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An example of using the motherboard serial number for registration is as follows. Unit regobj; Interface UsesWindows,Messages,Sysutils,Classes,Forms; type tregobj = Class private fserial: string; // motherboard serial number fkey: string; /

We are learningPHP string operations (1) echo, print, printf, sprintf The first two functions are output strings. If there is a variable name in the string, it is replaced with its value.The last two functions are similar to C functions with the

The chr function is used to convert ASCII codes into characters. The ord function is used to convert characters into ASCII codes. ASCII code is the encoding of characters that can be displayed by a computer. Its value ranges from 0 to 255,

The GBK simplified character set is encoded in 1 and 2 bytes at the same time. When the high position is 0x00 ~ 0x7f is a byte, and the value above 0x80 is expressed in two bytes" Note: The brackets are in hexadecimal format. When you find that

Use SHA1 to generate the key book. ZLIB compression for more than 300 characters supports Chinese characters. you can test it. The code is as follows: // + ------------------------------------------------------------------------ + // | Willko

Recently, a powerful encryption and decryption function was found in discuz. This function can encrypt and restore strings within a specified period of time. in this way, we can use this function for many purposes, such as the token encrypted

This article describes how to use python to download cartoons by Crawlers. parse the cartoon resources of Youxia. the code for downloading all its cartoon chapters is as follows: #! /Usr/bin/python3.2Import OS, socketImport urllibImport urllib.

Php user authentication base64 verification method. Php Tutorial user verification base64 verification method cookie processing functiondsetcookie ($ var, $ value, $ life0, $ prefix1) {global $ cookiedomain, $ cookiepath, $ addtime, $ _ server;

To identify double-byte characters, such as Chinese characters or Japanese and Korean characters, each byte occupies 1 high. Generally, Chinese and Japanese characters only have one byte and are effectively encoded by seven characters, the binary

Kang Sheng's authcode function can be said to have made significant contributions to the Chinese PHP community. Including Kangsheng's own products, and most Chinese companies that use PHP use this function for encryption. authcode uses exclusive or

Use SHA1 to generate the key book. ZLIB compression for more than 300 characters supports Chinese characters. you can test it. The code is as follows: // + ------------------------------------------------------------------------ +// | Willko

Php source code analysis-DZX1.5 encryption and decryption function authcode usage. Php source code analysis-DZX1.5 encryption and decryption function authcode usage this article describes the php source code analysis-DZX1.5 encryption and decryption

The most classic function in the Discuz function is the Authcode function, because supesite,ucenterhome,ucenter,discuz x uses this function for encryption. Transfer strings and cookiesToday for everyone to bring authcode of the detailed, if the

So we can use this function to do a lot of purposes, such as: Single Sign-on token encryption transmission, temporary password, etc. Copy the Code code as follows: /*** @param string $string original text or ciphertext* @param string $operation

The following small series for everyone to bring an article based on the PHP string Operation function Collection. Small series feel very good, now share to everyone, also for everyone to make a reference. Let's take a look at it with a little

1 Find the character position function: Strpos ($str, Search,[int]): Find the first position of search in $str starting with int; Stripos ($str, search,[int]): function returns the position of the first occurrence of a string in another string. This

Code Copy the code code as follows: /* * RC4 encryption algorithm * $pwd Key * $data the data to be encrypted */ function RC4 ($pwd, $data)//$pwd key $data need to encrypt string { $key [] = ""; $box [] = ""; $pwd _length = strlen ($PWD); $data

Detailed analysis of php encryption and decryption function authcode usage. Core tips: Kangsheng's authcode function can be said to have made significant contributions to the Chinese PHP community. Including Kang Sheng's own products, and most

The usage of the discuz encryption and decryption function and the Chinese comments. Copy the code as follows :? Php *** $ string plaintext or ciphertext * $ operation encryption ENCODE or decryption DECODE * $ key * $ expiry key validity period *

This article mainly summarizes the methods for converting full-width characters into half-width characters in PHP. from simplicity to complexity, you can choose freely based on your needs. The simplest method "; $str =