Home arrow PHP arrow Page 9 - Stream Me Up, Scotty! (part 1)

Appendix: Code Listing - PHP

PHP4 comes with a bunch of new functions designed to allow FTPconnections over the Web. This article explores the new FTP functions,together with an example of how they can be used to build a browser-basedFTP client.

TABLE OF CONTENTS:
  1. Stream Me Up, Scotty! (part 1)
  2. Out With The Old...
  3. ...In With The New
  4. Where Am I?
  5. GETting It Right
  6. Start Me Up!
  7. Lights! Camera! Action!
  8. Well-Formed Ideas
  9. Appendix: Code Listing
By: Vikram Vaswani, (c) Melonfire
Rating: starstarstarstarstar / 4
November 07, 2000

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<!-- code for index.html begins here --> <html> <head> <basefont face=arial> </head> <body> <table border=0 align=center> <form action="actions.php4" method=post> <input type=hidden name=action value=CWD> <tr> <td> Server </td> <td> <input type=text name=server> </td> </tr> <tr> <td> User </td> <td> <input type=text name=username> </td> </tr> <tr> <td> Password </td> <td> <input type=password name=password> </td> </tr> <tr> <td colspan=2 align=center> <input type="submit" value="Beam Me Up, Scotty!"> </td> </tr> </form> </table> </body> </html> <!-- code for index.html ends here -->

<!-- code for actions.php4 begins here --> <html> <head> <basefont face=Arial> </head> <body> <? /*
DISCLAIMER:

This is use-at-your-own-risk code.

It is meant only for illustrative purposes and is not meant for production environments. No warranties of any kind are provided to the user.

You have been warned!

All code copyright Melonfire, 2000. Visit us at http://www.melonfire.com

*/ // function to connect to FTP server function connect() { global $server, $username, $password; $conn = ftp_connect($server); ftp_login($conn, $username, $password); return $conn; } // main program begins // check for valid form entries else print error if (!$server || !$username || !$password) { echo "Form data incomplete!"; } else { // connect $result = connect(); // action: change directory if ($action == "CWD") { // at initial stage $rdir does not exist // so assume default directory if (!$rdir) { $path = "."; } // get current location $cdir and add it to requested directory $rdir else { $path = $cdir . "/" . $rdir; } // change to requested directory ftp_chdir($result, $path); } // action: delete file(s) else if ($action == "Delete") { ftp_chdir($result, $cdir); // loop through selected files and delete for ($x=0; $x<sizeof($dfile); $x++) { ftp_delete($result, $cdir . "/" . $dfile[$x]); } } // action: download files else if ($action == "Download") { ftp_chdir($result, $cdir); // download selected files // IMPORTANT: you should specify a different download location here!! for ($x=0; $x<sizeof($dfile); $x++) { ftp_get($result, $dfile[$x], $dfile[$x], FTP_BINARY); } } // action: upload file else if ($action == "Upload") { ftp_chdir($result, $cdir); // put file /* a better idea would be to use $res_code = ftp_put($result, $HTTP_POST_FILES["upfile"]["name"], $HTTP_POST_FILES["upfile"]["tmp_name"], FTP_BINARY); as it offers greater security */ $res_code = ftp_put($result, $upfile_name, $upfile, FTP_BINARY); // check status and display if ($res_code == 1) { $status = "Upload successful!"; } else { $status = "Upload error!"; } } // create file list $filelist = ftp_nlist($result, "."); // and display interface include("include.php4"); // close connection ftp_quit($result); } ?> </body> </html> <!-- code for actions.php4 ends here -->

<!-- code for include.php4 begins here --> <? // get current location $here = ftp_pwd($result); /* since ftp_size() is quite slow, especially when working on an array containing all the files in a directory, this section performs an ftp_size() on all the files in the current directory and creates three arrays. */ // array for files $files = Array(); // array for directories $dirs = Array(); // array for file sizes $file_sizes = Array(); // counters $file_list_counter = 0; $dir_list_counter = 0; // check each element of $filelist for ($x=0; $x<sizeof($filelist); $x++) { if (ftp_size($result, $filelist[$x]) != -1) { // create arrays $files[$file_list_counter] = $filelist[$x]; $file_sizes[$file_list_counter] = ftp_size($result, $filelist[$x]); $file_list_counter++; } else { $dir_list[$dir_list_counter] = $filelist[$x]; $dir_list_counter++; } } ?> <!-- header - where am I? --> <center> You are currently working in <b><? echo $here; ?></b> <br> <!-- status message for upload function --> <? echo $status; ?> </center> <hr> <p> <!-- directory listing in drop-down list --> Available directories: <form action=actions.php4 method=post> <!-- these values are passed hidden every time --> <!-- a more optimal solution might be to place these in session variables --> <input type=hidden name=username value=<? echo $username; ?>> <input type=hidden name=password value=<? echo $password; ?>> <input type=hidden name=server value=<? echo $server; ?>> <input type=hidden name=cdir value=<? echo $here; ?>> <!-- action to take when THIS form is submitted --> <input type=hidden name=action value=CWD> <!-- dir listing begins; first item is for parent dir --> <select name=rdir> <option value=".."><parent directory></option> <? for ($x=0; $x<sizeof($dir_list); $x++) { echo "<option value=" . $dir_list[$x] . ">" . $dir_list[$x] . "</option>"; } ?> </select> <input type=submit value=Go> </form> <hr> <!-- file listing begins --> Available files: <form action=actions.php4 method=post> <!-- these values are passed hidden every time --> <input type=hidden name=server value=<? echo $server; ?>> <input type=hidden name=username value=<? echo $username; ?>> <input type=hidden name=password value=<? echo $password; ?>> <input type=hidden name=cdir value=<? echo $here; ?>> <table border=0 width=100%> <? // display file listing with checkboxes and sizes for ($y=0; $y<sizeof($files); $y++) { echo "<tr><td><input type=checkbox name=dfile[] value=" . $files[$y] . ">". $files[$y] . " <i>(" . $file_sizes[$y] . " bytes)</i><td>"; } ?> </table> <!-- actions for this form --> <center> <input type=submit name=action value=Delete>   <input type=submit name=action value=Download> </center> </form> <p> <hr> <!-- file upload form --> File upload: <form enctype="multipart/form-data" action=actions.php4 method=post> <!-- these values are passed hidden every time --> <input type=hidden name=username value=<? echo $username; ?>> <input type=hidden name=password value=<? echo $password; ?>> <input type=hidden name=server value=<? echo $server; ?>> <input type=hidden name=cdir value=<? echo $here; ?>> <table> <tr> <td> <!-- file selection box --> <input type=file name=upfile> </td> </tr> <tr> <td> <!-- action for this form --> <input type=submit name=action value=Upload> </td> </tr> </table> </form> <!-- code for include.php4 ends here -->


This article copyright Melonfire 2000. All rights reserved.

 
 
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