I was unable to find this on php.net. Is the double equal sign (==) case sensitive when used to compare strings in PHP?
==
== is case-sensitive, yes.
To compare strings insensitively, you can use either strtolower($x) == strtolower($y) or strcasecmp($x, $y) == 0
strtolower($x) == strtolower($y)
strcasecmp($x, $y) == 0