PHP 5 FTP Functions

PHP FTP Introduction

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. The FTP functions became available with PHP 3.

If you only wish to read from or write to a file on an FTP server, consider using the ftp:// wrapper with the Filesystem functions which provide a simpler and more intuitive interface.

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Installation

For these functions to work, you have to compile PHP with --enable-ftp.

The Windows version of PHP has built-in support for this extension.

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PHP 5 FTP Functions

Function	Description
ftp_alloc()	Allocates space for a file to be uploaded to the FTP server
ftp_cdup()	Changes to the parent directory on the FTP server
ftp_chdir()	Changes the current directory on the FTP server
ftp_chmod()	Sets 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()	Executes a command on the FTP server
ftp_fget()	Downloads a file from the FTP server and saves it into an open local file
ftp_fput()	Uploads from an open file and saves it to a file on the FTP server
ftp_get_option()	Returns runtime options of the FTP connection
ftp_get()	Downloads a file from the FTP server
ftp_login()	Logs in to the FTP connection
ftp_mdtm()	Returns the last modified time of a specified file
ftp_mkdir()	Creates a new directory on the FTP server
ftp_nb_continue()	Continues retrieving/sending a file (non-blocking)
ftp_nb_fget()	Downloads a file from the FTP server and saves it into an open file (non-blocking)
ftp_nb_fput()	Uploads from an open file and saves it to a file on the FTP server (non-blocking)
ftp_nb_get()	Downloads a file from the FTP server (non-blocking)
ftp_nb_put()	Uploads a file to the FTP server (non-blocking)
ftp_nlist()	Returns a list of files in the specified directory on the FTP server
ftp_pasv()	Turns passive mode on or off
ftp_put()	Uploads a file to the FTP server
ftp_pwd()	Returns the current directory name
ftp_quit()	An alias of ftp_close()
ftp_raw()	Sends a raw command to the FTP server
ftp_rawlist()	Returns a list of files with file information from a specified directory
ftp_rename()	Renames a file or directory on the FTP server
ftp_rmdir()	Deletes an empty directory on the FTP server
ftp_set_option()	Sets runtime options for the FTP connection
ftp_site()	Sends an FTP SITE command to the FTP server
ftp_size()	Returns the size of the specified file
ftp_ssl_connect()	Opens a secure SSL-FTP connection
ftp_systype()	Returns the system type identifier of the FTP server

PHP 5 Predefined FTP Constants

Constant	Type	PHP
FTP_ASCII	Integer	PHP 3
FTP_TEXT	Integer	PHP 3
FTP_BINARY	Integer	PHP 3
FTP_IMAGE	Integer	PHP 3
FTP_TIMEOUT_SEC	Integer	PHP 3
FTP_AUTOSEEK	Integer	PHP 4.3
FTP_AUTORESUME	Integer	PHP 4.3
FTP_FAILED	Integer	PHP 4.3
FTP_FINISHED	Integer	PHP 4.3
FTP_MOREDATA	Integer	PHP 4.3

Credit: www.w3schools.com