php获取linux命令结果的实例

1. publicfunctionget_server_ip() { 
2.     if(PHP_SAPI ==='cli'){ 
3.         $buffer=""; 
4.          $handle= popen("ifconfig eth0|grep 'inet addr'|awk -F'[ :]' '{print $13}'",'r'); 
5.             while(!feof($handle)) { 
6.              $buffer.=fgets($handle); 
7.             } 
8.             pclose($handle); 
9.          $server_ip= rtrim($buffer); 
10.     }else{ 
11.         if(isset($_SERVER)) { 
12.           if($_SERVER['SERVER_ADDR']) { 
13.            $server_ip=$_SERVER['SERVER_ADDR']; 
14.           }else{ 
15.            $server_ip=$_SERVER['LOCAL_ADDR']; 
16.           } //Vevb.com 
17.          }else{ 
18.           $server_ip=getenv('SERVER_ADDR'); 
19.          } 
20.     } 
21.      return$server_ip; 
22.     }