 
```
npm install uniqid
```js
var uniqid = require('uniqid');
console.log(uniqid()); // -> 4n5pxq24kpiob12og9
console.log(uniqid(), uniqid()); // -> 4n5pxq24kriob12ogd, 4n5pxq24ksiob12ogl
```
## API:
#### **uniqid(** prefix *optional string* **)**
```js
uniqid() -> "4n5pxq24kpiob12og9"
uniqid('hello-') -> "hello-4n5pxq24kpiob12og9"
function uniqid(prefix, more_entropy) {
// discuss at: http://phpjs.org/functions/uniqid/
// original by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
// test: skip
// example 1: uniqid();
// returns 1: 'a30285b160c14'
// example 2: uniqid('foo');
// returns 2: 'fooa30285b1cd361'
// example 3: uniqid('bar', true);
// END REDUNDANT
if (!this.php_js.uniqidSeed) {
// init seed with big random int
}
this.php_js.uniqidSeed++;
// add seed hex string
retId += formatSeed(this.php_js.uniqidSeed, 5);
*/
public class UniqId {
private final Log log = LogFactory.getLog(UniqId.class);
private static char[] digits = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f' };
private static UniqId me = new UniqId();
private UniqId() {
catch (final IOException e) {
log.error("[UniqID] Get HostAddr Error", e);
if (log.isDebugEnabled()) {
log.debug("[UniqID]hostAddr is:" + hostAddr);
/**
* 获取MD5之后的uniqId string
*
* @return uniqId md5 string
package Data::Uniqid;
our %EXPORT_TAGS = ( 'all' => [ qw(
suniqid
uniqid
luniqid
) ] );
sub suniqid { ########################################### get unique id #####
sub uniqid { ########################################### get unique id #####
sub luniqid { ############################################ get unique id #####
Data::Uniqid - Perl extension for simple genrating of unique id's
/* $Id: uniqid.c 306939 2011-01-01 02:19:59Z felipe $ */
#include "php_lcg.h"
#include "uniqid.h"
/* {{{ proto string uniqid([string prefix [, bool more_entropy]])
#ifdef HAVE_GETTIMEOFDAY
PHP_FUNCTION(uniqid)
#endif
char *uniqid;
if (more_entropy) {
spprintf(&uniqid, 0, "%s%08x%05x%.8F", prefix, sec, usec, php_combined_lcg(TSRMLS_C) * 10);
} else {
spprintf(&uniqid, 0, "%s%08x%05x", prefix, sec, usec);
RETURN_STRING(uniqid, 0);
/* $Id: uniqid.c 293036 2010-01-03 09:23:27Z sebastian $ */
#include "php_lcg.h"
#include "uniqid.h"
/* {{{ proto string uniqid([string prefix [, bool more_entropy]])
#ifdef HAVE_GETTIMEOFDAY
PHP_FUNCTION(uniqid)
#endif
char *uniqid;
if (more_entropy) {
spprintf(&uniqid, 0, "%s%08x%05x%.8F", prefix, sec, usec, php_combined_lcg(TSRMLS_C) * 10);
} else {
spprintf(&uniqid, 0, "%s%08x%05x", prefix, sec, usec);
RETURN_STRING(uniqid, 0);
/* $Id: uniqid.c,v 1.41.2.2.2.2.2.4 2008/12/31 11:15:46 sebastian Exp $ */
#include "php_lcg.h"
#include "uniqid.h"
/* {{{ proto string uniqid([string prefix [, bool more_entropy]])
#ifdef HAVE_GETTIMEOFDAY
PHP_FUNCTION(uniqid)
#endif
char *uniqid;
if (more_entropy) {
spprintf(&uniqid, 0, "%s%08x%05x%.8F", prefix, sec, usec, php_combined_lcg(TSRMLS_C) * 10);
} else {
spprintf(&uniqid, 0, "%s%08x%05x", prefix, sec, usec);
RETURN_STRING(uniqid, 0);
#include "php_lcg.h"
#include "uniqid.h"
/* {{{ proto string uniqid([string prefix [, bool more_entropy]])
#ifdef HAVE_GETTIMEOFDAY
PHP_FUNCTION(uniqid)
#endif
zend_string *uniqid;
if (more_entropy) {
uniqid = strpprintf(0, "%s%08x%05x%.8F", prefix, sec, usec, php_combined_lcg() * 10);
} else {
uniqid = strpprintf(0, "%s%08x%05x", prefix, sec, usec);
RETURN_STR(uniqid);
/* $Id: uniqid.c,v 1.41.2.2.2.2 2007/01/05 15:06:55 iliaa Exp $ */
#include "php_lcg.h"
#include "uniqid.h"
/* {{{ proto string uniqid([string prefix , bool more_entropy])
#ifdef HAVE_GETTIMEOFDAY
PHP_FUNCTION(uniqid)
#endif
char *uniqid;
if (more_entropy) {
spprintf(&uniqid, 0, "%s%08x%05x%.8F", prefix, sec, usec, php_combined_lcg(TSRMLS_C) * 10);
} else {
spprintf(&uniqid, 0, "%s%08x%05x", prefix, sec, usec);
RETURN_STRING(uniqid, 0);
/**
* The UniqID Random Number Source
*
* This uses the internal `uniqid()` function to generate low strength random
/**
* The UniqID Random Number Source
*
* This uses the internal `uniqid()` function to generate low strength random
*/
class UniqID implements \CryptLib\Random\Source {
while (strlen($result) < $size) {
$result = uniqid($result, true);
/**
* The UniqID Random Number Source
*
* This uses the internal `uniqid()` function to generate low strength random
/**
* The UniqID Random Number Source
*
* This uses the internal `uniqid()` function to generate low strength random
*/
class UniqID implements \PasswordLib\Random\Source {
while (strlen($result) < $size) {
$result = uniqid($result, true);
/**
* The UniqID Random Number Source
*
* This uses the internal `uniqid()` function to generate low strength random
/**
* The UniqID Random Number Source
*
* This uses the internal `uniqid()` function to generate low strength random
*/
class UniqID implements \RandomLib\Source {
while (strlen($result) < $size) {
$result = uniqid($result, true);
* @license New BSD License
* @version $Id: Uniqid.php 5 2009-04-24 01:48:48Z gutierrezandresfelipe $
/**
* UniqIdGenerator
*
* @license New BSD License
* @link http://www.php.net/uniqid
/**
* UniqId generado
*/
protected $_uniqid;
public function __construct(){
$this->_uniqid = md5(uniqid(mt_rand(), true));
public function setIdentifier($record){
$record->writeAttribute($this->_identityColumn, $this->_uniqid);
function uniqid (prefix, more_entropy) {
// + original by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
// % note 1: Uses an internal counter (in php_js global) to avoid collision
// * example 1: uniqid();
// * returns 1: 'a30285b160c14'
// * example 2: uniqid('foo');
// * returns 2: 'fooa30285b1cd361'
// * example 3: uniqid('bar', true);
// END REDUNDANT
if (!this.php_js.uniqidSeed) { // init seed with big random int
this.php_js.uniqidSeed = Math.floor(Math.random() * 0x75bcd15);
}
this.php_js.uniqidSeed++;
retId += formatSeed(parseInt(new Date().getTime() / 1000, 10), 8);
retId += formatSeed(this.php_js.uniqidSeed, 5); // add seed hex string