1 files changed, 96 insertions, 0 deletions
diff --git a/ext/standard/uniqid.c b/ext/standard/uniqid.c
new file mode 100644
index 0000000..eac389c
--- /dev/null
+++ b/ext/standard/uniqid.c
@@ -0,0 +1,96 @@
+/*
+   +----------------------------------------------------------------------+
+   | PHP Version 5                                                        |
+   +----------------------------------------------------------------------+
+   | Copyright (c) 1997-2013 The PHP Group                                |
+   +----------------------------------------------------------------------+
+   | This source file is subject to version 3.01 of the PHP license,      |
+   | that is bundled with this package in the file LICENSE, and is        |
+   | available through the world-wide-web at the following url:           |
+   | http://www.php.net/license/3_01.txt                                  |
+   | If you did not receive a copy of the PHP license and are unable to   |
+   | obtain it through the world-wide-web, please send a note to          |
+   | license@php.net so we can mail you a copy immediately.               |
+   +----------------------------------------------------------------------+
+   | Author: Stig Sæther Bakken <ssb@php.net>                             |
+   +----------------------------------------------------------------------+
+ */
+
+/* $Id$ */
+
+#include "php.h"
+
+#include <stdlib.h>
+#if HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+
+#include <string.h>
+#include <errno.h>
+
+#include <stdio.h>
+#ifdef PHP_WIN32
+#include "win32/time.h"
+#else
+#include <sys/time.h>
+#endif
+
+#include "php_lcg.h"
+#include "uniqid.h"
+
+/* {{{ proto string uniqid([string prefix [, bool more_entropy]])
+   Generates a unique ID */
+#ifdef HAVE_GETTIMEOFDAY
+PHP_FUNCTION(uniqid)
+{
+	char *prefix = "";
+#if defined(__CYGWIN__)
+	zend_bool more_entropy = 1;
+#else
+	zend_bool more_entropy = 0;
+#endif
+	char *uniqid;
+	int sec, usec, prefix_len = 0;
+	struct timeval tv;
+
+	if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "|sb", &prefix, &prefix_len,
+							  &more_entropy)) {
+		return;
+	}
+
+#if HAVE_USLEEP && !defined(PHP_WIN32)
+	if (!more_entropy) {
+#if defined(__CYGWIN__)
+		php_error_docref(NULL TSRMLS_CC, E_WARNING, "You must use 'more entropy' under CYGWIN");
+		RETURN_FALSE;
+#else
+		usleep(1);
+#endif
+	}
+#endif
+	gettimeofday((struct timeval *) &tv, (struct timezone *) NULL);
+	sec = (int) tv.tv_sec;
+	usec = (int) (tv.tv_usec % 0x100000);
+
+	/* The max value usec can have is 0xF423F, so we use only five hex
+	 * digits for usecs.
+	 */
+	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);
+}
+#endif
+/* }}} */
+
+/*
+ * Local variables:
+ * tab-width: 4
+ * c-basic-offset: 4
+ * End:
+ * vim600: sw=4 ts=4 fdm=marker
+ * vim<600: sw=4 ts=4
+ */