php cli 方式 在crotab中运行解决

/var/www/html/bt/e/BtSys:.:/usr/share/pear:/usr/share/phpPHP Warning: require(../class/connect.php): failed to open stream: No such file or directory in /var/www/html/bt/e/BtSys/torrents-scrape.php on line 17 
PHP Fatal error: require(): Failed opening required '../class/connect.php' (include_path='/var/www/html/bt/e/BtSys:.:/usr/share/pear:/usr/share/php') in /var/www/html/bt/e/BtSys/torrents-scrape.php on line 17 
 
尝试解决方法1 加入如下代码 

代码 
 代码如下:

// setting include path 
$cur_dir=getcwd(); 
$cur_dir=$basedir = dirname(__FILE__); 
$path = ini_get('include_path'); 
ini_set("include_path", "$cur_dir:$path"); 
$path = ini_get('include_path'); 
//echo $path; 
require(../class/a.php) 
require(../class/b.php) 
............... 
 
运行失败 

尝试解决方法2 加入如下代码 
 代码如下:

$cur_dir = dirname(__FILE__); 
chdir($cur_dir); 
require(../class/a.php) 
require(../class/b.php) 
 
运行成功 
总结: 在require 时，如果是相对目录，在crontab 中运行php脚本，要进入到脚本所在目录才可以