[RESOLVED] defining a function

[lucilue2003]

class sql_db
{

var $db_connect_id;
var $query_result;
var $row = array();
var $rowset = array();
var $num_queries = 0;
var $in_transaction = 0;

//
// Constructor
//
function sql_db($sqlserver, $sqluser, $sqlpassword, $database, $persistency = true)
{
	$this->persistency = $persistency;
	$this->user = $sqluser;
	$this->password = $sqlpassword;
	$this->server = $sqlserver;
	$this->dbname = $database;

Can you guys please help me understand this function declaration
function sql_db($sqlserver, $sqluser, $sqlpassword, $database, $persistency = true)
$this->persistency = $persistency; // I believe this is refering to the variable declared in the function declaration, but where is the =$persistency coming from ?

Also, why is the assignment statement in the function declaration, why not inside the body ?

Thanks.

[toplay]

It's simply expecting five arguments to be passed to it with the last one being optional. If $persistency isn't being passed, it will default to a value of TRUE. So, "$persistency = true" is a way you define an argument as being optional.

The values passed are then assigned to class variables using this syntax: $this->variable_name

hth.

[LoganK]

Great answer! Lucilue, is that what you need?