cannot deploy to subdomain

[zzjin]

when using xx.com/phpredsmin/oublic/index.php everything work ok
but gitve it a subdomain like phpredismin.xx.com return 500 error with no error log
apache documentroot set to /path/to/phpredismin/public

[sasanrose]

Using the following apache configuration

<VirtualHost *:80>
    ServerName test.phpredmin.com
    ServerAlias test.phpredmin.com
    ServerAdmin sasan@local
    DocumentRoot /var/www/phpredmin/public
    <Directory /var/www/phpredmin/public>
        Options Indexes FollowSymLinks MultiViews
        AllowOverride all
        Order allow,deny
        allow from all
    </Directory>

    ScriptAlias /cgi-bin/ /usr/lib/cgi-bin/

    ErrorLog /var/log/apache2/error.log

    LogLevel warn

    CustomLog /var/log/apache2/access.log combined
    ServerSignature On
</VirtualHost>

I don't face any problem. Can you give me more details? for example your apache configuration + Did you check the logs located at log directory?

P.S: Sorry for delay

[zzjin]

by added:
<Directory /var/www/phpredmin/public>
Options Indexes FollowSymLinks MultiViews
AllowOverride all
Order allow,deny
allow from all

it works~ thx~