define Defines a named constant &reftitle.description; booldefine stringname mixedvalue boolcase_insensitivefalse Defines a named constant at runtime. &reftitle.parameters; name The name of the constant. value The value of the constant; only scalar and null values are allowed. Scalar values are integer, float, string or boolean values. It is possible to define resource constants, however it is not recommended and may cause unpredictable behavior. case_insensitive If set to &true;, the constant will be defined case-insensitive. The default behavior is case-sensitive; i.e. CONSTANT and Constant represent different values. Case-insensitive constants are stored as lower-case. &reftitle.returnvalues; &return.success; &reftitle.examples; ]]> &reftitle.seealso; defined constant The section on Constants