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.

Download 32-bit Chilkat FTP2 ActiveX (.msi)

Download All 32-bit Chilkat ActiveX Components (.zip)

Download All 64-bit Chilkat ActiveX Components (.zip)

<?php

$ftp = new COM("Chilkat.Ftp2");

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

$ftp->Hostname = 'ftp.***.com';
$ftp->Username = '***';
$ftp->Password = '***';

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

//  Set the current remote directory to where the file is located:
$success = $ftp->ChangeRemoteDir('/something');
if ($success != true) {
    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' . "\n";
}
else {
    print 'file exists and is ' . $fileSize . ' bytes in size' . "\n";
}

$ftp->Disconnect();
?>