A door-locking device, particularly for a domestic appliance, comprising: a support housing with an opening for the introduction of a hook member connected to the door, a restraining member or slider mounted so as to be movable relative to the housing between a rest position in which it allows the hook member to be introduced into the opening and a working position in which it is adapted to restrain the hook member introduced into the opening, a locking member which is movable in the support housing between a release position and an engagement position in which it permits and prevents the movement of the restraining member from the working position to the rest position, respectively, and emergency release means (6a; 12) for forcing the locking member to move from the position of engagement of the restraining member or slider to the release position thereof, the door-locking device being characterized in that the emergency release means comprise: a flexible, integral appendage of the restraining member or slider which is adapted to adopt, when the slider is in the working position and the locking member is in the engagement position, an inactive condition in which it does not interfere with the locking member and an active condition in which it interferes with the locking member so as to bring about its return to the release position, and an operating lever which is formed integrally with at least one portion of the support housing and which, when operated, brings about the movement of the appendage of the restraining member or slider from the inactive condition to the active condition. a support housing with an opening for the introduction of a hook member connected to the door, a restraining member or slider mounted so as to be movable relative to the housing between a rest position in which it allows the hook member to be introduced into the opening and a working position in which it is adapted to restrain the hook member introduced into the opening, a locking member which is movable in the support housing between a release position and an engagement position in which it permits and prevents the movement of the restraining member from the working position to the rest position, respectively, and emergency release means (6a; 12) for forcing the locking member to move from the position of engagement of the restraining member or slider to the release position thereof, the door-locking device being characterized in that the emergency release means comprise: a flexible, integral appendage of the restraining member or slider which is adapted to adopt, when the slider is in the working position and the locking member is in the engagement position, an inactive condition in which it does not interfere with the locking member and an active condition in which it interferes with the locking member so as to bring about its return to the release position, and an operating lever which is formed integrally with at least one portion of the support housing and which, when operated, brings about the movement of the appendage of the restraining member or slider from the inactive condition to the active condition. a flexible, integral appendage of the restraining member or slider which is adapted to adopt, when the slider is in the working position and the locking member is in the engagement position, an inactive condition in which it does not interfere with the locking member and an active condition in which it interferes with the locking member so as to bring about its return to the release position, and an operating lever which is formed integrally with at least one portion of the support housing and which, when operated, brings about the movement of the appendage of the restraining member or slider from the inactive condition to the active condition.