How can the warning about expecting a resource parameter be resolved in the ftp_pasv function?

The warning about expecting a resource parameter in the ftp_pasv function can be resolved by ensuring that the FTP connection resource is passed as an argument to the function. This can be done by establishing an FTP connection using the ftp_connect function and then passing the resulting resource to the ftp_pasv function. 

// Establish FTP connection
$ftp_server = 'ftp.example.com';
$ftp_username = 'username';
$ftp_password = 'password';
$conn_id = ftp_connect($ftp_server);
ftp_login($conn_id, $ftp_username, $ftp_password);

// Enable passive mode
ftp_pasv($conn_id, true);

Keywords

PHP ftp_pasv resource parameter warning resolution

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