note 84407 deleted from function.system by danbrown
| From: | danbrown@php.net | Date: | Mon, 14 Jul 2008 14:13:10 +0000 |
| Subject: | note 84407 deleted from function.system by danbrown | ||
| References: | 1 | Groups: | php.notes |
| Request: | Send a blank email to php-notes+get-141487@lists.php.net to get a copy of this message | ||
Note Submitter: zheyu dot gao at gmail dot com
----
one thing which is troubling me is some cmd does not return any output to the cmd window. for
example.
$cmd = 'matlab -r exit' ;
$ret = system($cmd, $retval);
echo count($ret);
--------output result---------
$ret = ' '
$retval = 0
-----------------------------
therefor I am thinking is it good to use $retval == 0 to detect if the pervious matlab process is
done. for example.
if ($retval == 0){
$next_cmd = 'matlab -r exit' ;
$ret = system($next_cmd, $retval);
}