class does not return a value

[Phil Powell]

My first time working with a PHP class, and after 6 hours of working out the
kinks I am unable to return a value from the class, so now I appeal to the
general audience what on earth did I do wrong this time?

This is the code the retrieves the values:

if (($hasRegistere d || $hasPreRegister ed) && !empty($uplinen umber)) {
// CHECK TO SEE IF UPLINE NUMBER IS A VALID NUMBER
$regNumberGener ator = new RegNumberGenera tor($uplinenumb er, $email,
$dbConn);
if (!$regNumberGen erator->isValidUplinen umber()) {
$hasRegistered = 0; $hasPreRegister ed = 0;
$errorMsg .= $font . '<font color=cc0000><l i>Du m&#229;ste skicka geltig
upline nr., takk!' .
'</li></font></font><p>';
// ERROR PRODUCED UPON REG OR PRE-REG MODE - FORM WILL BE REPOPULATED BY
$_POST ELEMENTS
// NO NEED FOR DB ANY FURTHER

@mysql_free_res ult($query); // FREE RESOURCES BUT SUPPRESS WARNINGS IF
NON-SELECT QUERY
mysql_close($db Conn); // CLOSE DB CONNECTION
} else {
$registrationNu mber = $regNumberGener ator->getRegNumber() ;
$registrationNu mberForUsername =
$regNumberGener ator->getRegNumberDe cDigits($regist rationNumber);
$registrationNu mberForEmail =
$regNumberGener ator->getRegNumberDe cDigits($regist rationNumber, '-');
}
}

And here is the class itself:



/*--------------------------------------------------------------------------
-----------------
Class RegNumberGenera tor - this class consists of the following:

1. Method isValidUplinenu mber - Boolean return if the upline number is a
valid one
according to a db call

2. Method getRegNumber - String method to return the hexidecimal
registration number
3. Method getRegNumberDec Digits - String method to return the reg number
as decimal digits
4. Private method hasFoundNextAva ilRegNumber - Boolean method that
searches for the inputted
number as a registration
number in the db
5. Private method incrUplinenumbe r - String method to increase
next-to-last digit of
upline number by 1 (to get to the
next "leg")

Input parameters:

1. $dbConn - your database connection resource link
2. $uplinenumber - your upline number
3. $email - your email address
--------------------------------------------------------------------------
------------------*/
class RegNumberGenera tor {

// STRING TO HOUSE GENERATED REGISTRATION NUMBER BASED ON UPLINE #
var $paddedUplinenu mber = '';
var $regNumber = '';
var $canStopMethod = 0; // BOOLEAN TO DETERMINE TO STOP SEARCHING FOR
NEXT VALID REG #

// CONSTRUCTOR
function RegNumberGenera tor($uplinenumb er, $email, $dbConn) {
$this->uplinenumber = $uplinenumber;
$this->email = $email;
$this->dbConn = $dbConn;
}

// BOOLEAN METHOD
function isValidUplinenu mber() {

// CHECK TO SEE IF SINGLE-DIGIT UPLINENUMBER IS NUMERIC VALUE ONLY
if (strlen($this->uplinenumber ) == 0 ||
(strlen($this->uplinenumber ) == 1 &&
!is_numeric($th is->uplinenumber ))
) {
$canStopMethod = 1;
return 0;
}

// CHECK TO SEE IF UPLINENUMBER IS VALID (IS HEXADECIMAL NUMBER STRING)
if (preg_match('/[^a-fA-F0-9]+/i', $this->uplinenumber ) &&
!$canStopMethod ) {
$canStopMethod = 1;
return 0;
}

// CHECK TO SEE THAT IF THIS IS A TOP UPLINENUMBER THAT IT IS A VALID
TOP UPLINE NUMBER IN DB
if (strlen($this->uplinenumber ) == 1 && !$canStopMethod ) {
$sql = 'SELECT nnet_user_email FROM nnet_top_upline number ' .
'WHERE nnet_user_uplin enumber = ' . (int)$this->uplinenumber ;
$query = mysql_query($sq l, $this->dbConn) or die('Could not perform
query');
if (mysql_num_rows ($query) == 0) {
$canStopMethod = 1;
return 0; // NOT VALID TOP UPLINENUMBER
}
}

// CHECK TO SEE IF SINGLE-DIGIT UPLINENUMBER WAS ENTERED BY A TOP USER
(RAGNAR, DAVID, ETC)
if (strlen($this->uplinenumber ) == 1 && !$canStopMethod ) {
if ($row = mysql_fetch_row ($query)) {
$topUserEmail = $row[0]; // OBTAIN TOP USER EMAIL ADDRESS FOR
COMPARISON
$sql = 'SELECT nnet_userid FROM nnet_usermetada ta ' .
'WHERE nnet_user_email = \'' . $this->email . '\' ' .
' AND nnet_user_regis trationnumber = \'' . $this->uplinenumber
.. '\' ';
$query = mysql_query($sq l, $this->dbConn) or die('Could not perform
query #2');
if (mysql_num_rows ($query) > 0) {
// THEY ARE A TOP USER BUT ALREADY FOUND IN USERMETADATA - RETURN
FALSE
$canStopMethod = 1;
return 0;
} elseif (strcmp($topUse rEmail, $this->email) == 0) {
// THEY ARE A TOP USER NOT FOUND YET IN USERMETADATA - SET REG # TO
UPLINE # & SET TRUE
$regNumber = $this->uplinenumber ;
$canStopMethod = 1;
return 1;
}
}
}

// CHECK TO SEE IF THIS IS SOMEONE'S REGISTRATION NUMBER
if (!$canStopMetho d &&
!$this->hasFoundNextAv ailRegNumber($t his->uplinenumber )) {
$canStopMethod = 1;
return 0;
}

// THIS IS SOMEONE'S REG # - WE NOW HAVE TO CALCULATE THE NEXT AVAILABLE
LEG
if (!$canStopMetho d) {
$paddedUplinenu mber .= $this->uplinenumber . '11';
if (!$this->hasFoundNextAv ailRegNumber($p addedUplinenumb er)) {
$canStopMethod = 1;
return 0;
}
// KEEP INCREASING NEXT_TO_LAST DIGIT BY 1 UNTIL NO LONGER FOUND IN DB
AS REG #
while ($this->hasFoundNextAv ailRegNumber($p addedUplinenumb er))
$paddedUplinenu mber = $this->incrUplinenumb er($paddedUplin enumber);
$regNumber = $paddedUplinenu mber;
return 1;
}
}


// STRING METHOD
function incrUplinenumbe r($myUplinenumb er) {
$hexDigit = substr($myUplin enumber, strlen($myUplin enumber) - 2, 1); //
NEXT_TO_LAST DIGIT
$nextDecDigit = (int)hexdec($he xDigit) + 1;
return substr($myUplin enumber, 0, strlen($myUplin enumber) - 2) .
dechex($nextDec Digit) .
substr($myUplin enumber, strlen($myUplin enumber) - 1, 1);
}


// BOOLEAN METHOD
function hasFoundNextAva ilRegNumber($pa ddedUplinenumbe r) {
global $dbConn;
$sql = 'SELECT nnet_userid FROM nnet_usermetada ta ' .
'WHERE nnet_user_regis trationnumber = \'' . $paddedUplinenu mber .
'\' ';
$query = mysql_query($sq l, $dbConn) or die('Could not perform query
#3');
if (mysql_num_rows ($query) == 0) {
// NO ONE HAS THIS UPLINE # AS THEIR REG # - INVALID UPLINE NUMBER
return 0;
} else {
return 1;
}
}


// STRING METHOD TO RETURN HEX REG NUMBER
function getRegNumber() {
return $regNumber;
}

// STRING METHOD TO RETURN DECIMAL-DIGITS REG NUMBER (NOT TRUE NUMBER)
WITH OPTIONAL CHAR
// DIVIDER

function getRegNumberDec Digits($myRegNu mber, $divider = '') {
for ($i = 0; $i < strlen($myRegNu mber); $i++)
$decRegNumber .= '' . hexdec(substr($ myRegNumber, $i, 1)) . $divider;
return $decRegNumber;
}
}
//---END OF
CLASS-----------------------------------------------------------------------
----

Phil

[Jon Kraft]

Re: class does not return a value

Phil Powell <soazine@erols. com> wrote:
[color=blue]
> My first time working with a PHP class, and after 6 hours of working out
> the kinks I am unable to return a value from the class, so now I appeal to
> the general audience what on earth did I do wrong this time?[/color]

[snip]
[color=blue]
> // STRING METHOD TO RETURN HEX REG NUMBER
> function getRegNumber() {
> return $regNumber;
> }[/color]

Shouldn't this be:

function getRegNumber() {
return $this->regNumber;
}

HTH;
JOn

[Phil Powell]

Re: class does not return a value

Yep, figured that one out on my own. I can't find any online documentation
on PHP classes, where should I look? www.php.net is Macedonian to me at
times.

Phil

"Jon Kraft" <jon@jonux.co.u k> wrote in message
news:bjhivj$jdv 2f$2@ID-175424.news.uni-berlin.de...[color=blue]
> Phil Powell <soazine@erols. com> wrote:
>[color=green]
> > My first time working with a PHP class, and after 6 hours of working out
> > the kinks I am unable to return a value from the class, so now I appeal[/color][/color]
to[color=blue][color=green]
> > the general audience what on earth did I do wrong this time?[/color]
>
> [snip]
>[color=green]
> > // STRING METHOD TO RETURN HEX REG NUMBER
> > function getRegNumber() {
> > return $regNumber;
> > }[/color]
>
> Shouldn't this be:
>
> function getRegNumber() {
> return $this->regNumber;
> }
>
> HTH;
> JOn[/color]

[Jon Kraft]

Re: class does not return a value

Phil Powell <soazine@erols. com> wrote:
[color=blue]
> Yep, figured that one out on my own. I can't find any online
> documentation on PHP classes, where should I look? www.php.net is
> Macedonian to me at times.[/color]

Google is generally a good start ;)
Here is a good article covering classes in PHP:

Part 1:

http://www.zend.com/zend/tut/tutorial-johnson.php

Part2:

http://www.zend.com/zend/tut/tutorial-johnson2.php

HTH;
JOn