<?php
/*
 * Common Class 
 * by lijg 20181029
 */

class CommonLib{
    public function __construct(){
        //TODO
    }
    
    //rearrange array for multiple upload array
    public function reArrArr($arr = array()){
        if(empty($arr)){
            return false;
        }
        $newArr = array();
        foreach($arr as $fkey => $fval){
            foreach($fval as $fk => $fv){
                $newArr[$fk][$fkey] = $fv;
            }
        }
        return $newArr;
    }
    
    public function my_filter_input($ipt){
        if($ipt == null){
            return false;
        }
        $ipt = trim($ipt);
        $ipt = stripslashes($ipt);
        $ipt = htmlspecialchars($ipt);
        
        return $ipt;
    }
    
    public function getIp(){
        $ip = '';
        $m = array();
        if(getenv('HTTP_CLIENT_IP') && strcasecmp(getenv('HTTP_CLIENT_IP'), 'unknown')) {
            $ip = getenv('HTTP_CLIENT_IP');
        } elseif(getenv('HTTP_X_FORWARDED_FOR') && strcasecmp(getenv('HTTP_X_FORWARDED_FOR'), 'unknown')) {
            $ip = getenv('HTTP_X_FORWARDED_FOR');
        } elseif(getenv('REMOTE_ADDR') && strcasecmp(getenv('REMOTE_ADDR'), 'unknown')) {
            $ip = getenv('REMOTE_ADDR');
        } elseif(isset($_SERVER['REMOTE_ADDR']) && $_SERVER['REMOTE_ADDR'] && strcasecmp($_SERVER['REMOTE_ADDR'], 'unknown')) {
            $ip = $_SERVER['REMOTE_ADDR'];
        }
        $ip = preg_match( '/[\d\.]{7,15}/',$ip, $m)?$m[0]:'';
        return $ip;
    }
    
    public function __destruct(){
        //TODO
    }
}