Az Php

As PHP programmers, especially novices, always know too little about the dangers of the Internet, for many of the external invasion are at a loss what to do, they do not know how hackers invaded, submitted to the invasion, upload vulnerabilities, sql Injection, cross-scripting and more. As a basic precaution you need to be aware of your external commits and do a good job with the first side of the security mechanism to handle the firewall. Rule 1: Never trust external data or enter information about Web application security, the first thing you must recognize is that you should not trust external data. External data (outside d ...

Finding and matching php strings The functions used to find or match or locate in php are numerous and all have different meanings. Here only about the more strstr, stristr. The latter and the former function, the return value is the same, but not case-sensitive. strstr ("parent string", "substring") is used to find the first occurrence of a substring in the parent string and returns the part of the parent string that begins with the substring and ends with the parent string . Such as ec ...

Another pseudo-static implementation of php is pseudo-static, that is, users and search engines to see the static page. Html suffix, but in fact it is still a dynamic program, but somehow disguised. This approach also has two ways to achieve: The first is through the web server, URL rewrite link to achieve the static, the following example to explain the way to achieve it. For users with server configuration permissions, it is recommended to use apache mod_rewrite module, assuming here has installed mod ...

User-acceptable language information, on _SERVER [HTTP_ACCEPT_LANGUAGE], the variable information is like this "zh-cn", if it is a multi-language column, is similar to "zh-cn, en; q = 0.8, ko; q = 0.5, zh-tw; q = 0.3 "The following questions can be solved. Code: <? Php error_reporting (E_ALL ^ ​​E_NOTIC ...

php tutorial url, date, ip, email address detection class code This article provides a really regular expression to detect url address, date format, ip address, and e-mail address is valid verification code. class validation {function check_email ($ value) {// check a email address return (bool) preg_match ('/ ^ [a-z0-9 ._% ...