IO::File - phpMan

NAME
    IO::File - supply object methods for filehandles

SYNOPSIS
        use IO::File;

        $fh = IO::File->new();
        if ($fh->open("< file")) {
            print <$fh>;
            $fh->close;
        }

        $fh = IO::File->new("> file");
        if (defined $fh) {
            print $fh "bar\n";
            $fh->close;
        }

        $fh = IO::File->new("file", "r");
        if (defined $fh) {
            print <$fh>;
            undef $fh;       # automatically closes the file
        }

        $fh = IO::File->new("file", O_WRONLY|O_APPEND);
        if (defined $fh) {
            print $fh "corge\n";

            $pos = $fh->getpos;
            $fh->setpos($pos);

            undef $fh;       # automatically closes the file
        }

        autoflush STDOUT 1;

DESCRIPTION
    "IO::File" inherits from "IO::Handle" and "IO::Seekable". It extends
    these classes with methods that are specific to file handles.

CONSTRUCTOR
    new ( FILENAME [,MODE [,PERMS]] )
        Creates an "IO::File". If it receives any parameters, they are
        passed to the method "open"; if the open fails, the object is
        destroyed. Otherwise, it is returned to the caller.

    new_tmpfile
        Creates an "IO::File" opened for read/write on a newly created
        temporary file. On systems where this is possible, the temporary
        file is anonymous (i.e. it is unlinked after creation, but held
        open). If the temporary file cannot be created or opened, the
        "IO::File" object is destroyed. Otherwise, it is returned to the
        caller.

METHODS
    open( FILENAME [,MODE [,PERMS]] )
    open( FILENAME, IOLAYERS )
        "open" accepts one, two or three parameters. With one parameter, it
        is just a front end for the built-in "open" function. With two or
        three parameters, the first parameter is a filename that may include
        whitespace or other special characters, and the second parameter is
        the open mode, optionally followed by a file permission value.

        If "IO::File::open" receives a Perl mode string (">", "+<", etc.) or
        an ANSI C fopen() mode string ("w", "r+", etc.), it uses the basic
        Perl "open" operator (but protects any special characters).

        If "IO::File::open" is given a numeric mode, it passes that mode and
        the optional permissions value to the Perl "sysopen" operator. The
        permissions default to 0666.

        If "IO::File::open" is given a mode that includes the ":" character,
        it passes all the three arguments to the three-argument "open"
        operator.

        For convenience, "IO::File" exports the O_XXX constants from the
        Fcntl module, if this module is available.

    binmode( [LAYER] )
        "binmode" sets "binmode" on the underlying "IO" object, as
        documented in "perldoc -f binmode".

        "binmode" accepts one optional parameter, which is the layer to be
        passed on to the "binmode" call.

NOTE
    Some operating systems may perform "IO::File::new()" or
    "IO::File::open()" on a directory without errors. This behavior is not
    portable and not suggested for use. Using "opendir()" and "readdir()" or
    "IO::Dir" are suggested instead.

SEE ALSO
    perlfunc, "I/O Operators" in perlop, IO::Handle, IO::Seekable, IO::Dir

HISTORY
    Derived from FileHandle.pm by Graham Barr <gbarr AT pobox.com>.

Generated by phpMan Author: Che Dong On Apache Under GNU General Public License - MarkDown Format
2026-05-21 21:11 @216.73.216.105 CrawledBy Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)