Laravel 4, PHP 5.3: Disabling magic_quotes_gpc

Question

Tried to add php_flag magic_quotes_gpc 0 to .htaccess file:

<IfModule mod_rewrite.c>
    <IfModule mod_negotiation.c>
        Options -MultiViews
    </IfModule>

    RewriteEngine On

    # Redirect Trailing Slashes...
    RewriteRule ^(.*)/$ /$1 [L,R=301]

    # Handle Front Controller...
    RewriteCond %{REQUEST_FILENAME} !-d
    RewriteCond %{REQUEST_FILENAME} !-f
    RewriteRule ^ index.php [L]    
</IfModule>

php_flag magic_quotes_gpc 0

So i got 500 (Internal Server Error).

Tried to add magic_quotes_gpc = Off to php5.ini file according to Godaddy hosting support, but it didn't work at all.