Photo sync should check if the size of a photo exists

[Christopher Adams]

Photo sync will output an error if the JSON response from Flickr does not contain the expected sizes. E.g.:

Notice: Undefined index: url_m in /home/aikilab/public_html/pple/assets/extensions/ppl_flickr.php on line 269

[Christopher Adams (christopheradams)]

Which sizes need to be checked for?

PPL attempts to import square, thumbnail, small and medium.

Is every photo on Flickr guaranteed to have at least a square and thumbnail size?

[Christopher Adams (christopheradams)]

Also saw the error:

Notice: Undefined index: url_s in /home/aikilab/public_html/pple/assets/extensions/ppl_flickr.php on line 267

[Christopher Adams (christopheradams)]

Adding checking for small and mediums sizes:

if (isset($photo['url_s']) and $photo['url_s']){
  $small_url = $photo['url_s'];
}

if (isset($photo['url_m']) and $photo['url_m']){
  $medium_url = $photo['url_m'];
}