Implode 2 separate arrays?

I have a script with a query that gathers information from a db from two separate tables using a join. Now I want to inse开发者_StackOverflowrt those 2 arrays and their values side by side inside a new table.

$query = "INSERT INTO `new_table` 
            (column_a, column_b) 
          VALUES 
            (implode(something,$array_a), implode(something,$array_b))"

Obviously the syntax isn't right, but I was wondering if it was possible or if I'm on the wrong track. I tried a few queries and couldn't get them to line up for an insert - it exploded them one at a time.

The answer to this one is, as you would expect, dependent on exactly what you are trying to achieve.

I will assume that your two arrays are as follows (for the purposes of demonstration):

$arrayA = array(
  'Alpha' ,
  'Bravo' ,
  'Charlie'
);
$arrayB = array(
  'Zulu' ,
  'Yankee' ,
  'Xray'
);

Now, if you are wanting to place these values into a table (called the_table for ease of reference), so that they create a single row like so

column_a              | column_b
"Alpha,Bravo,Charlie" | "Zulu,Yankee,Xray"

Then the SQL you would want to produce is

INSERT INTO `the_table` ( `column_a` , `column_b` )
VALUES ( "Alpha,Bravo,Charlie" , "Zulu,Yankee,Xray" )

And the PHP to produce that SQL could be

$sqlTpl = 'INSERT INTO `the_table` ( `column_a` , `column_b` )
           VALUES ( "%s" , "%s" )';
$sqlStr = sprintf( $sqlTpl ,
            implode( ',' , $arrayA ) ,
            implode( ',' , $arrayB ) );

Now, if you were, instead, wanting to produce a set of matching rows, with one pair from each of the two arrays, like so

column_a  | column_b
"Alpha"   | "Zulu"
"Bravo"   | "Yankee"
"Charlie" | "Xray"

The SQL would be

INSERT INTO `the_table` ( `column_a` , `column_b` )
VALUES ( "Alpha" , "Zulu" ) ,
       ( "Bravo" , "Yankee" ) ,
       ( "Charlie" , "Xray" )

And the PHP to produce that could be

$sqlTpl = 'INSERT INTO `the_table` ( `column_a` , `column_b` )
           VALUES ( %s )';
$sqlArr = array();
foreach( $arrayA as $k => $v )
  $sqlArr[] = '"'.$arrayA[$k].'" , "'.$arrayB[$k].'"';
$sqlStr = sprintf( $sqlTpl ,
            implode( ' ) , ( ' , $sqlArr ) );

Use:

$query = sprintf("INSERT INTO `new_table` 
                    (column_a, column_b) 
                  VALUES 
                    ('%s', '%s')",
                  implode(something, $array_a),
                  implode(something, $array_b));

That said, typically not a great idea to be storing denormalized data.