please help

[dizyn]

Please see this code and help me how
$this->sql = $q;
$this->log();
$r = mysql_query($q);
if (!($r)) {
$this->error_log();
}
$num=mysql_num_rows($r);
$i=1;
while ($row=mysql_fetch_object($r)) {
$cont[$i] = $row;
$i++;
}

will work. I am new to OOP it would be good if someone explain this bunch of code to me.
thanks much.
[code]
<?php
class Dbase
{

function Dbase(){
include ("connection.php");
$this->dbLink=$dbLink;
}

function select($retField, $table, $where="", $groupby="", $orderby="", $limit="") {
$fields = implode(",", $retField);
if ($where!="") {
$q = "select $fields from $table WHERE $where";
} else {
$q = "select $fields from $table";
}
if ($groupby!="") {
$q .= " GROUP BY $groupby";
}
if ($orderby!="") {
$q .= " ORDER BY $orderby";
}
if ($limit!="") {
$q .= " LIMIT $limit";
}

//return $q;
//if($orderby == 'ts_datAdded DESC'){
// echo $q."<br><br>";exit;}
$this->sql = $q;
$this->log();
$r = mysql_query($q);
if (!($r)) {
$this->error_log();
}
$num=mysql_num_rows($r);
$i=1;
while ($row=mysql_fetch_object($r)) {
$cont[$i] = $row;
$i++;
}
if (mysql_num_rows($r)>0) {

// echo print_r($cont);
// exit;

return $cont;
}
}
}
?>
[/code]

mod edit : Please use code tags

[ignace]

[code]
<?php
// Declare the class 'Dbase'
class Dbase
{

function Dbase(){ // Class constructor
include ("connection.php"); // strange place to include a file
$this->dbLink=$dbLink; // this adds the $dbLink to the class property dbLink
}

function select($retField, $table, $where="", $groupby="", $orderby="", $limit="") {
$fields = implode(",", $retField);
if ($where!="") {
$q = sprintf("select %s from %s WHERE %s", $fields, $table, $where); // makes it a bit more secure
} else {
$q = sprintf("select %s from %s", $fields, $table);
}
if ($groupby!="") {
$q .= sprintf(" GROUP BY %s", $groupby); // adds a group by to the current query (put duplicates together)
}
if ($orderby!="") {
$q .= sprintf(" ORDER BY %s", $orderby); // adds a order by to the current query (orders the result by $orderby)
}
if ($limit!="") {
$q .= sprintf(" LIMIT %s", $limit); // limits the result to a certain number
}

//return $q;
//if($orderby == 'ts_datAdded DESC'){
// echo $q."<br><br>";exit;}
$this->sql = $q; // adds the query to the class property sql
$this->log(); // executes class method log(); , however this method is not in the current class
$r = mysql_query($q); // sends the current sql syntax to the database for execution , however why do you use $q while you assigned it to $this->sql ??
if (!($r)) { // checks if mysql_query(); was executed succesfully , if (!($r = mysql_query($q)) , however i also would assign $r to a class property
$this->error_log(); // executes the class method error_log();
}
$num=mysql_num_rows($r); // counts the total rows returned
$i=1;
while ($row=mysql_fetch_object($r)) { // why do you fetch it as an object when you assign it to an array ?
$cont[$i] = $row;
$i++;
}
if (mysql_num_rows($r)>0) { // double work , use your declared/initialised $num instead , if ($num > 0) ...

// echo print_r($cont);
// exit;

return $cont;
}
}
}
?>
[/code]