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1.獲取PHP安裝檔案： downloads  或直接下載 php-5.5.9.tar.gz

  獲取安裝php需要的支援檔案： libxml2

2.安裝libxml2

 tar zxvf libxml2-2.9.1.tar.gz cd libxml2-2.6.32 ./configure --prefix=/usr/local/libxml2  make make install

如果安裝成功以後，在/usr/local/libxml2/目錄下將生成bin、include、lib、man和share五個目錄。在後面安裝PHP5原始碼包的配置時，會通過在configure命令的選項中加上"--with-libxml-dir=/usr/ local/libxml2"選項，用於指定安裝libxml2庫檔案的位置

3.安裝php5

#cd php-5.3.8#./configure \ --prefix=/usr/local/php \ --with-mysql=/usr/local/mysql \  --with-apxs=/usr/local/apache2/bin/apxs \--with-libxml-dir=/usr/local/libxml2#make #make install 

4.重新配置apache2讓他支援php

• 配置 httpd.conf 讓apache支援PHP：

　　# vi /usr/local/apache/conf/httpd.conf

　　找到 AddType application/x-gzip .gz .tgz 在其下新增如下內容

　　AddType application/x-httpd-php .php      (.前面有空格)

　　AddType application/x-httpd-php-source .phps        (.前面有空格)

• 然後CPOPY PHP的配置檔案

　　cp php-5.3.8/php.ini.dist /usr/local/php/lib/php.ini 

    （如果沒有php.ini.dist 則把php.ini-development php.ini-production中的任何一個重新命名為php.ini.dist即可。）

　　修改php.ini檔案 register_globals = On

• 重啟apache

　　service apache restart

5.測試php是否成功安裝

寫一個php測試頁info.php，放到apache2/htdocs中。

<?php 

 phpinfo(); 

?>; 

在瀏覽器中輸入：伺服器地址/info.php

如果能正常顯示出php的資訊，則說明Apche+Mysql+PHP安裝成功！

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CentOS 5.5使用yum來安裝LAMP

1. 換源，使用sohu安裝源
1.1 備份CentOS-Base.repo 
cd /etc/yum.repos.d/ 
cp CentOS-Base.repo CentOS-Base.repo.bak 
1.2 替換源 
用vi開啟CentOS-Base.repo，並將內容清空，然後將下面的內容複製進去，並儲存。 
# CentOS-Base.repo 
# 
# This file uses a new mirrorlist system developed by Lance Davis for CentOS. 
# The mirror system uses the connecting IP address of the client and the 
# update status of each mirror to pick mirrors that are updated to and 
# geographically close to the client. You should use this for CentOS updates 
# unless you are manually picking other mirrors. 
# 
# If the mirrorlist= does not work for you, as a fall back you can try the 
# remarked out baseurl= line instead. 
# 
# 
[base] 
name=CentOS-$releasever - Base 
baseurl=http://mirrors.sohu.com/centos/$releasever/os/$basearch/ 
gpgcheck=1 
gpgkey=http://mirrors.sohu.com/centos/RPM-GPG-KEY-CentOS-5 
#released updates 
[updates] 
name=CentOS-$releasever - Updates 
baseurl=http://mirrors.sohu.com/centos/$releasever/updates/$basearch/ 
gpgcheck=1 
gpgkey=http://mirrors.sohu.com/centos/RPM-GPG-KEY-CentOS-5 
#packages used/produced in the build but not released 
[addons] 
name=CentOS-$releasever - Addons 
baseurl=http://mirrors.sohu.com/centos/$releasever/addons/$basearch/ 
gpgcheck=1 
gpgkey=http://mirrors.sohu.com/centos/RPM-GPG-KEY-CentOS-5 
#additional packages that may be useful 
[extras] 
name=CentOS-$releasever - Extras 
baseurl=http://mirrors.sohu.com/centos/$releasever/extras/$basearch/ 
gpgcheck=1 
gpgkey=http://mirrors.sohu.com/centos/RPM-GPG-KEY-CentOS-5 
#additional packages that extend functionality of existing packages 
[centosplus] 
name=CentOS-$releasever - Plus 
baseurl=http://mirrors.sohu.com/centos/$releasever/centosplus/$basearch/ 
gpgcheck=1 
enabled=0 
gpgkey=http://mirrors.sohu.com/centos/RPM-GPG-KEY-CentOS-5 
1.3更新一下 yum -y update 

2. 用yum安裝Apache、Mysql、PHP
2.1 安裝Apache 
yum install httpd httpd-devel 
安裝完成後，啟動apache 

/etc/init.d/httpd start 
設為開機啟動:chkconfig httpd on 
2.2 安裝mysql 
yum install mysql mysql-server mysql-devel 
完成後，啟動mysql 

/etc/init.d/mysqld start 
2.2.2 設定mysql密碼 

mysql -uroot
mysql> USE mysql; 
mysql> UPDATE user SET Password=PASSWORD('newpassword') WHERE user='root'; FLUSH PRIVILEGES; 
2.2.3 允許遠端登入 
mysql -u root -p 
Enter Password: <your new password> 
mysql>GRANT ALL PRIVILEGES ON *.* TO 'username'@'%' IDENTIFIED BY 'password' WITH GRANT OPTION;  FLUSH PRIVILEGES; 
完成後就能用mysql-front遠端管理mysql了。 
2.2.4 設為開機啟動 
chkconfig mysqld on 
3. 安裝php 
yum install php php-mysql php-common php-gd php-mbstring php-mcrypt php-devel php-xml 
/etc/init.d/httpd start 
4. 測試一下 
4.1在/var/www/html/新建個test.php檔案，將以下內容寫入，然後儲存。 
<?php 
phpinfo(); 
?> 
4.2 防火牆配置 
a.新增.允許訪問埠{21: ftp, 80: http}. 
iptables -I RH-Firewall-1-INPUT -m state –state NEW -m tcp -p tcp –dport 21 -j ACCEPT 
iptables -I RH-Firewall-1-INPUT -m state –state NEW -m tcp -p tcp –dport 80 -j ACCEPT 
b.關閉防火牆{不推薦}. 
service iptables stop 
c.重置載入防火牆 
service iptables restart 
4.3然後在客戶端瀏覽器裡開啟http://serverip/test.php，若能成功顯示，則表示安裝成功。 
至此，安裝完畢。感慨，yum真是太好用了。

PHP 升級

1.先檢視當前php版本
#php -v

2.升級php版本
rpm --import http://repo.webtatic.com/yum/RPM-GPG-KEY-webtatic-andy

wget -P /etc/yum.repos.d/ http://repo.webtatic.com/yum/webtatic.repo

yum --enablerepo=webtatic update php mysql
升級php最好是連mysql一起升級,好了可以看到php已經升級成5.3.28

3、檢視升級後的php版本

#php -v

PHP 5.3.28 (cli) (built: Dec 15 2013 17:43:05) 
Copyright (c) 1997-2013 The PHP Group
Zend Engine v2.3.0, Copyright (c) 1998-2013 Zend Technologies

可以看到php的版本已經更新到5.3.X

重啟 /etc/init.d/httpd restart 或 apache  service httpd restart

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升級 2（推薦）

1） 預安裝