Php – pecl/mongo requires PHP (version >= 5.3.0, version <= 5.99.99), installed version is 7.0.4-7ubuntu2.1 No valid packages found install failed

It means there is an extension=... or zend_extension=... line in one of your php configuration files (php.ini, or another close to it) that is trying to load that extension : ixed.5.2.lin

Unfortunately that file or path doesn't exist or the permissions are incorrect.

1. Try to search in the .ini files that are loaded by PHP (phpinfo() can indicate which ones are) - one of them should try to load that extension.
2. Either correct the path to the file or comment out the corresponding line.

The assignment X downto Y => 'A' is correct when A is a element of array. For example, this snippet is correct:

1 downto 0 => '1',

And this snippet is wrong:

1 downto 0 => "01",

Therefore, your assignment is illegal. As your code, you can assign as:

DataOut <= (                        5 downto 3 =>'1',     
                                    2 downto 1 =>'0',     
                                    0 => '1',  
                                    others=>'0' 
                                    );

If you want to access/assign by a feild of array, you can use concatenation:

DataOut <= Something_0 & Something_1 & "01";

While Something_* is std_logic_vector