Tutorial on writing ftp file upload function in PHP_PHP tutorial

This tutorial is about using PHP to write ftp file upload functions. PHP is very powerful. You can use its own functions to implement FTP functions and realize the file upload function

This tutorial is about Tutorial on writing ftp file upload function using PHP tutorial. PHP is very powerful. You can use its own functions to implement the function of FTP and realize the file upload function. The following is a complete example

function phpftp_top() {
echo "n";
echo " n";
echo "n";
echo "n";
echo "echo "n";
echo "nn";
}

function phpftp_bottom() {
echo "nn";
echo "n";
echo "n" ;
echo "n";
}

function phpftp_login() {
phpftp_top();
echo "n";
$ftp = @phpftp_connect( $phpftp_user, $phpftp_passwd );
if ( ! $ftp ) {
echo "FTP login failed!n";
echo "Start over?n";
phpftp_bottom();
} else {
if ( ! $phpftp_dir ) {
$phpftp_dir=ftp_pwd( $ftp );
}
if ( ! @ftp_chdir( $ftp, $phpftp_dir ) ) {
echo "Can't enter that directory!

n";
$phpftp_dir=ftp_pwd( $ftp );
}
echo "Current directory: " . $phpftp_dir . "
n";
if ( $phpftp_dir == "/" ) {
$phpftp_dir="";
}
echo "

n";
if ( $contents = ftp_nlist( $ftp, "." ) ) {
$d_i=0;
$f_i=0;
sort($contents);
for ( $i=0; $i < count( $contents ); $i++ ) {
$file_size = ftp_size( $ftp, $contents[$i] );
if ( $file_size == -1 ) {
$nlist_dirs[$d_i]=$contents[$i];
$d_i++;
} else {
$nlist_files[$f_i]=$contents[$i];
$nlist_filesize[$f_i]=$file_size;
$f_i++;
}
}
echo "nn";
} else {
echo "

Directory empty or not readable

n";
}
echo "

n"; echo "Directories n"; echo " n"; echo "n"; echo "n"; echo "n"; echo "n"; echo "n"; for ( $i=0; $i < count( $nlist_dirs ); $i++ ) { echo "" . $nlist_dirs[$i] . "n"; } echo " n"; echo "n"; echo " n"; echo "

nn"; echo "Files n"; echo " n"; echo "n"; echo "n"; echo "n"; echo "n"; echo "n"; for ( $i=0; $i < count( $nlist_files ); $i++ ) { echo "" . $nlist_files[$i] ." ($nlist_filesize[$i] bytes)". "n"; } echo " n"; echo "n"; echo " n"; echo "

nn";
echo "

n";
echo "

n";
$cdup=dirname( $phpftp_dir );
if ( $cdup == "" ) {
$cdup="/";
}
echo "n";
echo "n";
echo "n";
echo "n";
echo "n";
echo "

n";
echo "

n";
echo "

n";
echo "n";
echo "n";
echo "n";
echo "n";
echo "n";
echo "n";
echo "n";
echo "

n";
echo "

nn";
echo "

n";
echo "n";
echo "n";
echo "n";
echo "n";
echo "n";
echo "n";
ftp_quit( $ftp );
phpftp_bottom();
}
}

function phpftp_cd( $phpftp_user, $phpftp_passwd, $phpftp_dir, $select_directory ) {
echo "n";
$new_directory=$phpftp_dir . "/" . $select_directory;
phpftp_list( $phpftp_user, $phpftp_passwd, $new_directory );
}

function phpftp_mkdir( $phpftp_user, $phpftp_passwd, $phpftp_dir, $new_dir ) {
echo "n";
$ftp = @phpftp_connect( $phpftp_user, $phpftp_passwd );
if ( $phpftp_dir == "" ) {
$phpftp_dir="/";
}
if ( ! $ftp ) {
@ftp_quit( $ftp );
phpftp_top();
echo "FTP login failed!

n";
echo "Start over?n";
phpftp_bottom();
} else {
$dir_path = $phpftp_dir . "/" . $new_dir;
@ftp_mkdir( $ftp, $dir_path );
@ftp_quit( $ftp );
phpftp_list( $phpftp_user, $phpftp_passwd, $phpftp_dir );
}
};

function phpftp_get( $phpftp_user, $phpftp_passwd, $phpftp_dir, $select_file ) {
$ftp = @phpftp_connect( $phpftp_user, $phpftp_passwd );
if ( $phpftp_dir == "" ) {
$phpftp_dir="/";
}
if ( ( ! $ftp ) || ( ! @ftp_chdir( $ftp, $phpftp_dir ) ) ) {
@ftp_quit( $ftp );
phpftp_top();
echo "FTP login failed!

n";
echo "Start over?n";
phpftp_bottom();
} else {
srand((double)microtime()*1000000);
$randval = rand();
$tmpfile="/var/tmp/xfers/" . $select_file . "." . $randval;
if ( ! ftp_get( $ftp, $tmpfile, $select_file, FTP_BINARY ) ) {
ftp_quit( $ftp );
phpftp_top();
echo "FTP get failed!

nStart over?n";
phpftp_bottom();
} else {
ftp_quit( $ftp );
header( "Content-Type: application/octet-stream" );
header( "Content-Disposition: attachment; filename=" . $select_file );
readfile( $tmpfile );
}
@unlink( $tmpfile );
}
}

function phpftp_put( $phpftp_user, $phpftp_passwd, $phpftp_dir, $userfile, $userfile_name ) {
srand((double)microtime()*1000000);
$randval = rand();
$tmpfile="/var/tmp/xfers/" . $userfile_name . "." . $randval;
if ( ! @copy( $userfile, $tmpfile ) ) {
phpftp_top();
echo "Upload failed! Probably no space on server for temp file.

nStart over?n";
phpftp_bottom();
} else {
if ( ! $ftp = @phpftp_connect( $phpftp_user, $phpftp_passwd ) ) {
unlink( $tmpfile );
phpftp_top();
echo "FTP login failed!

nStart over?n";
phpftp_bottom();
} else {
ftp_put( $ftp, $userfile_name, $tmpfile, FTP_BINARY );
ftp_quit( $ftp );
unlink( $tmpfile );
phpftp_list( $phpftp_user, $phpftp_passwd, $phpftp_dir );
}
}
}

switch( $function ) {
case "dir";
phpftp_list( $phpftp_user, $phpftp_passwd, $phpftp_dir );
break;
case "cd";
phpftp_cd( $phpftp_user, $phpftp_passwd, $phpftp_dir, $select_directory );
break;
case "get";
phpftp_get( $phpftp_user, $phpftp_passwd, $phpftp_dir, $select_file );
break;
case "put";
phpftp_put( $phpftp_user, $phpftp_passwd, $phpftp_dir, $userfile, $userfile_name );
break;
case "mkdir";
phpftp_mkdir( $phpftp_user, $phpftp_passwd, $phpftp_dir, $new_dir );
break;
case "";
phpftp_login();
break;
}

?>