File Existence Check

Testing to see if a file exists on the FTP server. The GetSizeByName method is a convenient way to check if a file exists. It will return -1 if the file does not exist, otherwise it returns the size of the file in bytes.

 Chilkat Perl Module Downloads for Windows, Linux, and MAC OS X

use chilkat();

$ftp = new chilkat::CkFtp2();

#  Any string unlocks the component for the 1st 30-days.
$success = $ftp->UnlockComponent("Anything for 30-day trial");
if ($success != 1) {
    print $ftp->lastErrorText() . "\n";
    exit;
}

$ftp->put_Hostname("ftp.***.com");
$ftp->put_Username("***");
$ftp->put_Password("***");

#  Connect and login to the FTP server.
$success = $ftp->Connect();
if ($success != 1) {
    print $ftp->lastErrorText() . "\n";
    exit;
}

#  Set the current remote directory to where the file is located:
$success = $ftp->ChangeRemoteDir("/something");
if ($success != 1) {
    print $ftp->lastErrorText() . "\n";
    exit;
}

#  Test to see if the file exists by getting the file size by name.
#  If a -1 is returned, the file does not exist.
$fileSize = $ftp->GetSizeByName("test123.txt");
if ($fileSize < 0) {
    print "file does not exist" . "\r\n";
}
else {
    print "file exists and is " . $fileSize . " bytes in size" . "\r\n";
}

$ftp->Disconnect();