php常用函数封装

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1、常用函数封装1234567891011121314151617181920212223242526272829303132333435363738394041

2、ED_FOR']);        $pos= array_search('unknown',$arr);        if(false!==$pos)unset($arr[$pos]);        $ip  = trim($arr[0]);    }elseif(isset($_SERVER['HTTP_CLIENT_IP'])){        $ip=$_SERVER['HTTP_CLIENT_IP'];    }elseif(isset($_SERVER['REMOTE_ADDR'])){       

3、 $ip=$_SERVER['REMOTE_ADDR'];    }    //IP地址合法验证    $ip=(false!==ip2long($ip))?$ip:'0.0.0.0';    return$ip;} /** *获取在线IP *@returnString */functiongetOnlineIp($format=0){    global$S_GLOBAL;    if(empty($S_GLOBAL['onlineip'])){        if(getenv('HTTP_CLIENT_IP')

4、&&strcasecmp(getenv('HTTP_CLIENT_IP'),'unknown')){            $onlineip=getenv('HTTP_CLIENT_IP');        }elseif(getenv('HTTP_X_FORWARDED_FOR')&&strcasecmp(getenv('HTTP_X_FORWARDED_FOR'),'unknown')){            $onlineip=getenv('HTTP_X_FORWARDED_FOR');        }

5、elseif(getenv('REMOTE_ADDR')&&strcasecmp(getenv('REMOTE_ADDR'),'unknown')){            $onlineip=getenv('REMOTE_ADDR');        }elseif(isset($_SERVER['REMOTE_ADDR'])&&$_SERVER['REMOTE_ADDR']&&strcasecmp($_SERVER['REMOTE_ADDR'],'unknown')){4243444546474849505152

6、535455565758596061626364656667686970717273747576777879808182838485            $onlineip=$_SERVER['REMOTE_ADDR'];        }        preg_match("/[d.]{7,15}/",$onlineip,$onlineipmatches);        $S_GLOBAL['onlineip']=$onlineipmatches[0]?$onlineipmatches[0]:'unkno

7、wn';    }     if($format){        $ips=explode('.',$S_GLOBAL['onlineip']);        for($i=0;$i<3;$i++){            $ips[$i]=intval($ips[$i]);        }        returnsprintf('%03d%03d%03d',$ips[0],$ips[1],$ips[2]);    }else{        return$S_GLOBAL['onlineip'];    

8、}}   /** *获取url *@return[type][description] */functiongetUrl(){  $pageURL='http';  if(isset($_SERVER["HTTPS"])&&$_SERVER["HTTPS"]=="on"){    $pageURL.="s";  }  $pageURL.=":/