strcasecmp expression function

Compares two strings, ignoring case.

See also: strcmp, strmatch, strcasematch

• Returns a negative number if s1 is lexicographically less than s2

• Returns a positive number if s1 is lexicographically greater than s2

• Returns 0 if s1 is equal to s2

This function is case-insensitive. For case-sensitive comparison, use strcmp.