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  • PHP 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.

    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.

    PHP 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() Downloads a file from the FTP server
    ftp_get_option() Returns runtime options of the FTP connection
    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_mlsd() Returns the list of files in the specified directory
    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() 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 Predefined FTP Constants

    Constant Type Description
    FTP_ASCII Integer
    FTP_AUTOSEEK Integer
    FTP_AUTORESUME Integer
    FTP_BINARY Integer
    FTP_FAILED Integer Asynchronous transfer has failed
    FTP_FINISHED Integer Asynchronous transfer is completed
    FTP_IMAGE Integer Alias of FTP_BINARY
    FTP_MOREDATA Integer Asynchronous transfer is in progress
    FTP_TEXT Integer Alias of FTP_ASCII
    FTP_TIMEOUT_SEC Integer The timeout used for network operations
    FTP_USEPASVADDRESS Boolean
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