[] operator not supported for strings

[triaxx]

I am using php-7.1.0rc2. The following exception is thrown and bills cannot be edited:

Nov 21 13:58:14 dotclear: 2016/11/21 13:58:14 [error] 6327#0: *30417 FastCGI sent in stderr: "PHP message: PHP Fatal error:  Uncaught Error: [] operator not supported for strings in /dotclear/inc/core/class.dc.postmedia.php:61 Stack trace: 
#0 /dotclear/inc/core/class.dc.media.php(597): dcPostMedia->getPostMedia(Array) 
#1 /dotclear/plugins/attachments/_admin.php(48): dcMedia->getPostMedia('14', NULL, 'attachment') 
#2 /dotclear/inc/core/class.dc.core.php(399): attachmentAdmin::adminPostFormItems(Object(ArrayObject), Object(ArrayObject), Object(record)) 
/dotclear/admin/post.php(590): dcCore->callBehavior('adminPostFormIt...', Object(ArrayObject), Object(ArrayObject), Object(record)) 
#4 {main}   thrown in /dotclear/inc/core/class.dc.postmedia.php on line 61" while reading upstream, client: 46.218.45.195, server: blog.triaxx.org, request: "GET /admin/post.php?id=14 HTTP/1.1", upstream: "fastcgi://unix:/var/run/php-fpm.sock:", host: "blog.example.net", referrer: "https://blog.example.net/admin/posts.php"

The problem can be easily resolved with just one change:

diff -ru dotclear.old/inc/core/class.dc.postmedia.php dotclear/inc/core/class.dc.postmedia.php
--- dotclear.old/inc/core/class.dc.postmedia.php	2016-11-21 14:41:21.000000000 +0100
+++ dotclear/inc/core/class.dc.postmedia.php	2016-11-21 14:42:07.000000000 +0100
@@ -56,7 +56,7 @@
 			$strReq .= $params['from'].' ';
 		}
 
-		$where='';
+		$where=[];
 		if (isset($params['post_id'])) {
 			$where[]="PM.post_id ".$this->con->in($params['post_id']);
 		}

[franck <carnet.franck.paul@…>]

(In [ee26086333f1]) Typo, fixes #2223, thank’s triaxx for patch ;-)