没有任何东西时填写表格行

I have a table, where the are filled if the user is present.

The JSON to check if he is present :

{"prenom":"Guillaume","nom":"HUART","date":"01-01-2019","heure":"06:00:00","dispo":"1","id":"1"},{"prenom":"Guillaume","nom":"HUART","date":"01-01-2019","heure":"07:00:00","dispo":"1","id":"1"},{"prenom":"Guillaume","nom":"HUART","date":"01-01-2019","heure":"08:00:00","dispo":"1","id":"1"},{"prenom":"Guillaume","nom":"HUART","date":"01-01-2019","heure":"09:00:00","dispo":"1","id":"1"},{"prenom":"Guillaume","nom":"HUART","date":"01-01-2019","heure":"10:00:00","dispo":"1","id":"1"}

So he appears in the table if dispo is 1.

Here is a pic of how it looks

And this is how I want it to look :

I want to have a single line per username, and if the user is not available, instead of nothing, a black div.

I have tried in PHP but I can't get the result I want.

So I tried in javascript but the same..

Is javascript a good langage to do what I want ? Or I should try in PHP ?

Thanks

When there is no value, add  . This will fill the table row (empty columns) with empty space.