UK shipping by postcode error logs

Hi,
I have installed the UK shipping by postcode module (on ZenCart 2.1.0 using PHP 8.3).

When viewing the shopping cart, a couple of PHP logs are generated due to the delivery postcode not being available/entered yet. The shipping estimator successfully displays at the bottom of the page, but the following logs are generated:

--> PHP Warning: Undefined array key "postcode" in ……../includes/modules/shipping/ukpost.php on line 178.


--> PHP Deprecated: preg_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in ……../includes/modules/shipping/ukpost.php on line 179.

Please see below lines 178 and 179 of ukpost.php

        $destination_postcode = $order->delivery['postcode'];
  	  $pcode = preg_replace('/\s\s*/', '', $destination_postcode);

The errors are only generated if a postcode has not been entered. Any help with this issue would be much appreciated.
Rick

richard7315:

Hi,
I have installed the UK shipping by postcode module (on ZenCart 2.1.0 using PHP 8.3).

When viewing the shopping cart, a couple of PHP logs are generated due to the delivery postcode not being available/entered yet. The shipping estimator successfully displays at the bottom of the page, but the following logs are generated:

--> PHP Warning: Undefined array key "postcode" in ……../includes/modules/shipping/ukpost.php on line 178.

--> PHP Deprecated: preg_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in ……../includes/modules/shipping/ukpost.php on line 179.

> 
> 
> Please see below lines 178 and 179 of ukpost.php
> 
> ```
        $destination_postcode = $order->delivery['postcode'];
        $pcode = preg_replace('/\s\s*/', '', $destination_postcode);

The errors are only generated if a postcode has not been entered. Any help with this issue would be much appreciated.
Rick
Make the highlighted change to line 178:

        $destination_postcode = $order->delivery['postcode'] [B]?? ''[/B];
        $pcode = preg_replace('/\s\s*/', '', $destination_postcode);

Hi Lat9
Thank you for your help. The addition of the ?? '' null coalescing operator worked perfectly.
Many thanks
Rick