Warnings
While my external website pages work perfectly, my localhost gives me these warnings:
Warning: sizeof(): Parameter must be an array or an object that implements Countable in /Library/WebServer/Documents/Leathernecks/webassist/mysqli/authentication.php on line 274
Warning: Cannot modify header information - headers already sent by (output started at /Library/WebServer/Documents/Leathernecks/webassist/mysqli/authentication.php:274) in /Library/WebServer/Documents/Leathernecks/webassist/mysqli/authentication.php on line 445
What could be causing this and why?