(PHP 4, PHP 5, PHP 7)
ftp_size — Returns the size of the given file
ftp_size ( resource $ftp_stream , string $remote_file ) : int
ftp_size() returns the size of the given file in bytes.
Note:
Not all servers support this feature.
ftp_stream
The link identifier of the FTP connection.
remote_file
The remote file.
Returns the file size on success, or -1 on error.
Example #1 ftp_size() example
<?php
$file = 'somefile.txt';
// set up basic connection
$conn_id = ftp_connect($ftp_server);
// login with username and password
$login_result = ftp_login($conn_id, $ftp_user_name, $ftp_user_pass);
// get the size of $file
$res = ftp_size($conn_id, $file);
if ($res != -1) {
echo "size of $file is $res bytes";
} else {
echo "couldn't get the size";
}
// close the connection
ftp_close($conn_id);
?>
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https://www.php.net/manual/en/function.ftp-size.php