Warning: count(): Parameter must be an array or an object that implements Countable in _minify_reserve_place() (line 237 of /sites/all/modules/contrib/minify/minify.module).

You can try this patch.

With the above patch I got the following warning:
"count(): Parameter must be an array or an object that implements Countable in _minify_reserve_place()"

For readability reasons I have added a new variable "placeholder_count", which check first if the global placeholders is an array and then does a count.

@bojan_dev
Thanks mate - your patch is working for me!

Patch #5 also works for me, is looking good!

Patch #5 works for me. Thanks.

Patch in #5 does not apply cleanly. It references a "new file" called php7count_2967902.patch that does not exist.

Have cleaned up #5 so it works correctly.

Thanks! Works for me.