(PHP ActiveX) 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 ActiveX Downloads ActiveX for 32-bit and 64-bit Windows Note: The php_com_dotnet.dll may need to be enabled inside of php.ini.

<?php

// This example requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

// For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.Ftp2')
$ftp = new COM("Chilkat.Ftp2");

$ftp->Hostname = 'ftp.example.com';
$ftp->Username = 'username';
$ftp->Password = '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' . "\n";
}
else {
    print 'file exists and is ' . $fileSize . ' bytes in size' . "\n";
}

$success = $ftp->Disconnect();

?>