From 2a10155772e869b1f5c2d9582f362c74f1598cd3 Mon Sep 17 00:00:00 2001
From: changwei <867597730@qq.com>
Date: Thu, 7 Jun 2018 02:38:39 +0800
Subject: [PATCH 1/2] =?UTF-8?q?=E5=A2=9E=E5=8A=A0=E6=94=AF=E6=8C=81?=
 =?UTF-8?q?=E9=AA=8C=E8=AF=81=E7=A0=81=E5=9B=BE=E7=89=87=E7=82=B9=E5=87=BB?=
 =?UTF-8?q?=E8=87=AA=E5=8A=A8=E6=9B=B4=E6=8D=A2?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

这算是一个比较常用的需求了
---
 src/helper.php | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/src/helper.php b/src/helper.php
index 914c749..380e0c4 100644
--- a/src/helper.php
+++ b/src/helper.php
@@ -50,6 +50,19 @@ function captcha_img($id = '')
 }
 
 
+/**
+ * @param string $id
+ * @param string $element 验证码HTML元素ID
+ * @return string
+ */
+function captcha_img_with_replacement($id = '', $element = 'think-captcha')
+{
+    return '<img src="' . captcha_src($id) . '" alt="' . $element .
+        '" id="think-captcha" onclick="document.getElementById("' . $element . '").src="' .
+        captcha_src($id) . '"+Math.random()' . '/>';
+}
+
+
 /**
  * @param        $value
  * @param string $id

From d7dcc6a61505345859a6a123ab2b681a2800fa58 Mon Sep 17 00:00:00 2001
From: changwei <867597730@qq.com>
Date: Thu, 7 Jun 2018 02:43:57 +0800
Subject: [PATCH 2/2] =?UTF-8?q?=E8=A7=84=E8=8C=83readme=E6=A0=BC=E5=BC=8F?=
 =?UTF-8?q?=EF=BC=8C=E5=A2=9E=E5=8A=A0=E7=82=B9=E5=87=BB=E5=9B=BE=E7=89=87?=
 =?UTF-8?q?=E8=87=AA=E5=8A=A8=E6=9B=B4=E6=8D=A2=E9=AA=8C=E8=AF=81=E7=A0=81?=
 =?UTF-8?q?=E7=9A=84=E5=8A=9F=E8=83=BD=E8=AF=B4=E6=98=8E?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 README.md | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/README.md b/README.md
index 0fced29..1a21be6 100644
--- a/README.md
+++ b/README.md
@@ -5,9 +5,9 @@ thinkphp5 验证码类库
 > composer require topthink/think-captcha
 
 
-##使用
+## 使用
 
-###模板里输出验证码
+### 模板里输出验证码
 
 ~~~
 <div>{:captcha_img()}</div>
@@ -18,6 +18,11 @@ thinkphp5 验证码类库
 ~~~
 > 上面两种的最终效果是一样的
 
+或者带有点击图片自动更换验证码的功能
+~~~
+<div>{:captcha_img_with_replacement()}</div>
+~~~
+
 ### 控制器里验证
 使用TP5的内置验证功能即可
 ~~~