Adding fields to an object in PHP 4

[jerrygarciuh]

Hello,

I have an object that looks like this:

shelterrental Object
(
[connectionError] =>
[changedVals] => Array ( )
[dbh] => Resource id #2
[id] => 1 [shelter] => 1
[renter] => Kevin Shakakhnopolis
[contact] => 504-899-4028
[date] => 2005-04-11
)

I would like to add a field or two under certain circumstances. I have
tried

$obj->newfield = 'xxx';
$obj->{'newfield'} = 'yyy';
$obj['newfield'] = 'zzz';

None of these methods work.

What is the correct syntax to add a field to an object in PHP 4?

TIA!

jg

[Janwillem Borleffs]

Re: Adding fields to an object in PHP 4

jerrygarciuh wrote:[color=blue]
> I would like to add a field or two under certain circumstances. I
> have tried
>
> $obj->newfield = 'xxx';
> $obj->{'newfield'} = 'yyy';
>[/color]

Both of these should work fine, do you get any error messages?

It would also be useful to see some of the code that generates the initial
object.


JW

[jerrygarciuh]

Re: Adding fields to an object in PHP 4

"Janwillem Borleffs" <jw@jwscripts.c om> wrote in message
news:42599403$0 $2277$dbd41001@ news.euronet.nl ...[color=blue]
> jerrygarciuh wrote:[color=green]
>> I would like to add a field or two under certain circumstances. I
>> have tried
>>
>> $obj->newfield = 'xxx';
>> $obj->{'newfield'} = 'yyy';
>>[/color]
>
> Both of these should work fine, do you get any error messages?
>
> It would also be useful to see some of the code that generates the initial
> object.
>
>
> JW[/color]


JW,

Thank you for your rapid reply! Here is the function that builds the
objects from mySQL records. I am thinking my problem is actually caused by
using foreach on the array of objects and in PHP 4 I can't pass reference
like foreach ($arr as &$v).

Any advice most welcome!

jg

function &buildObj($resu lt, $classname) {
if ($result) {
while($row = mysql_fetch_ass oc($result)) {
if ($row === null) return null;

/* Create the object */
$obj =& new $classname;

/* Explode the array and set the objects's instance data
*/
foreach($row as $key => $value)
{
$obj->{$key} = $value;
}
$objs[] = $obj;
}
return $objs;
} // end if ($result)
}

[jerrygarciuh]

Re: Adding fields to an object in PHP 4


"jerrygarci uh" <designs@no.spa m.nolaflash.com > wrote in message
news:IDg6e.965$ H53.255@lakerea d05...[color=blue]
> "Janwillem Borleffs" <jw@jwscripts.c om> wrote in message
> news:42599403$0 $2277$dbd41001@ news.euronet.nl ...[color=green]
>> jerrygarciuh wrote:[color=darkred]
>>> I would like to add a field or two under certain circumstances. I
>>> have tried
>>>
>>> $obj->newfield = 'xxx';
>>> $obj->{'newfield'} = 'yyy';
>>>[/color]
>>
>> Both of these should work fine, do you get any error messages?
>>
>> It would also be useful to see some of the code that generates the
>> initial object.
>>
>>
>> JW[/color]
>
>
> JW,
>
> Thank you for your rapid reply! Here is the function that builds the
> objects from mySQL records. I am thinking my problem is actually caused
> by using foreach on the array of objects and in PHP 4 I can't pass
> reference like foreach ($arr as &$v).
>
> Any advice most welcome!
>
> jg
>
> function &buildObj($resu lt, $classname) {
> if ($result) {
> while($row = mysql_fetch_ass oc($result)) {
> if ($row === null) return null;
>
> /* Create the object */
> $obj =& new $classname;
>
> /* Explode the array and set the objects's instance data
> */
> foreach($row as $key => $value)
> {
> $obj->{$key} = $value;
> }
> $objs[] = $obj;
> }
> return $objs;
> } // end if ($result)
> }
>[/color]

My tests confirm that my problem is that foreach operates on a copy and i
need to pass by reference or use while().

[Janwillem Borleffs]

Re: Adding fields to an object in PHP 4

jerrygarciuh wrote:[color=blue]
> Thank you for your rapid reply! Here is the function that builds the
> objects from mySQL records. I am thinking my problem is actually
> caused by using foreach on the array of objects and in PHP 4 I can't
> pass reference like foreach ($arr as &$v).
>[/color]

Passing arguments by reference to foreach would only be a benefit if you
want to modify them.

The problem is probably that you are doing something like:

$obj = buildObj($resul t, "stdClass") ;
$obj->foo = 'bar';

This obviously doesn't work, because buildObj isn't returning an object, but
an array of objects.

If you would do something like the following, it should work fine:

$obj[0]->foo = 'bar';


JW

[jerrygarciuh]

Re: Adding fields to an object in PHP 4:: Solution


"jerrygarci uh" <designs@no.spa m.nolaflash.com > wrote in message
news:rNg6e.967$ H53.934@lakerea d05...[color=blue]
>
> "jerrygarci uh" <designs@no.spa m.nolaflash.com > wrote in message
> news:IDg6e.965$ H53.255@lakerea d05...[color=green]
>> "Janwillem Borleffs" <jw@jwscripts.c om> wrote in message
>> news:42599403$0 $2277$dbd41001@ news.euronet.nl ...[color=darkred]
>>> jerrygarciuh wrote:
>>>> I would like to add a field or two under certain circumstances. I
>>>> have tried
>>>>
>>>> $obj->newfield = 'xxx';
>>>> $obj->{'newfield'} = 'yyy';
>>>>
>>>
>>> Both of these should work fine, do you get any error messages?
>>>
>>> It would also be useful to see some of the code that generates the
>>> initial object.
>>>
>>>
>>> JW[/color]
>>
>>
>> JW,
>>
>> Thank you for your rapid reply! Here is the function that builds the
>> objects from mySQL records. I am thinking my problem is actually caused
>> by using foreach on the array of objects and in PHP 4 I can't pass
>> reference like foreach ($arr as &$v).
>>
>> Any advice most welcome!
>>
>> jg
>>
>> function &buildObj($resu lt, $classname) {
>> if ($result) {
>> while($row = mysql_fetch_ass oc($result)) {
>> if ($row === null) return null;
>>
>> /* Create the object */
>> $obj =& new $classname;
>>
>> /* Explode the array and set the objects's instance
>> data */
>> foreach($row as $key => $value)
>> {
>> $obj->{$key} = $value;
>> }
>> $objs[] = $obj;
>> }
>> return $objs;
>> } // end if ($result)
>> }
>>[/color]
>
> My tests confirm that my problem is that foreach operates on a copy and i
> need to pass by reference or use while().
>[/color]

function forDate($date) { // $date = Y-m-d
$shelters = $this->retrieve("faci lity = '$_SESSION[facility]'");
$srObj = new ShelterRental;
if ($shelters) {
while ($s = current($shelte rs) ){
// retrieve today's rentals by shelter
$where = array("date = '$date'", "shelter = '$s->id'");
$rentals = $srObj->retrieve($wher e);
if ($rentals) {
echo $s->id;
foreach ($rentals as $r) {
$s->renter = $r->renter;
$s->contact = $r->contact;
$s->rentalid = $r->id;
} // foreach
} // if
$rentalInfo[] = $s;
next($shelters) ;
} // while
} // if
return $rentalInfo;
} // end forDate()