PHP message: PHP Warning: rawurlencode() expects parameter 1 to be string, array given

[x-iy]

PHP warning created when accessing webservice eg.

/webservice/rest/server.php?wstoken=xxxxxxxxxxxxxx&wsfunction=core_course_get_courses&options[ids][0]=8804&moodlewsrestformat=json

PHP message: PHP Warning: rawurlencode() expects parameter 1 to be string, array given in /var/www/site/lib/weblib.php on line 522

Due to this line:
https://github.com/catalyst/moodle-tool_excimer/blob/MOODLE_35_STABLE/classes/script_metadata.php#L143

[brendanheywood]

This has been worked around, the core issue still remains here:

https://tracker.moodle.org/browse/MDL-84668