如何加速你的PHP程序
程序
我一直认为PHP的运行速度是非常的理想的，尤其是Zend引擎的加速之后。但是PHP仍然有加速的可能，你知道吗？
所有的一切都始于如何优化PHP的编译
尝试使用针对CPU型号的特殊编译参数 -msse -mmmx -mfpmath=sse
在编译的时候添加 -03参数
编译的时候调节CPU的参数 -march -mcpu Use Caution
尽量只编译你需要的模块，避免无用的扩展加载
对于很少使用的扩展模块，应该编译成共享模式，便于在运行的时候动态加载
也许有些时候--disable-all 会是你的好朋友
把PHP静态编译到Apache可以提速20％
# PHP
./configure --with-apache=/path/to/apache_source
# Apache
./configure --activate-module=src/modules/php4/libphp4.a
优化你的PHP配置文件
确认你的 register_globals 配置为disabled
禁用 magic_quotes_* 选项
关闭 expose_php
关闭 register_argc_argv
除非绝对需要不要启用 always_populate_raw_post_data
Apache服务器的优化配置
MaxSpareServers 使用高配置
MaxClients 设置为你的服务器可以承受的2/5
MaxRequestsPerChild 理想情况是0 (不限)，但是实际上都设置为一个较的一个值
优化文件访问
DirectoryIndex 文件列表尽可能简短
无论如何禁止 .htaccess 文件的 AllowOverridenone
使用 FollowSymLinks 简化文件访问处理
避免使用 mod_rewrite 或者更复杂的操作
如果日志非必须的话就禁用
如果必须使用日志，那么请记录到一个文件中去，并且在分析过后清除
消除昂贵的系统呼叫
不要开启 ExtendedStatus
在允许和禁止规则的时候使用IP而不要使用域名
不要启用 HostnameLookups
保持 ServerSignature 关闭
设置KeepAlive 为较小的一个值
动态和静态的内容分离
提高硬盘性能参数
使用output_buffering 优化PHP到Apache的交互
增加Apache的 SendBufferSize 大小
提高缓存执行
使用PHP代码缓存机制
Turck MMCache 停止开发
APC较慢，优化不够
Zend Cache优化性能好，但付费
ionCube PHP Accelerator 免费但不开源
如果可以使用Zlib压缩
减少输出数据
用CSS替换HTML
压缩HTML页面
使用Sessions管理
优化你的SQL指令
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