HTTP and FTP Functions

HTTP Functions:

The HTTP functions let you manipulate information sent to the browser by the Web server, before any other output has been sent.

Function	Description
header()	Sends a raw HTTP header to a client Syntax: header(string, replace, http_response_code)
headers_list()	Returns a list of response headers sent (or ready to send) Syntax: headers_list() To determine whether or not the headers have been sent yet, use the headers_sent() function.
headers_sent()	Checks if / where the HTTP headers have been sent Syntax: headers_sent(file,line)
setcookie()	Defines a cookie to be sent along with the rest of the HTTP headers Syntax: setcookie(name,value,expire,path,domain,secure,httponly); A cookie is often used to identify a user. A cookie is a small file that the server embeds on the user's computer. Each time the same computer requests a page with a browser, it will send the cookie too.
setrawcookie()	Defines a cookie (without URL encoding) to be sent along with the rest of the HTTP headers Syntax: setrawcookie(name,value,expire,path,domain,secure);

FTP Functions:

The FTP functions give client access to file servers through the File Transfer Protocol (FTP).

The FTP functions are used to open, login and close connections, as well as upload, download, rename, delete, and get information on files from file servers. Not all of the FTP functions will work with every server or return the same results.

Some FTP Functions are given below:

ftp_alloc — Allocates space for a file to be uploaded

ftp_cdup — Changes to the parent directory

ftp_chdir — Changes the current directory on a FTP server

ftp_chmod — Set permissions on a file via FTP

ftp_close — Closes an FTP connection

ftp_connect — Opens an FTP connection

ftp_delete — Deletes a file on the FTP server

ftp_exec — Requests execution of a command on the FTP server

ftp_fget — Downloads a file from the FTP server and saves to an open file

ftp_fput — Uploads from an open file to the FTP server

ftp_get_option — Retrieves various runtime behaviours of the current FTP stream

ftp_get — Downloads a file from the FTP server

ftp_login — Logs in to an FTP connection

ftp_mdtm — Returns the last modified time of the given file

ftp_mkdir — Creates a directory

ftp_nb_continue — Continues retrieving/sending a file (non-blocking)

ftp_nb_fput — Stores a file from an open file to the FTP server (non-blocking)

ftp_nb_get — Retrieves a file from the FTP server and writes it to a local file (non-blocking)

ftp_nb_put — Stores a file on the FTP server (non-blocking)

ftp_nlist — Returns a list of files in the given directory

ftp_put — Uploads a file to the FTP server

ftp_pwd — Returns the current directory name

ftp_quit — Alias of ftp_close

ftp_rename — Renames a file or a directory on the FTP server

ftp_rmdir — Removes a directory

ftp_set_option — Set miscellaneous runtime FTP options

ftp_site — Sends a SITE command to the server

ftp_size — Returns the size of the given file

ftp_ssl_connect — Opens an Secure SSL-FTP connection