Run multiple SQL query in PHP when using SQL variables

Some times you may need to run mulitple query in PHP to obtain the query result you want. eg

SELECT `column` INTO @column FROM table LIMIT 1;SET @query = CONCAT("SELECT DISTINCT table2.",@column,"  FROM table2");PREPARE stmt FROM @query;EXECUTE stmt;

Here is an example function

function doMultiQuery{if(mysqli_multi_query($con, $query)){  do {     if ($result = mysqli_store_result($con)) {           if(mysqli_num_rows($result)>0)           {                 return $result;           }           @mysqli_free_result($con);     }   } while (@mysqli_next_result($con));}}