php 得到、修改、删除、配置文件

矫情吗；* 2022-03-27 09:44 228阅读 0赞

功能实现源代码：

<?php
    define("__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 capturing
    nic = "eth0"; 
    
    # redirection URL for HTTP request in IPv4
    url = "http://www.veno2.com"; 
    
    # redirection URL for HTTP request in IPv6
    url6 = "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 bypassed
    agent = "veno";
    
    # controlling log message level
    # logmask = 7; # trace message
    # logmask = 15; # highest verbosity