filter
filter()
Performs the main processing for the filter. Used with
closure filters; that is, a closure filter handles the lexical
variables that are maintained by the closure. The finished source,
as processed by filter
, will be
returned in $_
.
filter
returns a status,
as follows:
< 0
An error has been encountered.
EOF
End-of-file has been reached unexpectedly.
> 0
Everything is OK.
18.191.62.122