Filter and Sorting

The following functions are used to build and work with filters and sorting sequences

Method	Description	Available from version
InitFilterEx	Initializes filter.
DelFilterEx	Deletes filter.
GetFilterHiddens	Allows to create a number of hidden HTML form tags. The tags returned are built using variables whose names are passed in the array, or their prefix is specified in the mixed type parameter..
GetFilterParams	Returns the string containing the URL parameters from an array of variables or variables whose names start with the prefix specified.
CheckFilterDates	Checks if the two dates inputted in a filter are correct.
InitSorting	Initializes the sorting.
SortingEx	Generates sorting direction visual cues.