php 得到、修改、删除、配置文件

 

功能实现源代码：

<?phpdefine("__CR__", "\r\n"); //回车换行符class fileConfigOp{/*配置文件*/var $file = '';/*** 构造函数** @param string $file 配置文件* @return null*/function __construct($file = ''){if (empty($file)) {die("Not specify config file!");}if (!file_exists($file)) {die("File '{$this->file}' does not exists!");}if (!is_readable($file)) {die("File '{$this->file}' is not readable!");}$this->file =& $file;}/*** 获取配置文件的变量** @param string $varName 变量名称* @return string|array 如果指定变量名称，则只返回该变量对应的值，否则返回所有变量所对应的一维数组*/function get($varName = ''){@$array = file($this->file);if (empty($array)) {return '';}foreach ($array AS $line){$line=trim($line);if (empty($line)||$line==""||substr($line,0,1)=='#'){continue;}$temp = explode("=",$line);$var_name = trim($temp[0]);$var_value = trim($temp[1]);if (empty($var_name)) {continue;}if(substr($var_value,-1)==';'){$var_value=substr($var_value,0,strlen($var_value)-1);}if(substr($var_value,0,1)=="'"&&substr($var_value,-1)=="'"){$var_value=substr($var_value,1,strlen($var_value)-2);}if(substr($var_value,0,1)=='"'&&substr($var_value,-1)=='"'){$var_value=substr($var_value,1,strlen($var_value)-2);}if ($varName != '' && $var_name == $varName) {return $var_value;}$vars[$var_name] = $var_value;}return $vars;}/*** 存储变量到配置文件中* 不删除配置文件中原有的变量，* 如果需要保存的变量在配置文件中已经存在，则覆盖该变量的值，否则追加存储** @param array $array 需要保存的数组变量，一维数组* @return bollen*/function save($array = ''){if ((!is_array($array)) || empty($array)) {return false;}if (!is_writable($this->file)) {die("File '{$this->file}' is not writeable, please CHMOD it to 777!");}$vars = $this->get();$vars = !empty($vars) ? array_merge($vars, $array) : $array;$str='';foreach ($vars AS $key => $value){$str .= trim($key) . ' = "' . trim($value).'"' . __CR__;}//dump($str);if (!empty($str)) {@$fd =&fopen($this->file,"w+");@fputs($fd,$str);@fclose($fd);}return true;}/** * 删除一个配置 * @param unknown_type $varName */function del($varName = ''){if(empty($varName)){return false;}if (!is_writable($this->file)) {die("File '{$this->file}' is not writeable, please CHMOD it to 777!");}$vars = $this->get();$str='';$flag=0;foreach ($vars as $key=>$value){if($key!=$varName){$str .= trim($key) . ' = "' . trim($value).'"' . __CR__;}else {$flag=1;}}if (!empty($str)&&$flag==1) {@$fd =&fopen($this->file,"w+");@fputs($fd,$str);@fclose($fd);}return true;}}

调用代码实例:

$ini = new fileConfigOp("venocap.conf"); //对象实例化$t1=$ini->get(); //获取所有变量名和值，返回：一维数组$t2=$ini->get("nic"); //获取某个变量的值，返回：字符串dump($t1);dump($t2);$array=array();$array['nic1']='eth0';$array['nic']='eth1';dump($ini->save($array));dump($ini->get());dump($ini->del('nic1'));dump($ini->get());

配置文件格式：

# network interface for capturingnic = "eth0"; # redirection URL for HTTP request in IPv4url = "http://www.veno2.com"; # redirection URL for HTTP request in IPv6url6 = "http://ipv6.veno2.com"; # libpcap filter, see tcpdump manual for reference# The following filter means capturing tcp target port 80, # excluding ip address 2001:dc7:eee4:1::98 (i.e. ipv6.veno2.com) and 221.122.51.98 (www.veno2.com)filter = "dst port 80 and ! ip6 host 2001:dc7:eee4:1::98 and ! ip host 221.122.51.98";# HTTP request containing the following User-Agent will be bypassedagent = "veno";# controlling log message level# logmask = 7; # trace message# logmask = 15; # highest verbosity