CI框架源码阅读,系统常量文件constants.php的配置，需要的朋友可以参考一下 配置系统常量1、当文件系统工作的时候检查并配置这些首选项 文件系统运行的时候这些默认的值会适当的增加系统的安全性，但是在php或apache的底层单独的为每各用户开一个进程的时候，使用八进制的值永远是正确的 FILE_READ_MODE 读取文件的模式 FILE_WRITE_MODE 写入文件的模式 DIR_READ_MODE 读取目录的模式 DIR_WRITE_MODE 写入目录的模式 2、文件流模式 当我们使用fopen()/popen()的时候需要这些模式 define('FOPEN_READ', 'rb'); define('FOPEN_READ_WRITE', 'r+b'); define('FOPEN_WRITE_CREATE_DESTRUCTIVE', 'wb'); define('FOPEN_READ_WRITE_CREATE_DESTRUCTIVE', 'w+b'); define('FOPEN_WRITE_CREATE', 'ab'); define('FOPEN_READ_WRITE_CREATE', 'a+b'); define('FOPEN_WRITE_CREATE_STRICT', 'xb'); define('FOPEN_READ_WRITE_CREATE_STRICT', 'x+b'); 文件源码： [php] <?php if ( ! defined('BASEPATH')) exit('No direct script access allowed'); /* |-------------------------------------------------------------------------- | File and Directory Modes |-------------------------------------------------------------------------- | These prefs 控制台、首选项 are used when checking and setting modes when working | with the file system. The defaults are fine 罚款 on servers with proper | security, but you may wish (or even need) to change the values in | certain environments (Apache running a separate process for each | user, PHP under CGI with Apache suEXEC, etc.). Octal values should | always be used to set the mode correctly. */ define('FILE_READ_MODE', 0644); define('FILE_WRITE_MODE', 0666); define('DIR_READ_MODE', 0755); define('DIR_WRITE_MODE', 0777); /* |-------------------------------------------------------------------------- | File Stream Modes 文件流模式 |-------------------------------------------------------------------------- | These modes are used when working with fopen()/popen() */ define('FOPEN_READ', 'rb'); define('FOPEN_READ_WRITE', 'r+b'); define('FOPEN_WRITE_CREATE_DESTRUCTIVE', 'wb'); // truncates existing file data, use with care define('FOPEN_READ_WRITE_CREATE_DESTRUCTIVE', 'w+b'); // truncates existing file data, use with care define('FOPEN_WRITE_CREATE', 'ab'); define('FOPEN_READ_WRITE_CREATE', 'a+b'); define('FOPEN_WRITE_CREATE_STRICT', 'xb'); define('FOPEN_READ_WRITE_CREATE_STRICT', 'x+b'); /* End of file constants.php */ /* Location: ./application/config/constants.php */ |
