How do you manage SQL Queries

Question

At the moment my code (PHP) has too many SQL queries in it. eg...

// not a real example, but you get the idea...
$results = $db->GetResults(\"SELECT * FRO         


        

Answer 1

I try to use fairly generic functions and just pass the differences in them. This way you only have one function to handle most of your database SELECT's. Obviously you can create another function to handle all your INSERTS.

eg.

function getFromDB($table, $wherefield=null, $whereval=null, $orderby=null) {
    if($wherefield != null) { 
        $q = "SELECT * FROM $table WHERE $wherefield = '$whereval'"; 
    } else { 
        $q = "SELECT * FROM $table";
    }
    if($orderby != null) { 
        $q .= " ORDER BY ".$orderby; 
    }

    $result = mysql_query($q)) or die("ERROR: ".mysql_error());
    while($row = mysql_fetch_assoc($result)) {
        $records[] = $row;
    }
    return $records;
}

This is just off the top of my head, but you get the idea. To use it just pass the function the necessary parameters:

eg.

$blogposts = getFromDB('myblog', 'author', 'Lewis', 'date DESC');

In this case $blogposts will be an array of arrays which represent each row of the table. Then you can just use a foreach or refer to the array directly:

echo $blogposts[0]['title'];