NAME

filter_mapping()  -  remove some elements of a mapping based on a func‐
tion

SYNOPSIS

mapping filter_mapping( mapping map, string fun, object ob,
                          mixed extra, ... );
mapping map_mapping( mapping map, function f, mixed extra, ... );

DESCRIPTION

Returns an mapping with the same keys as  map  whose  items  have  been
mapped  throught  'ob->fun()'  or 'f'.  The function is called for each
element in 'arr' and the return value is  put  back  in  that  spot  in
'arr'.   'extra' and following are passed as parameters to the function
after the item.

SEE ALSO

filter_array(3), sort_array(3), map(3)