ftp_connect() function in PHP

The ftp_connect() function opens an FTP connection to a remote server. This function is essential for establishing FTP communication before performing file operations like upload, download, or directory management.

Syntax

ftp_connect(host, port, timeout);

Parameters

• host − The FTP server to connect to. Can be a domain name or IP address.

• port − The port of the FTP server. Default is 21 for standard FTP connections.

• timeout − The timeout in seconds for network operations. Default is 90 seconds.

Return Value

The ftp_connect() function returns an FTP stream resource on success or FALSE on error.

Example

The following example demonstrates how to open an FTP connection, perform basic operations, and close the connection ?

<?php
    $ftp_server = "192.168.0.4";
    $ftp_user = "amit";
    $ftp_pass = "tywg61gh";
    
    // Establish FTP connection
    $con = ftp_connect($ftp_server);
    
    if ($con) {
        // Login to FTP server
        $res = ftp_login($con, $ftp_user, $ftp_pass);
        
        if ($res) {
            // Change to demo directory
            ftp_chdir($con, 'demo');
            echo "Current directory: " . ftp_pwd($con) . "<br>";
            
            // Try to change to parent directory
            if (ftp_cdup($con)) {
                echo "Directory changed!<br>";
            } else {
                echo "Directory change not successful!<br>";
            }
            
            echo "New directory: " . ftp_pwd($con) . "<br>";
        } else {
            echo "FTP login failed!<br>";
        }
        
        // Close FTP connection
        ftp_close($con);
    } else {
        echo "FTP connection failed!<br>";
    }
?>

Error Handling

Always check if the connection was successful before proceeding with FTP operations ?

<?php
    $ftp_server = "ftp.example.com";
    $connection = ftp_connect($ftp_server, 21, 30);
    
    if (!$connection) {
        die("Could not connect to FTP server: $ftp_server");
    }
    
    echo "Successfully connected to FTP server!";
    ftp_close($connection);
?>

Conclusion

The ftp_connect() function is the first step in any FTP operation. Always verify the connection before attempting login or file operations, and remember to close the connection with ftp_close() when finished.