php get root directory of website

I use the system is CentOS, the site root directory is/var/www/html, the root directory is put head.inc.php, when I in index.php require (' head.inc.php ') Everything is normal, require ('. Head.inc.php ') is also normal when require ('/head.inc.php

The security practice of PHP, which must be known by system administrators, is an open source server scripting language and widely used. The Apacheweb server provides the convenience of accessing files and content through HTTP or HTTPS. Improper

The security practice of PHP, which must be known by system administrators, is an open source server scripting language and widely used. The Apacheweb server provides the convenience of accessing files and content through HTTP or HTTPS. Improper

This article is a basic tutorial for beginners. I hope I can learn how to build a website after reading it? This site updates the latest tutorials every day. I hope you can provide more support! Requirement 1: Determine the website subjectTo create

Requirement 1: Determine the website subject To create a website, you must first solve the website content problem, that is, determine the website subject. PC magazine in the United States rated ten subjects of the top 100 national famous websites

PHP security practices that system administrators must know PHP is an open source server-side scripting language that is widely used. The Apache Web server provides this convenience: access to files and content via HTTP or HTTPS protocol. Improperly

PHP server of several architectures, highly recommended!!! Found a good article, very detailed introduction of the current PHP server several architectures, specially

Several PHP server architectures are strongly recommended !!! I found a good article and introduced in detail several architectures of the current PHP Server. I specially reprinted it. I strongly recommend it !!? Nginx + PHP + PHP-FPM (FastCGI) on

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Packaging | design | Project coding is not a difficult task for qualified PHP programmers (perhaps just a matter of time), so the system analysis and design phase becomes particularly important. However, this article does not intend to discuss and