How To Encrypt Php

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The internal algorithm of PHP implementing URL encryption and decryption

Recent learning URL jump when new into three PHP encryption and decryption function is very good, looks like the discuz ... Use these encryption to decrypt the reason is because sometimes their own URL address was acquired after you want to break inside the value of the content you must know your key, no key, he should be broken for a while to know the content of your URL. Pack them into a file called fun.php bar <?php function Passport_encrypt ...

php universal injection and injection detailed instructions

php tutorial generic anti-injection is mainly to filter some sql command and php post get pass over reference / we want to filter some illegal characters, so that you can prevent the basic injection, and that off the apache server installation settings method is also necessary. Administrator user name and password are taken md5 encryption, so that we can effectively prevent the injection of php. There are servers and mysql tutorials should also strengthen some security precautions. For linux server security settings: encrypted password, use "/ usr / sbin / authconf ...

php mail function to send e-mail (can be attached)

<"http://www.w3.org/tr/xhtml1/dtd/xhtml1-transitional.dtd"> <html xmlns = "http://www.w3.org/1999/xhtml"> <head> <meta http-equiv = "content-type" con ...

PHP string functions and usage analysis

AddSlashes: String added to the slash. bin2hex: binary into hexadecimal. Chop: Remove continuous blanks. Chr: returns the ordinal value of the character. chunk_split: The string is divided into small pieces. convert_cyr_string: Converts the ancient Slavonic string into another string. crypt: Encrypt the string with DES encoding. echo: output string. explode: cut the string. flush: clear the output buffer. ...

Detailed Apache under. Htaccess file usage

The .htaccess file allows us to modify some server settings for a particular directory and its subdirectories. Although this type of configuration is best handled in the section of the server's own configuration file, sometimes we do not have permission to access this configuration file at all, especially when We are on a shared hosting host, and most shared hosting providers only allow us to change server behavior in .htaccess. .htaccess file is a simple text file, note the "." before the file name is very important, we can use your favorite text editor ...

MCrypt encoding function library: MCRYPT_ECB

MCRYPT_ECB uses the ECB to add/decrypt information. Syntax: string MCRYPT_ECB (int cipher, string key, string data, int mode);  Return value: String function kind: Encoding processing &http://www.aliyun.com/zixun/aggregation/37954.html ">nbsp; Content description ...

MCrypt encoding function library: MCRYPT_CFB

MCRYPT_CFB uses CFB to add/decrypt data. Syntax: string MCRYPT_CFB (int cipher, string key, string data, int mode, string iv); Return value: String function kind: Encoding processing &http://www.aliyun.com/zixun/aggregation/37954.html ">nbsp ...

A preliminary study on flash application in anti-collection

Intermediary transaction http://www.aliyun.com/zixun/aggregation/6858.html ">seo diagnose Taobao guest cloud host Technology Hall preface now the popularity of the site to gather the level of everyone has become commonplace, generally CMS must have collection function. For many webmaster, site construction early, acquisition is very necessary, however, when your site is big, the problem of collection and prevention must be considered. I have discussed related topics in Discuz before, and have not ...

Use the MD5 transform algorithm to prevent exhaustive decoding of passwords

MD5 is the most common cryptographic algorithm used in Web applications. Since the MD5 is irreversible, the ciphertext after MD5 calculation can not get the original text through the reverse algorithm. The intention of using MD5 encrypted text passwords in Web applications is to prevent the passwords stored in the database from being compromised and then being directly acquired. However, the attackers not only have a large number of password dictionaries, but also set up a lot of MD5 original/ciphertext control database, can quickly find common password MD5 ciphertext, is the efficient way to decipher MD5 ciphertext. However, the number of MD5 ciphertext ...

How to prevent hackers from exploiting new dedecms vulnerabilities

The intermediary transaction SEO diagnoses Taobao guest cloud host technology Hall opens, return to school, again in the dormitory Internet, but now the campus network security? During the summer vacation, the DEDECMS system exposes the serious loophole, this system exists in many school's campus network, the hacker can use this loophole to control the campus network, carries on the horse, embeds the virus ......   However, there are many computer experts in the campus network, we will take a look at the "Red Hat" students to their school site security test. My net name is "Red cap", I guess every university campus, have like me ...

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