NAME
StringContains — Check whether the target string contains the search value.
SYNOPSIS
StringContains TargetString SearchValue
DESCRIPTION
Return Value
1 Target string does contain the value.
0 Target string does not contain the value.
Arguments
TargetStringString to search in.
SearchValueValue to search for.

For information regarding exceptions / errors, see here.
EXAMPLES 
% StringContains "one two three" two
1
% StringContains "one two three" four
0
SEE ALSO
EndsWith, StartsWith, string
KEYWORDS
check, string, validation, verification