to be restored. For information that needs to be restored, a

Specific WebSocket introduction Visible Http://zh.wikipedia.org/wiki/WebSocket Here, we describe how to use Python to communicate with the front-end JS. WebSocket after the handshake is completed using the HTTP protocol, WebSocket communication is

Such as: >>> Print ord (' a ') 97 >>> Print Chr (97) A Below we can start to design our case-and-write program: Copy the Code code as follows: #!/usr/bin/env python#coding =utf-8 def ucasechar (CH):If Ord (CH) in range (97, 122):Return Chr (ORD

In projects, we sometimes need to use PHP to encrypt specific information, that is, to generate an encrypted string through the encryption algorithm. The encrypted string can be decrypted through the decryption algorithm, this allows the program to

Most websites use HTTP Communication, while HTTP is a connectionless protocol. Only when the client requests, the server can send a corresponding response, and the HTTP request package is also relatively large. If it is only a small data

Two classic PHP encryption and decryption functions. In projects, we sometimes need to use PHP to encrypt specific information, that is, to generate an encrypted string through the encryption algorithm, this encrypted string can be used in projects

This article describes in detail how to generate a random password using Python. interested partners can refer to the standard instance to share with you the implementation process of generating a random password using Python, for your reference,

Python provides two built-in functions, ord and chr, for conversion between characters and ASCII codes. For example: >>> Print ord ('A ') 97 >>> Print chr (97) A Now we can start designing our case-insensitive conversion program: The code

About charactersType name: CharFunction: Describes a collection of character dataScope: The character set of the Pascal language. Also known as the ASCII character setRepresentation method: An element in a character type represents one and only one

Title DescriptionDescriptionJam is a science geek who likes to be unconventional. He does not use Arabic numerals, but uses lowercase English letters to count, and he feels that doing so will make the world more colorful. In his notation, the digits