运用PHP对配置文件进行修改

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Release: 2016-06-13 13:19:38
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使用PHP对配置文件进行修改
http://www.phpweblog.net/kiyone/archive/2007/07/04/1432.html


想修改配置文件aaa.conf,内容如下:
[username]
kiyone

[password]
123

[class]
chass1
我想要修改[password]下面的123这行密码。方案采用把这两行替换成空,然后在重新把这两行写在配置文件的结尾。

$fp = fopen("aaa.conf", 'r');
    $configfile = fread($fp, filesize("aaa.conf"));
    fclose($fp);
    //通过正则替换来做
    $configfile = preg_replace("/\\n\[password\](.+?)\\n/is", "", $configfile);//本只需匹配[password]到下一空行之间的内容,只需写成/\[password\](.+?)\\n/is就行了,但是我想把这行前面的空行也去掉,所以在前面加了个\n

    //把文件重新写回原来的地方
    $fp = fopen("aaa.conf", 'w');
    fwrite($fp, trim($configfile));
    fclose($fp);
    //在文件最后加入新的password两行
     $newpassword = "456";
    $filename="aaa.conf";//定义操作文件
    $fcontent = file($filename); //file()把整个文件读入一个数组中
    $fp  = fopen("$filename","a");
    $str = "\n\n[password]\n$newpassword";
    fwrite($fp, $str);
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此法参考了http://blog.csdn.net/heiyeshuwu/archive/2004/12/24/227251.aspx
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