Php Md5 String

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 ...

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. ...

Crypt (PHP3, PHP4) crypt---&http://www.aliyun.com/zixun/aggregation/37954.html ">nbsp; Use des to 碥 String code syntax: String crypt (String str [, string salt]) Description: Crypt () will encode the string using standard Unix des encryption ...

PHP code security and XSS, SQL injection and other sites for the safety of all kinds of very useful, especially UGC (User Generated Content) sites, forums and e-commerce sites, often XSS and SQL injection hardest hit. Here is a brief introduction to some of the basic programming points, relative to system security, php security more requires the programmer to enter the various parameters of the user can be more careful. PHP compiler security recommendations in the process of installing Suhosin patch, will install security patch php. ini security device ...

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 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 ...

Intermediary transaction http://www.aliyun.com/zixun/aggregation/6858.html ">seo diagnose Taobao guest cloud host Technology Hall Autumn October, is the harvest season, but some do garbage station stationmaster Harvest is not rank and PR, But ruthless by K, from this Baidu algorithm adjustment can be seen, Baidu for the standard is more inclined to Google, that is, the content of the original test more stringent, some collected even false original articles, ...

Three PHP tutorials Chinese characters in English verification code generation Program $ChineseChar = Explode (', ', ' People, out, come, friends, learning, filial piety, benevolence, righteousness, courtesy, friendship, loyalty, country, middle, easy, white, people, Fire, king, Gold, wood, thunder, Wind, Dragon, Tiger, heaven, earth, life, halo, vegetables, birds, fields, three, hundred , Money, bliss, love, affection, beast, worm, fish, nine, net, new, degree, ay, alas, Ah, oh, Miriam, old, Little, day, month, star, Ken, each, Cheng "); $k [0]= $ChineseCh ...

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 ...

Intermediary transaction http://www.aliyun.com/zixun/aggregation/6858.html ">seo diagnose Taobao guest cloud host technology Hall 　　A lot of hacker intrusion personal website is an important way to get the administrator account and password through the SQL injection vulnerability, and then openly into your management backstage, upload asp or PHP Trojan Horse, and then the right administrator or do something else. But a little understanding of hashing (MD5 message digest algorithm) encryption ...