Topic on Talk:Beta Features/PHP7

https://en.wikipedia.org/w/index.php?title=Wikipedia:Village_pump_(technical)&oldid=882171666#Template:OSM_Location_map_syntax_error

"The is showing "Syntax error" as an output for all instances of its use (for example, and ."

When previewing the page, it seems that toggling php7 beta feature triggers this error.

This might be the same issue as T214984?

I fixed trailing comma's https://en.wikipedia.org/w/index.php?title=Template:Highway_system_OSM_map&diff=prev&oldid=882181669

and an incorrect value: https://en.wikipedia.org/w/index.php?title=Template:OSM_Location_map/Labelitem&diff=prev&oldid=882186194 (wikicode generated the literal 0 + 1, but json doesn't do calculations ;)

This seems to fix it. Interesting that the inline comments did not cause a validation error.