PHP 7.1 warning ‘non-numeric value encountered’

PHP 7.1 now throws a warning when coercing an invalid string (see http://php.net/manual/en/migration71.other-changes.php)

I’m seeing this warning in my logs when using your plugin:
Got error 'PHP message: PHP Warning: A non-numeric value encountered in /var/www/innovation/web/app/plugins/feed-them-social/includes/feed-them-functions.php on line 2691

My site info:

Feed Them Social Version: 2.1.6

-- WordPress Configuration:
	
WordPress Version:        4.7.2
Multisite:                No
Permalink Structure:      /%postname%
PHP Memory Limit:         256M
WP_DEBUG:                 Disabled

-- Webserver Configuration:
	
PHP Version:              7.1.1-1+deb.sury.org~xenial+1
Web Server Info:          Apache/2.4.25 (Ubuntu)

-- PHP Configuration:
	
Safe Mode:                No
Upload Max Size:          32M
Post Max Size:            32M
Upload Max Filesize:      32M
Time Limit:               30
Max Input Vars:           10000
Allow URL File Open:      On (1)
Display Erros:            On (1)

-- PHP Extensions:
	
FSOCKOPEN:                Your server supports fsockopen.
cURL:                     Your server supports cURL.

-- Active Plugins:

Advanced Custom Fields: 4.4.11
AuthLDAP: 1.4.21
Autoptimize: 2.1.0
Feed Them Social (Facebook, Instagram, Twitter, etc): 2.1.6
No Cache AJAX Widgets: 1.0
Page Builder by SiteOrigin: 2.4.25
Regenerate Thumbnails: 2.2.6
Relevanssi: 3.5.7.1
Simple Custom Post Order: 2.3.1
SiteOrigin Widgets Bundle: 1.8.1
Toolset Types: 2.2.9
WordPress Importer: 0.6.3
WP Super Cache: 1.4.9

-- Custom Token or Keys added to Options Pages
-- You must have a custom token to use the feeds

Facebook App Token:         No
FB App ID for Like Button:  No
Twitter Consumer Key:       Yes
Twitter Secret:             Yes
Twitter Token:              Yes
Twitter Token Secret:       Yes
Instagram:                  No
YouTube:                    No

-- Offset Post Limit:

Offset Facebook Post Limit: None
Hide Notice on Front End:   Yes

-- FaceBook & Twitter Date Format and Timezone

Date Format:                one-day-ago
Timezone:                   America/Chicago

-- Fix Twitter Time:

Fix:                        No

-- Disable Magnific CSS:

Fix:                        No

-- Fix Internal Server Error:

• This topic was modified 9 years, 2 months ago by wunch.