Browser only able to decode the document in HTML format , for non- HTML document format , browser plug-ins or by calling CGI call other APIs to decode .
Dynamic Website : We on the server side or client-side implementation of a script or a program , the results of the implementation of this program under a different user, client, perform scene is different!
Dynamic site must be able to make a response corresponding to the request according to a user, it returns the contents of even different for different users, according to customer requester, returning
The result is not the same.
Dynamic website is divided into client and server-side dynamic dynamic
Client News: Our server-side source code to be downloaded to the local, and performed locally, and the execution results are displayed through a browser.
Server-side dynamic: the implementation of the source code inside the server, and the implementation of the results returned to the client browser.
mysql.i686-PHP -> This package is PHP to access MySQL driver
When PHP3.0 , introduced zend engine, our implementation process is divided into two sections
The first paragraph: lexical analysis, parsing, convert opcode
Second stage: execution of opcode (placed in memory )
In order to avoid his own to clear opcode, opcode and shared among a number of different processes, sharing opcode function, introduced Cache Accelerator!
Cache Accelerator:
APC
eAccelerator
XCache
php interpreter and mysql interactive
Truly interactive and mysql is using php interpreter developed program ( php program)
<HTML> -> HTML tag
<head> -> header
<title> </ title> -> title ( on the title page )
</head>
<Bady> -> body (body comprising web page content)
</bady>
</html>
/etc/httpd/conf/httpd.conf
1, find the module, confirm that Apache supports CGI
2, find this option ScriptAlias / cgi-bin / "/ var / www / cgi-bin /" for CGI scripts is scheduled to be executed in which directory which
Access path to the directory
3, and then in the / var / www / cgi-bin / create a script in this directory
Apache support DSO mechanism
DSO: Dynamic Shared Object
php interpreter and httpd interacts ()
Install a: FastCGI PHP server itself can generate idle process in advance, these idle process by the PHP server self-management, front-end Apache need to use PHP time function
PHP server to initiate a direct request on it, PHP server assigns an idle process to Apache , if Apache request is over, the process still or back, the pin needs
Server will destroy themselves when destroyed. A server based on a similar mechanism as a client, Apache for the client, PHP server to server.
The default listening on port 9000
After that comes with Red Hat 5.4 on this function, the name fpm (Rapid PHP module ) ,
Apache and PHP combination of three ways:
CGI
module (simple)
fastCGI (configuration trouble)
如何配置Apache服务器使用PHP功能？
1、PHP安装包
php-5.3.3-22.el6.i686.rpm -->不支持fpm，需要使用这个功能需要打补丁
2、php配置文件（Apache基于线程或进程工作时，他们所依赖的PHP模块也是不一样的 ）
<IfModule prefork.c> -->基于进程工作
LoadModule php5_module modules/libphp5.so -->在进程模式下PHP，PHP以传统意义上的方式工作
</IfModule>
<IfModule worker.c> -->基于线程工作
LoadModule php5_module modules/libphp5-zts.so -->在线程模式下，PHP必须以zts的方式工作
</IfModule>
不管是哪一种，他会判断你使用哪个模式，并相应加载合适的模块
AddHandler php5-script .php -->处理器，以.php结尾的文件，就是用这个工具来处理
AddType text/html .php -->添加了一种类别text/html
DirectoryIndex index.php -->默认主页面
PHP程序的主配置文件（/etc/php.ini）
[名字] -->一个[名字]只对这一堆指令生效（分段式配置）
一大堆指令
[名字]
一大堆指令