Hello,
I recently upgraded to playsms v1.4.7 and I cannot send sms to multiple recipients. Let’s say I want to send ‘test’ to 012345679 and 1234567890 throught webservices. I used to use this URL (%2C stands for a comma) :
http://myserver.sms/index.php?app=ws&u=pisci&h=mytoken&op=pv&to=0123456789%2C1234567890&msg=test
Since the update, this doesn’t work anymore. the two numbers are now concatenated and playsms tries to send one sms only to the number 01234567891234567890 which obviously fails.
I managed to restore the service by commenting the line 94 in wen/lib/fn_webservices.php 
$to = is_array($to) ? $to : [$to];
However I don’t know what else I might have broken doing this…