对于 perl cgi 脚本,这两者之间有什么区别(技术上)?
#!/usr/bin/perl
use CGI;
$cgi = new CGI;
print $cgi->header(),
$cgi->start_html(),
$cgi->pre($cgi->param()),
$cgi->end_html();
和
#!/usr/bin/perl
use CGI;
$cgi = new CGI;
print $cgi->header(),
$cgi->start_html(),
$cgi->pre($ENV{'QUERY_STRING'}),
$cgi->end_html();