Get random string-PHP Tutorial-php.cn

Get random string

/*
Function: Get a random string
Parameters:
1, (int)$length = 32 #Random character length, the default is 32
2, (int)$mode = 0 # Random character type, 0 is uppercase and lowercase letters and numbers, 1 is numbers, 2 is lowercase letters, 3 is uppercase letters, 4 is uppercase and lowercase letters, 5 is uppercase letters and numbers, 6 is lowercase letters and numbers
Return: Get String
Use:
$code = new activeCodeObj;
$str = $code->getCode($length, $mode);
*/
class activeCodeObj
{
function getCode ($length = 32, $mode) = 0)
{
switch ($mode) {
case '1':
$str = '1234567890';
break;
case '2':
$str = 'abcdefghijklmnopqrstuvwxyz';
break;
case '3 ':
$str = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ';
break;
case '4':
$str = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz';
break;
case '5':
$str = 'ABCDEFGHIJKLMNOPQRSTUVWX YZ1234567890';
break;
case ' 6':
$str = 'abcdefghijklmnopqrstuvwxyz1234567890';
break;
default:
$str = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz1234567890';
break;
}
$result = '';
$l = strlen($str);
for($i = 0;$i < $length;$i ++){
$num = rand(0, $l);
$result .= $str[$num];
}
return $result ;
}
}
Get client information
/*
Function: Get client information
Parameters:
Return: Specified information
Usage:
$code = new clientGetObj;
1. Browser: $str = $ code->getBrowse();
2. IP address: $str = $code->getIP();
4. Operating system: $str = $code->getOS();
*/
class clientGetObj
{
function getBrowse()
{
global $_SERVER;
$Agent = $_SERVER['HTTP_USER_AGENT'];
$browser = '';
$browserver = '';
$Browser = array('Lynx' , 'MOSAIC', 'AOL', 'Opera', 'JAVA', 'MacWeb', 'WebExplorer', 'OmniWeb');
for($i = 0; $i <= 7; $i ++) {
if(strpos($Agent, $Browsers[$i])){
$browser = $Browsers[$i];
$browserver = '';
}
}
if(ereg('Mozilla', $ Agent) && !ereg('MSIE', $Agent)){
$temp = explode('(', $Agent);
$Part = $temp[0];
$temp = explode('/', $ Part);
$browserver = $temp[1];
$temp = explode(' ', $browserver);
$browserver = $temp[0];
$browserver = preg_replace('/([d.]+ )/', '1', $browserver);
$browserver = $browserver;
$browser = 'Netscape Navigator';
}
if(ereg('Mozilla', $Agent) && ereg('Opera', $ Agent)) {
$temp = explode('(', $Agent);
$Part = $temp[1];
$temp = explode(')', $Part);
$browserver = $temp[1 ];
$temp = explode(' ', $browserver);
$browserver = $temp[2];
$browserver = preg_replace('/([d.]+)/', '1', $browserver) ;
$browserver = $browserver;
$browser = 'Opera';
}
if(ereg('Mozilla', $Agent) && ereg('MSIE', $Agent)){
$temp = explode('( ', $Agent);
$Part = $temp[1];
$temp = explode(';', $Part);
$Part = $temp[1];
$temp = explode(' ', $ Part);
$browserver = $temp[2];
$browserver = preg_replace('/([d.]+)/','1',$browserver);
$browserver = $browserver;
$browser = 'Internet Explorer';
}
if($browser != ''){
$browseinfo = $browser.' '.$browserver;
} else {
$browseinfo = false;
}
return $browseinfo;
}
function getIP ()
{
global $_SERVER;
if (getenv('HTTP_CLIENT_IP')) {
$ip = getenv('HTTP_CLIENT_IP');
} else if (getenv('HTTP_X_FORWARDED_FOR')) {
$ ip = getenv('HTTP_X_FORWARDED_FOR');
} else if (getenv('REMOTE_ADDR')) {
$ip = getenv('REMOTE_ADDR');
} else {
$ip = $_SERVER['REMOTE_ADDR'];
}
return $ip;
}
function getOS ()
{
global $_SERVER;
$agent = $_SERVER['HTTP_USER_AGENT'];
$os = false;
if (eregi('win', $agent ) && strpos($agent, '95')){
$os = 'Windows 95';
}
else if (eregi('win 9x', $agent) && strpos($agent, '4.90')){
$os = 'Windows ME';
}
else if (eregi('win', $agent) && ereg('98', $agent)){
$os = 'Windows 98';
}
else if (eregi('win', $agent) && eregi('nt 5.1', $agent)){
$os = 'Windows XP';
}
else if (eregi('win', $agent) && eregi( 'nt 5', $agent)){
$os = 'Windows 2000';
}
else if (eregi('win', $agent) && eregi('nt', $agent)){
$os = 'Windows NT';
}
else if (eregi('win', $agent) && ereg('32', $agent)){
$os = 'Windows 32';
}
else if (eregi(' linux', $agent)){
$os = 'Linux';
}
else if (eregi('unix', $agent)){
$os = 'Unix';
}
else if (eregi(' sun', $agent) && eregi('os', $agent)){
$os = 'SunOS';
}
else if (eregi('ibm', $agent) && eregi('os', $agent )){
$os = 'IBM OS/2';
}
else if (eregi('Mac', $agent) && eregi('PC', $agent)){
$os = 'Macintosh';
}
else if (eregi('PowerPC', $agent)){
$os = 'PowerPC';
}
else if (eregi('AIX', $agent)){
$os = 'AIX';
}
else if (eregi('HPUX', $agent)){
$os = 'HPUX';
}
else if (eregi('NetBSD', $agent)){
$os = 'NetBSD';
}
else if (eregi('BSD', $agent)){
$os = 'BSD';
}
else if (ereg('OSF1', $agent)){
$os = 'OSF1';
}
else if (ereg('IRIX', $agent)){
$os = 'IRIX';
}
else if (eregi('FreeBSD', $agent)){
$os = 'FreeBSD';
}
else if (eregi('teleport', $agent)){
$os = 'teleport';
}
else if (eregi('flashget', $agent)){
$os = 'flashget';
}
else if (eregi('webzip', $agent)){
$os = 'webzip';
}
else if (eregi('offline', $agent)){
$os = 'offline';
}
else {
$os = 'Unknown';
}
return $os;
}
}
//修改自q3boy
class cnStrObj
{
''$function = $tstr = star , $len = ''){
if($start == 0 || $start == ''){
$start = 1;
}
if($str == '' || $len == ' '){
return false;
}
for($i = 0; $i < $start + $len; $i ++){
$tmpstr = (ord($str[$i]) >= 161 && ord($str[$i]) <= 247&& ord($str[$i+1]) >= 161 && ord($str[$i+1]) <= 254)?$str [$i].$str[++$i]:$tmpstr = $str[$i];
if ($i >= $start && $i < ($start + $len))
{
$tmp .=$tmpstr;
}
}
return $tmp;
}
function isGB ($str)
{
$strLen = strlen($str);
$length = 1;
for($i = 0; $i < $strLen; $i ++) {
$tmpstr = ord(substr($str, $i, 1));
$tmpstr2 = ord( substr($str, $i+1, 1));
if(($tmpstr <= 161 || $tmpstr >= 247) && ($tmpstr2 <= 161 || $tmpstr2 >= 247) ){
$legalflag = false;
} else {
$legalflag = true;
}
}
return $legalflag;
}
}
//
define('SMTP_STATUS_NOT_CONNECTED', 1, TRUE);
define('SMTP_STATUS_CONNECTED', 2, TRUE);
class smtp{
var $connection;
var $connection; var $timeout ;
var $errors;
var $status;
var $body;
var $from;
var $host;
var $port;
var $helo;
var $auth;
var $user;
var $pass ;
/***************************************
** Filename.......: class.smtp.inc
** Project........: SMTP Class
** Version........: 1.00b
** Last Modified..: 30 September 2001
***************************************/
function smtp($params = array()){
if(!defined('CRLF'))
define('CRLF', "rn", TRUE);
$this->timeout = 5;
$this->status = SMTP_STATUS_NOT_CONNECTED;
$this->host = 'localhost';
$this->port = 25;
$this->thelo> = 'localhost';
$this->auth = FALSE;
$this->user = '';
$this->pass = '';
$this->errors = array();
foreach($params as $key => $value){
$this->$key = $value;
}
}
/***************************************
** Constructor function. Arguments:
** $params - An assoc array of parameters:
**
** host - The hostname of the smtp server Default: localhost
** port - The port the smtp server runs on Default: 25
** helo - What to send as the HELO command Default: localhost
** (typically the hostname of the
** machine this script runs on)
** auth - Whether to use basic authentication Default: FALSE
** user - Username for authentication Default:
** pass - Password for authentication Default:
** timeout - The timeout in seconds for the call Default: 5
** to fsockopen()
***************************************/
function connect($params = array()){
if(!isset( $this->status)){
$obj = new smtp($params);
if($obj->connect()){
$obj->status = SMTP_STATUS_CONNECTED;
}
return $obj ;
}else{
$this->connection = fsockopen($this->host, $this->port, $errno, $errstr, $this->timeout);
socket_set_timeout($this- >connection, 0, 250000);
$greeting = $this->get_data();
if(is_resource($this->connection)){
return $this->auth ? $this->ehlo() : $this->helo();
}else{
$this->errors[] = 'Failed to connect to server: '.$errstr;
return FALSE;
}
}
}
/***************************************
** Function which handles sending the mail.
** Arguments:
** $params - Optional assoc array of parameters.
** Can contain:
** recipients - Indexed array of recipients
** from - The from address. (used in MAIL FROM,
** this will be the return path
** headers - Indexed array of headers, one header per array entry
** body - The body of the email
** It can also contain any of the parameters from the connect()
** function
***************************************/
function send($params = array()){
foreach($params as $key => $value){
$this->set($key, $value);
}
if($this->is_connected()){
// Do we auth or not? Note the distinction between the auth variable and auth() function
if($this->auth){
if(!$this->auth())
return FALSE;
}
$this->mail($this->from);
if(is_array($this->recipients))
foreach($this->recipients as $value)
$this->rcpt($value);
else
$this->rcpt($this->recipients);
if(!$this->data())
return FALSE;
// Transparency
$headers = str_replace(CRLF.'.', CRLF.'..', trim(implode(CRLF, $this->headers)));
$body = str_replace(CRLF.'.', CRLF.'..', $this->body);
$body = $body[0] == '.' ? '.'.$body : $body;
$this->send_data($headers);
$this->send_data('');
$this->send_data($body);
$this->send_data('.');
return (substr(trim($this->get_data()), 0, 3) === '250');
}else{
$this->errors[] = 'Not connected!';
return FALSE;
}
}
/***************************************
** Function to implement HELO cmd
***************************************/
function helo(){
if(is_resource($this->connection)
AND $this->send_data('HELO '.$this->helo)
AND substr(trim($error = $this->get_data()), 0, 3) === '250' ){
return TRUE;
}else{
$this->errors[] = 'HELO command failed, output: ' . trim(substr(trim($error),3));
return FALSE;
}
}
/***************************************
** Function to implement EHLO cmd
***************************************/
function ehlo(){
if(is_resource($this->connection)
AND $this->send_data('EHLO '.$this->helo)
AND substr(trim($error = $this->get_data()), 0, 3) === '250' ){
return TRUE;
}else{
$this->errors[] = 'EHLO command failed, output: ' . trim(substr(trim($error),3));
return FALSE;
}
}
/***************************************
** Function to implement AUTH cmd
***************************************/
function auth(){
if(is_resource($this->connection)
AND $this->send_data('AUTH LOGIN')
AND substr(trim($error = $this->get_data()), 0, 3) === '334'
AND $this->send_data(base64_encode($this->user)) // Send username
AND substr(trim($error = $this->get_data()),0,3) === '334'
AND $this->send_data(base64_encode($this->pass)) // Send password
AND substr(trim($error = $this->get_data()),0,3) === '235' ){
return TRUE;
}else{
$this->errors[] = 'AUTH command failed: ' . trim(substr(trim($error),3));
return FALSE;
}
}
/***************************************
** Function that handles the MAIL FROM: cmd
***************************************/
function mail($from){
if($this->is_connected()
AND $this->send_data('MAIL FROM:<'.$from.'>')
AND substr(trim($this->get_data()), 0, 2) === '250' ){
return TRUE;
}else
return FALSE;
}
/***************************************
** Function that handles the RCPT TO: cmd
***************************************/
function rcpt($to){
if($this->is_connected()
AND $this->send_data('RCPT TO:<'.$to.'>')
AND substr(trim($error = $this->get_data()), 0, 2) === '25' ){
return TRUE;
}else{
$this->errors[] = trim(substr(trim($error), 3));
return FALSE;
}
}
/***************************************
** Function that sends the DATA cmd
***************************************/
function data(){
if($this->is_connected()
AND $this->send_data('DATA')
AND substr(trim($error = $this->get_data()), 0, 3) === '354' ){
return TRUE;
}else{
$this->errors[] = trim(substr(trim($error), 3));
return FALSE;
}
}
/***************************************
** Function to determine if this object
** is connected to the server or not.
***************************************/
function is_connected(){
return (is_resource($this->connection) AND ($this->status === SMTP_STATUS_CONNECTED));
}
/***************************************
** Function to send a bit of data
***************************************/
function send_data($data){
if(is_resource($this->connection)){
return fwrite($this->connection, $data.CRLF, strlen($data)+2);
}else
return FALSE;
}
/***************************************
** Function to get data.
***************************************/
function &get_data(){
$return = '';
$line = '';
if(is_resource($this->connection)){
while(strpos($return, CRLF) === FALSE OR substr($line,3,1) !== ' '){
$line = fgets($this->connection, 512);
$return .= $line;
}
return $return;
}else
return FALSE;
}
/***************************************
** Sets a variable
***************************************/
function set($var, $value){
$this->$var = $value;
return TRUE;
}
} // End of class
?>

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