How to set up configuration files in PHP
PHP设置配置文件的方法
变量 $config 是我们所提交过来的配置信息,是以数组形式存储的。
function set_config($config){ if(!is_array($config)) return FALSE; $configfile = CONF_PATH.'config.php'; if(!is_writable($configfile)) return('Please chmod ./config.inc.php to 0777 !'); $pattern = $replacement = array(); $str = file_get_contents($configfile); foreach($config as $k=>$v){ $pattern[$k] = "/['\"]".strtoupper($k)."['\"]\s*=>\s*([']?)[^']*([']?)/is"; $replacement[$k] = "'".strtoupper($k)."'=> \${1}".$v."\${2}"; } $str = preg_replace($pattern, $replacement, $str); return file_put_contents($configfile, $str); }
上面的$configfile 为文件的完整路径,也就是绝对路径。
通过file_get_contents文件获取配置文件的所有信息
再通过preg_replace方法把我们所修改,也是所提交过来的配置信息进行与原先的配置信息替换。
在通过file_put_contents把修改的所有信息替换了。
上面的方法不仅仅可以用在修改配置信息,还可以使用到修改任何文件

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