[TYPO3-commerce] extensions of the extension using $this->piVars

[Peter Waechtler]

hi franz,

$this in conjunction with php4 php5 was the problem - like you said.  
thanks so much for the help,

regards,
piet

> Hi,
>
>> i am busy extending commerce a little - am wanting to show the gn_id
>> which is stored in the fe_users table:
>>
>>     function additionalMarker($markerArray,&$subpartArray,&$this) {
>
> ouch, very bad. don't ever use '$this' as name for a variable - better
> use something like '$parent'.
>
>>         echo $this->piVars["order_id"];
>>         $res =
>> $GLOBALS['TYPO3_DB']->exec_SELECTquery('fe_users.tx_gn_gn_id',
>> 'fe_users, tx_commerce_orders', 'fe_users.uid =
>> tx_commerce_orders.cust_fe_user AND tx_commerce_orders.order_id = ' .
>> $this->piVars["order_id"]);
>>         $row = $GLOBALS['TYPO3_DB']->sql_fetch_assoc($res);
>>         $markerArray['###REP_ID###'] = $row['tx_gn_gn_id'];
>>         return $markerArray;
>>     }
>>
>> the marker is displays nicely on my local webserver. as soon as i put
>> the extension online - to the live server the line:  echo
>> $this->piVars["order_id"]; does not return anything and the of  
>> course i
>> get a sql error.
>
> I could imagine, that the error is related by redeclaring $this as
> mentioned above. Use something else, as $this is a preserved namespace
> of your class.
>
> And to see why there is a DB error, set the following line somewhere
> before your SQL statements:
>
> $GLOBALS['TYPO3_DB']->debugOutput = 1;
>
>> have you got any idea why $this->piVars["order_id"] has got a  
>> value on
>> the one system and is empty on the remote? all else is working fine.
>
> yes - as mentioned above $this might cause problems. I guess your  
> local
> webserver runs with php 4.x while your live server has php 5.x. The
> later normally throws errors when you try to redeclare $this.
>
> --
> Greetings,
> Franz
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