input_name_to_filter -- Returns the filter ID belonging to a named filter
int input_name_to_filter ( string filtername )
This function is
EXPERIMENTAL. The behaviour of this function, the
name of this function, and anything else documented about this
function may change without notice in a future release of PHP.
Use this function at your own risk.
Name of a filter to get.
ID of a filter on success or NULL if filter doesn't exist.