Mysql insert not working properly

[eluser]vitoco[/eluser]
Adding quotes to an array when imploding

Code:

$sql  = "INSERT INTO `product_category` (`prduct_id`, `category_id`) VALUES " ;

foreach( $array as $row )
{
    $sql .= "('".implode("','" , $row )."')," ;
}

// REMOVE LAST ","

$sql = trim( $sql , ',' ) ;

Saludos