How do I create a Crosstab table with php mysql

Question

I have the following recordset:

Date     |Role      |Name
=============================
01/02/14 |Musician  |Bob
01/02/14 |Leader    |Jerry
01/02/14 |Singer          


        

Answer 1

    ';
        //initialize three arrays to hold the values
        $x_role = array();
        $y_date = array();
        $val_name = array();
        
        //store values from the database into three separate arrays NB theRole, 
        // theDate  and theName are the column names from the database
        foreach($data as $recordset)
        {
           $x_role[] =  $recordset->theRole;
           $y_date[] =  $recordset->theDate;    
           $val_name[$recordset->theRole][$recordset->theDate] = $recordset->theName;   
        }
        
        //get unique values for row and column and sort them if necessary
        $unique_x_role = array_unique($x_role);
        //asort($unique_x_role);    
        
        $unique_y_date = array_unique($y_date);
        //asort($unique_y_date);    
        
        // prints table - OUTPUT
        echo '
';
        echo '
';
        echo '
';
        echo '
';
        
        echo '';
        
        echo '';
        echo '';//prints 'ROLE" in upper left corner of table  
        foreach($unique_y_date as $theDate)
        {
           echo '';//prints column headings    
        }
        echo '';//closes column headings   
        
        foreach($unique_x_role as $theRole)
        {
            echo '';
            echo '';   //prints row title  
            foreach($unique_y_date as $theDate)
            {
                if(isset($val_name[$theRole][$theDate]))// checks if value exists
                {
                   $v =     $val_name[$theRole][$theDate];
                   echo '';  //prints name because it exists
                }
                else
                {
                    echo '';// prints a dash if  no name exists
                }
            }//foreach($y_date as $theDate)
            echo '';
        }//foreach($unique_x_role as $theRole)
        
        echo '
ROLE
'.$theDate.'
'.$theRole.'
'.$v.'
 - 
';
        echo '
';
        
 ?>