php Readfile vs include

来源：百度文库编辑：神马文学网时间：2024/07/04 21:47:06

php Readfile vs include

http://blog.iyi.cn/start/2007/04/php_readfile_vs_include.html去年就曾经测试过php filesystem相关函数和include require的性能，今天无意间看到国外一个更全面的对比，显然include和require是最慢的。所以尽量少用include，尤其是作为缓存，最好还是用文本缓存，我原以为直接缓存为php脚本速度比较快，后来测试才发现include效率很低。出处：http://www.raditha.com/wiki/Readfile_vs_include Function Brief Description string file_get_contents ( string filename [, int use_include_path]) Reads entire file into a string int fpassthru ( resource handle) Output all remaining data on a file pointer string fgets ( resource handle [, int length]) Gets line from file pointer array file ( string filename [, int use_include_path]) Reads entire file into an array

require(string filename)            include(string filename)            require_once(string filename)            include_once(string filename)

includes and evaluates the specific file. int readfile ( string filename [, int use_include_path]) Outputs a file Function Sample Usage Time (s) Memory (b) file_get_contents echo file_get_contents($filename); 0.00564 1067856 fpassthru fpassthru($fp); 0.00184 20032 fgets

$fp = fopen($filename,"rb");            while(!feof($fp))            {            echo fgets($fp);            }

0.07190 30768 file echo join("",file($filename)); 0.06464 2185624 require_once require_once($filename); 0.08065 2067696 include include($filename); 0.08202 2067696 readfile readfile($filename); 0.00191 19208 Function Time (s) Memory (b) 32Kb File 1Mb File 32Kb File 1Mb File file_get_contents 0.00152 0.00564 52480 1067856 fpassthru 0.00117 0.00184 20016 20032 fgets 0.00195 0.07190 30760 30768 file 0.00157 0.06464 87344 2185624 require_once 0.00225 0.08065 67992 2067696 include 0.00222 0.08202 67928 2067624 readfile 0.00117 0.00191 19192 19208

php Readfile vs include php Readfile vs include jsp 静态include和动态include php 再谈 #include file 和 #include virtual的区别再谈 #include file 和 #include virtual的区别 C/C++#include 机制简述 C Header File Include Patterns Contain 与include 辨析pp 给javascript加入include(import)命令 JSP中的include的两种用法【转】, , and php 跳转 PHP & memcached php教程 php编码 php实验室 socket.php php语法 PHP echo 阳光锈了-ASP中#Include命令简介 UML用例图中包含(include)、扩展(extend)和泛化(generalizati... 转贴：UML用例图中包含(include)、扩展(extend)和泛化(generaliz... PHP 文件锁flock - 聊聊PHP - php,freebsd,javascript