Overview

Classes summary
Horde_Constraint_AlwaysFalse	Always returns false
Horde_Constraint_AlwaysTrue	Always returns true
Horde_Constraint_And	Represents a collection of constraints, if one is false, this collection will evaluate to false
Horde_Constraint_Coupler	Interface for grouped (compound, coupled) constraints.
Horde_Constraint_IsEqual	Checks for equality
Horde_Constraint_IsInstanceOf	Checks for an instance of a class
Horde_Constraint_Not	Negates another constraint
Horde_Constraint_Null	Checks if the value is null
Horde_Constraint_Or	Represents a collection of constraints, if any are true, the collection will evaluate to true.
Horde_Constraint_PregMatch	Matches against a PCRE regex

Interfaces summary
Horde_Constraint	Interface for constraints.