PHP通用返回值设置

 1 <?php
 2 define("return_val", "return array('code' => 0, 'msg' => '', 'data' => '');");
 3 
 4 define("RETURN_SUCCESS",        0); 
 5 define("RETURN_RUNTIME_ERR",    1); 
 6 define("RETURN_FILE_NOT_EXIST", 2); 
 7 
 8 class ReturnConf{
 9     public static function CommonReturn(){
10         return eval(return_val);
11     }   
12 }
13 ?>

 1 <?php
 2 require_once("Return.conf.php");
 3 
 4 function get_file_line($filename){
 5     $result = ReturnConf::CommonReturn();
 6     
 7     $cmd = "wc -l $filename | awk '{print $1}'";
 8     exec($cmd, $output, $code);
 9     if (RETURN_SUCCESS !== $code){
10         $result['code'] = RETURN_RUNTIME_ERR;
11         $result['msg']  = "exec $cmd err";
12         return $result; 
13     }   
14 
15     $result['data'] = $output[0];
16     return $result;
17 }
18 
19 print_r(get_file_line("test.php"));
20 ?>