php - Not Able to use ORDER by RAND() LIMIT 4 after users.user_id=".$_SESSION['user_id'] -

I'm not able to use

  order by rand () border 5  
  ['user_id']  

Is there any way to do this, please help.

  $ sqlstate = "Choose from questions *, where users.category_id = questions.category_id and users.user_id =". $ _ Session ['user_id'] Order by rand () Border 5;  

You need to fix the string and the containeration.

  $ sqlstate = "Choose from the questions *, where users are users.category_id = questions.category_id and users.user_id =". $ _ Session ['user_id']. "RAND () Range 5 by Order";  

Alternatively, since you are using PHP, you can only use the variable within double quotes:

  $ Sqlstate = "Choose from questions *, where users.category_id = queries.category_id and users.user_id = $ _ session ['user_id'] rand sequence () range 5";