From 7e4801df22a4eb23abd8909c42d45676eb2fceeb Mon Sep 17 00:00:00 2001
From: dongyado <slaying.monsters@gmail.com>
Date: Thu, 16 Jun 2016 16:28:50 +0800
Subject: [PATCH] ip2region extension for php7

---
 .../php_extension/php7/ip2region/.gitignore   |  37 ++
 binding/php_extension/php7/ip2region/CREDITS  |   2 +
 .../php_extension/php7/ip2region/README.md    |  29 ++
 .../php_extension/php7/ip2region/config.m4    |  63 ++++
 .../php_extension/php7/ip2region/config.w32   |  12 +
 .../php_extension/php7/ip2region/ip2region.c  | 315 ++++++++++++++++++
 .../php7/ip2region/ip2region.php              |  67 ++++
 .../php7/ip2region/lib/README.md              |   4 +
 .../php7/ip2region/php_ip2region.h            |  78 +++++
 .../php7/ip2region/tests/001.phpt             |  22 ++
 10 files changed, 629 insertions(+)
 create mode 100644 binding/php_extension/php7/ip2region/.gitignore
 create mode 100644 binding/php_extension/php7/ip2region/CREDITS
 create mode 100644 binding/php_extension/php7/ip2region/README.md
 create mode 100644 binding/php_extension/php7/ip2region/config.m4
 create mode 100644 binding/php_extension/php7/ip2region/config.w32
 create mode 100644 binding/php_extension/php7/ip2region/ip2region.c
 create mode 100644 binding/php_extension/php7/ip2region/ip2region.php
 create mode 100644 binding/php_extension/php7/ip2region/lib/README.md
 create mode 100644 binding/php_extension/php7/ip2region/php_ip2region.h
 create mode 100644 binding/php_extension/php7/ip2region/tests/001.phpt

diff --git a/binding/php_extension/php7/ip2region/.gitignore b/binding/php_extension/php7/ip2region/.gitignore
new file mode 100644
index 0000000..4a8300f
--- /dev/null
+++ b/binding/php_extension/php7/ip2region/.gitignore
@@ -0,0 +1,37 @@
+.deps
+*.lo
+*.la
+*.swp
+*~
+.libs
+acinclude.m4
+aclocal.m4
+autom4te.cache
+build
+config.guess
+config.h
+config.h.in
+config.log
+config.nice
+config.status
+config.sub
+configure
+configure.in
+include
+install-sh
+libtool
+ltmain.sh
+Makefile
+Makefile.fragments
+Makefile.global
+Makefile.objects
+missing
+mkinstalldirs
+modules
+run-tests.php
+tests/*/*.diff
+tests/*/*.out
+tests/*/*.php
+tests/*/*.exp
+tests/*/*.log
+tests/*/*.sh
diff --git a/binding/php_extension/php7/ip2region/CREDITS b/binding/php_extension/php7/ip2region/CREDITS
new file mode 100644
index 0000000..8c85c6f
--- /dev/null
+++ b/binding/php_extension/php7/ip2region/CREDITS
@@ -0,0 +1,2 @@
+ip2region
+
diff --git a/binding/php_extension/php7/ip2region/README.md b/binding/php_extension/php7/ip2region/README.md
new file mode 100644
index 0000000..f1a1583
--- /dev/null
+++ b/binding/php_extension/php7/ip2region/README.md
@@ -0,0 +1,29 @@
+# ip2region 的PHP拓展(php7版本)
+
+### 安装步骤
+* git clone https://github.com/lionsoul2016/ip2region.git
+* cd ip2region
+* cp binding/php_extension/php5/ip2region 到 php source code 的ext目录下
+* cp binding/c/下面所有的文件到 php source code 的ext/ip2region/lib 目录下
+* 在ext/ip2region下，运行 
+
+        phpize
+        ./configure
+        make && sudo make install
+
+* 配置ip2region.ini 指定db_file路径，(cli/fpm)
+    
+        extension=ip2region.so
+        ip2region.db_file=/path/to/ip2region.db
+
+ip2region.db 在项目根目录下的data文件夹下
+
+* 测试 
+
+在ext/ip2region/下运行
+    
+        php ip2region.php
+
+### 使用
+
+参考ip2region/ip2region.php
diff --git a/binding/php_extension/php7/ip2region/config.m4 b/binding/php_extension/php7/ip2region/config.m4
new file mode 100644
index 0000000..2679eef
--- /dev/null
+++ b/binding/php_extension/php7/ip2region/config.m4
@@ -0,0 +1,63 @@
+dnl $Id$
+dnl config.m4 for extension ip2region
+
+dnl Comments in this file start with the string 'dnl'.
+dnl Remove where necessary. This file will not work
+dnl without editing.
+
+dnl If your extension references something external, use with:
+
+dnl  PHP_ARG_WITH(ip2region, for ip2region support,
+dnl Make sure that the comment is aligned:
+dnl [  --with-ip2region             Include ip2region support])
+
+dnl Otherwise use enable:
+
+PHP_ARG_ENABLE(ip2region, whether to enable ip2region support,
+Make sure that the comment is aligned:
+[  --enable-ip2region           Enable ip2region support])
+
+if test "$PHP_IP2REGION" != "no"; then
+dnl   dnl Write more examples of tests here...
+dnl 
+dnl   dnl # --with-ip2region -> check with-path
+dnl    SEARCH_PATH="/home/slayer/code/php-5.6.7/ext/ip2region/lib "     # you might want to change this
+dnl    SEARCH_FOR="ip2region.h"  # you most likely want to change this
+dnl    if test -r $PHP_IP2REGION/$SEARCH_FOR; then # path given as parameter
+dnl      IP2REGION_DIR=$PHP_IP2REGION
+dnl    else # search default path list
+dnl      AC_MSG_CHECKING([for ip2region files in default path])
+dnl      for i in $SEARCH_PATH ; do
+dnl        if test -r $i/$SEARCH_FOR; then
+dnl          IP2REGION_DIR=$i
+dnl          AC_MSG_RESULT(found in $i)
+dnl        fi
+dnl      done
+dnl    fi
+dnl   
+dnl    if test -z "$IP2REGION_DIR"; then
+dnl      AC_MSG_RESULT([not found])
+dnl      AC_MSG_ERROR([Please reinstall the ip2region distribution])
+dnl    fi
+dnl 
+dnl    dnl # --with-ip2region -> add include path
+dnl    PHP_ADD_INCLUDE($IP2REGION_DIR/include)
+dnl 
+dnl    dnl # --with-ip2region -> check for lib and symbol presence
+dnl    LIBNAME=ip2region # you may want to change this
+dnl    LIBSYMBOL=ip2region # you most likely want to change this 
+dnl 
+dnl    PHP_CHECK_LIBRARY($LIBNAME,$LIBSYMBOL,
+dnl    [
+dnl      PHP_ADD_LIBRARY_WITH_PATH($LIBNAME, $IP2REGION_DIR/$PHP_LIBDIR, IP2REGION_SHARED_LIBADD)
+dnl      AC_DEFINE(HAVE_IP2REGIONLIB,1,[ ])
+dnl    ],[
+dnl      AC_MSG_ERROR([wrong ip2region lib version or lib not found])
+dnl    ],[
+dnl      -L$IP2REGION_DIR/$PHP_LIBDIR -lm
+dnl    ])
+dnl   
+dnl    PHP_SUBST(IP2REGION_SHARED_LIBADD)
+dnl 
+     PHP_NEW_EXTENSION(ip2region, ip2region.c lib/ip2region.c , $ext_shared)
+fi
diff --git a/binding/php_extension/php7/ip2region/config.w32 b/binding/php_extension/php7/ip2region/config.w32
new file mode 100644
index 0000000..e09686c
--- /dev/null
+++ b/binding/php_extension/php7/ip2region/config.w32
@@ -0,0 +1,12 @@
+// $Id$
+//
+// If your extension references something external, use ARG_WITH
+// ARG_WITH("ip2region", "for ip2region support", "no");
+
+// Otherwise, use ARG_ENABLE
+// ARG_ENABLE("ip2region", "enable ip2region support", "no");
+
+if (PHP_IP2REGION != "no") {
+	EXTENSION("ip2region", "ip2region.c");
+}
+
diff --git a/binding/php_extension/php7/ip2region/ip2region.c b/binding/php_extension/php7/ip2region/ip2region.c
new file mode 100644
index 0000000..60d389d
--- /dev/null
+++ b/binding/php_extension/php7/ip2region/ip2region.c
@@ -0,0 +1,315 @@
+/*
+  +----------------------------------------------------------------------+
+  | PHP Version 5                                                        |
+  +----------------------------------------------------------------------+
+  | Copyright (c) 1997-2015 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: dongyado<dongyado@gmail.com>                                 |
+  +----------------------------------------------------------------------+
+*/
+
+/* $Id$ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "php.h"
+#include "php_ini.h"
+#include "ext/standard/info.h"
+#include "lib/ip2region.h"
+#include "php_ip2region.h"
+#include <sys/time.h>
+
+ZEND_DECLARE_MODULE_GLOBALS(ip2region)
+
+/* True global resources - no need for thread safety here */
+static int le_ip2region;
+static ip2region_t      g_resource_ptr;
+static ip2region_entry  g_resource;
+
+// class
+static zend_class_entry *ip2region_class_entry_ptr;
+
+
+//static double getTime()
+//{
+//	struct timeval tv;
+//	struct timezone tz;
+//	gettimeofday(&tv, &tz);
+//
+//	return (tv.tv_sec * 1000 + ((double)tv.tv_usec)/1000);
+//}
+
+
+void search(
+		ip2region_t g_resouce_ptr, 
+		uint_t (*func_ptr) (ip2region_t, uint_t, datablock_t), 
+		long ip, 
+		zval ** return_value, 
+		datablock_t _block)
+{
+	int res = 0;
+
+	if (g_resource_ptr != NULL){
+		res 	= (*func_ptr)(g_resouce_ptr, (uint_t) ip, _block);
+	}
+
+	array_init( *return_value );
+
+	if ( res == 1 )
+	{
+		add_assoc_long( *return_value,   "cityId", (*_block).city_id);
+		//add_assoc_string( *return_value, "region", (*_block).region, 1);
+		// for phpng
+		add_assoc_string( *return_value, "region", (*_block).region);
+	} else {
+		add_assoc_long( *return_value,   "cityId", 0);
+		//add_assoc_string( *return_value, "region", "[Error] Search Failed! Please check the  path of ip2region db file.", 1);
+		// for phpng
+		add_assoc_string( *return_value, "region", "[Error] Search Failed! Please check the  path of ip2region db file.");
+	}
+}
+
+
+/* {{{ php_ip2region_init_globals
+ */
+static void php_ip2region_init_globals(zend_ip2region_globals *ip2region_globals)
+{
+	ip2region_globals->db_file = NULL;
+}
+/* }}} */
+
+
+/* {{{ PHP_INI
+ */
+PHP_INI_BEGIN()
+    STD_PHP_INI_ENTRY("ip2region.db_file", NULL, PHP_INI_ALL, OnUpdateString, db_file, zend_ip2region_globals, ip2region_globals)
+PHP_INI_END()
+/* }}} */
+
+
+/* {{{ 
+ *  btree search string
+ * */
+PHP_METHOD(ip2region_class_entry_ptr, btreeSearchString)
+{
+	char *ip = NULL;
+	size_t arg_len;
+	datablock_entry  _block;
+	uint_t (*func_ptr) (ip2region_t, uint_t, datablock_t);
+
+	if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "s", &ip, &arg_len) == FAILURE) {
+		return;
+	}
+
+	func_ptr = ip2region_btree_search;
+
+	search(g_resource_ptr, func_ptr, ip2long(ip), &return_value, &_block);
+}
+/* }}} */
+
+
+
+/* {{{ 
+ *  btree search 
+ * */
+PHP_METHOD(ip2region_class_entry_ptr, btreeSearch)
+{
+	long ip;
+	datablock_entry  _block;
+	uint_t (*func_ptr) (ip2region_t, uint_t, datablock_t);
+
+	if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "l", &ip) == FAILURE) {
+		return;
+	}
+
+	func_ptr = ip2region_btree_search;
+
+	search(g_resource_ptr, func_ptr, ip, &return_value, &_block);
+}
+/* }}} */
+
+
+/* {{{
+ * binary search string
+ * */
+PHP_METHOD(ip2region_class_entry_ptr,  binarySearchString)
+{
+	char *ip = NULL;
+	//int arg_len;
+	// for phpng
+	size_t arg_len;
+	datablock_entry  _block;
+	uint_t (*func_ptr) (ip2region_t, uint_t, datablock_t);
+
+	if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "s", &ip, &arg_len) == FAILURE) {
+		return;
+	}
+
+	func_ptr = ip2region_binary_search;
+
+	search(g_resource_ptr, func_ptr, ip2long(ip), &return_value, &_block);
+}
+/* }}} */
+
+
+/* {{{
+ * binary search 
+ * */
+PHP_METHOD(ip2region_class_entry_ptr,  binarySearch)
+{
+	long ip;
+	datablock_entry  _block;
+	uint_t (*func_ptr) (ip2region_t, uint_t, datablock_t);
+
+	if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "l", &ip) == FAILURE) {
+		return;
+	}
+
+	func_ptr = ip2region_binary_search;
+	search(g_resource_ptr, func_ptr, ip, &return_value, &_block);
+}
+/* }}} */
+
+
+
+
+/* {{{ PHP_MSHUTDOWN_FUNCTION
+ */
+PHP_MSHUTDOWN_FUNCTION(ip2region)
+{
+	UNREGISTER_INI_ENTRIES();
+	ip2region_destroy(&g_resource);
+	return SUCCESS;
+}
+/* }}} */
+
+
+/* Remove if there's nothing to do at request start */
+/* {{{ PHP_RINIT_FUNCTION
+ */
+PHP_RINIT_FUNCTION(ip2region)
+{
+	return SUCCESS;
+}
+/* }}} */
+
+
+/* Remove if there's nothing to do at request end */
+/* {{{ PHP_RSHUTDOWN_FUNCTION
+ */
+PHP_RSHUTDOWN_FUNCTION(ip2region)
+{
+	return SUCCESS;
+}
+/* }}} */
+
+
+/* {{{ PHP_MINFO_FUNCTION
+ */
+PHP_MINFO_FUNCTION(ip2region)
+{
+	php_info_print_table_start();
+	php_info_print_table_header(2, "ip2region support", "enabled");
+	php_info_print_table_end();
+
+	DISPLAY_INI_ENTRIES();
+}
+/* }}} */
+
+
+/* {{{ ip2region_class_functions[]
+ *
+ * Every user visible function must have an entry in ip2region_functions[].
+ */
+const zend_function_entry ip2region_class_functions[] = {
+	PHP_ME( ip2region_class_entry_ptr,  btreeSearchString,  NULL, ZEND_ACC_PUBLIC | ZEND_ACC_STATIC)
+	PHP_ME( ip2region_class_entry_ptr,  binarySearchString, NULL, ZEND_ACC_PUBLIC | ZEND_ACC_STATIC )
+	PHP_ME( ip2region_class_entry_ptr,  btreeSearch,  NULL, ZEND_ACC_PUBLIC | ZEND_ACC_STATIC)
+	PHP_ME( ip2region_class_entry_ptr,  binarySearch, NULL, ZEND_ACC_PUBLIC | ZEND_ACC_STATIC )
+	PHP_FE_END	/* Must be the last line in ip2region_functions[] */
+};
+/* }}} */
+
+
+/* {{{ ip2region_functions[]
+ *
+ * Every user visible function must have an entry in ip2region_functions[].
+ */
+const zend_function_entry ip2region_functions[] = {
+	PHP_FE_END	/* Must be the last line in ip2region_functions[] */
+};
+/* }}} */
+
+
+/* {{{ PHP_MINIT_FUNCTION
+ */
+PHP_MINIT_FUNCTION(ip2region)
+{
+	zend_class_entry ip2region_class_entry;
+
+	// @NOTE the line should before REGISTRE_INI_ENTRIES, 
+	// and should not comment it when you have glocbals 
+	ZEND_INIT_MODULE_GLOBALS(ip2region, php_ip2region_init_globals, NULL);  
+	REGISTER_INI_ENTRIES();
+
+
+	if (ip2region_create( &g_resource, IP2REGION_G(db_file)) == 0)
+	{
+		g_resource_ptr = NULL;
+	} else {
+		g_resource_ptr = &g_resource;
+	}
+
+
+	//le_ip2region = zend_register_list_destructors_ex(
+	//	ip2region_destruction_handler, NULL, le_ip2region_name, module_number);
+
+	// init class
+	INIT_CLASS_ENTRY( ip2region_class_entry, "ip2region", ip2region_class_functions);
+	ip2region_class_entry_ptr = 
+		zend_register_internal_class(&ip2region_class_entry TSRMLS_CC);
+
+	return SUCCESS;
+}
+/* }}} */
+
+
+/* {{{ ip2region_module_entry
+ */
+zend_module_entry ip2region_module_entry = {
+	STANDARD_MODULE_HEADER,
+	"ip2region",
+	ip2region_functions,
+	PHP_MINIT(ip2region),
+	PHP_MSHUTDOWN(ip2region),
+	PHP_RINIT(ip2region),		/* Replace with NULL if there's nothing to do at request start */
+	PHP_RSHUTDOWN(ip2region),	/* Replace with NULL if there's nothing to do at request end */
+	PHP_MINFO(ip2region),
+	PHP_IP2REGION_VERSION,
+	STANDARD_MODULE_PROPERTIES
+};
+/* }}} */
+
+
+#ifdef COMPILE_DL_IP2REGION
+ZEND_GET_MODULE(ip2region)
+#endif
+
+/*
+ * Local variables:
+ * tab-width: 4
+ * c-basic-offset: 4
+ * End:
+ * vim600: noet sw=4 ts=4 fdm=marker
+ * vim<600: noet sw=4 ts=4
+ */
diff --git a/binding/php_extension/php7/ip2region/ip2region.php b/binding/php_extension/php7/ip2region/ip2region.php
new file mode 100644
index 0000000..4d9faee
--- /dev/null
+++ b/binding/php_extension/php7/ip2region/ip2region.php
@@ -0,0 +1,67 @@
+<?php
+/**
+ * test shell for ip2region for php
+ *
+ * */
+$br = (php_sapi_name() == "cli")? "":"<br>";
+
+if(!extension_loaded('ip2region')) {
+	dl('ip2region.' . PHP_SHLIB_SUFFIX);
+}
+
+function getTime(){
+    return microtime(true) * 1000;
+}
+
+// test class
+function classBtreeSearch( $ip)
+{
+
+    $start = getTime();
+    //$data  = $ip2region->btreeSearch($ip);
+    $data  = Ip2region::btreeSearchString($ip);
+    $end   = getTime();
+    var_dump($data);
+    echo " btree search string - taken: ", ($end - $start), "\n";
+
+    $start = getTime();
+    $data  = Ip2region:: btreeSearch(ip2long($ip));
+    $end   = getTime();
+    var_dump($data);
+    echo " btree search - taken: ", ($end - $start), "\n";
+}
+
+function classBinarySearch($ip)
+{
+
+    $start = getTime();
+    $data  = Ip2region::binarySearchString($ip);
+    $end   = getTime();
+    var_dump($data);
+    echo " binary search string -taken: ", ($end - $start), "\n";
+
+    $start = getTime();
+    $data  = Ip2region::binarySearch(ip2long($ip));
+    $end   = getTime();
+    var_dump($data);
+    echo " binary search - taken: ", ($end - $start), "\n";
+}
+
+
+function test(){
+    $v1 = rand(0,255);
+    $v2 = rand(0,255);
+    $v3 = rand(0,255);
+    $v4 = rand(0,255);
+    $ip = "{$v1}.{$v2}.{$v3}.{$v4}";
+    classBtreeSearch( $ip );
+    classBinarySearch( $ip );
+}
+
+while(true)
+{
+    test();
+    break;
+    usleep(5000);
+}
+?>
diff --git a/binding/php_extension/php7/ip2region/lib/README.md b/binding/php_extension/php7/ip2region/lib/README.md
new file mode 100644
index 0000000..873c1d2
--- /dev/null
+++ b/binding/php_extension/php7/ip2region/lib/README.md
@@ -0,0 +1,4 @@
+这里放置 
+https://github.com/lionsoul2016/ip2region/tree/master/binding/c
+
+ip2region.c and ip2region.h
diff --git a/binding/php_extension/php7/ip2region/php_ip2region.h b/binding/php_extension/php7/ip2region/php_ip2region.h
new file mode 100644
index 0000000..3ff128b
--- /dev/null
+++ b/binding/php_extension/php7/ip2region/php_ip2region.h
@@ -0,0 +1,78 @@
+/*
+  +----------------------------------------------------------------------+
+  | PHP Version 5                                                        |
+  +----------------------------------------------------------------------+
+  | Copyright (c) 1997-2015 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:  dongyado<dongyado@gmail.com>                                |
+  +----------------------------------------------------------------------+
+*/
+
+/* $Id$ */
+
+#ifndef PHP_IP2REGION_H
+#define PHP_IP2REGION_H
+
+extern zend_module_entry ip2region_module_entry;
+#define phpext_ip2region_ptr &ip2region_module_entry
+
+#define PHP_IP2REGION_VERSION "0.1.0" /* Replace with version number for your extension */
+
+#ifdef PHP_WIN32
+#	define PHP_IP2REGION_API __declspec(dllexport)
+#elif defined(__GNUC__) && __GNUC__ >= 4
+#	define PHP_IP2REGION_API __attribute__ ((visibility("default")))
+#else
+#	define PHP_IP2REGION_API
+#endif
+
+#ifdef ZTS
+#include "TSRM.h"
+#endif
+
+
+
+ZEND_BEGIN_MODULE_GLOBALS(ip2region)
+	char *db_file;
+ZEND_END_MODULE_GLOBALS(ip2region)
+
+/* In every utility function you add that needs to use variables 
+   in php_ip2region_globals, call TSRMLS_FETCH(); after declaring other 
+   variables used by that function, or better yet, pass in TSRMLS_CC
+   after the last function argument and declare your utility function
+   with TSRMLS_DC after the last declared argument.  Always refer to
+   the globals in your function as IP2REGION_G(variable).  You are 
+   encouraged to rename these macros something shorter, see
+   examples in any other php module directory.
+*/
+
+#ifdef ZTS
+#define IP2REGION_G(v) TSRMG(ip2region_globals_id, zend_ip2region_globals *, v)
+#else
+#define IP2REGION_G(v) (ip2region_globals.v)
+#endif
+
+static void php_ip2region_init_globals(zend_ip2region_globals *);
+
+#define le_ip2region_name "Ip2region"
+
+
+void search( ip2region_t, uint_t (*func_ptr) (ip2region_t, uint_t, datablock_t), long , zval **, datablock_t);
+
+#endif	/* PHP_IP2REGION_H */
+/*
+ * Local variables:
+ * tab-width: 4
+ * c-basic-offset: 4
+ * End:
+ * vim600: noet sw=4 ts=4 fdm=marker
+ * vim<600: noet sw=4 ts=4
+ */
diff --git a/binding/php_extension/php7/ip2region/tests/001.phpt b/binding/php_extension/php7/ip2region/tests/001.phpt
new file mode 100644
index 0000000..4a271b2
--- /dev/null
+++ b/binding/php_extension/php7/ip2region/tests/001.phpt
@@ -0,0 +1,22 @@
+--TEST--
+Check for ip2region presence
+--SKIPIF--
+<?php if (!extension_loaded("ip2region")) print "skip"; ?>
+--FILE--
+<?php 
+echo "ip2region extension is available";
+/*
+	you can add regression tests for your extension here
+
+  the output of your test code has to be equal to the
+  text in the --EXPECT-- section below for the tests
+  to pass, differences between the output and the
+  expected text are interpreted as failure
+
+	see php5/README.TESTING for further information on
+  writing regression tests
+
+*/
+?>
+--EXPECT--
+ip2region extension is available