If the first and second arguments are the same the third argument is passed back, otherwise the fourth argument (or if not given the second argument) is passed back.This function is valid in v2.7.0. This function has been downloaded 0 times.
subjectare the same.
trueValuewill be returned if
subject. Otherwise, if
opt_falseValueis given it will be returned, but if not given
subjectwill be returned.