<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[a0625tong的博客]]></title><description><![CDATA[]]></description><link>https://blog.youkuaiyun.com/a0625tong</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; a0625tong]]></copyright><item><title><![CDATA[PHP基础知识之连接数据库等操作]]></title><link>https://blog.youkuaiyun.com/a0625tong/article/details/84931347</link><guid>https://blog.youkuaiyun.com/a0625tong/article/details/84931347</guid><author>a0625tong</author><pubDate>Sun, 09 Dec 2018 20:12:40 +0800</pubDate><description><![CDATA[
1.mysqli连接数据库


&amp;lt;?php
header('content-type:text/html;charset=utf-8');
//连接mysql数据库 
$mysqli = @new mysqli(&quot;localhost&quot;,&quot;root&quot;,&quot;&quot;,&quot;myschool&quot;);//new 实例化对象
echo '连接数据库成功';


 



  2.检测数据库连接是否成功(如果失败,...]]></description><category></category></item><item><title><![CDATA[PHP基础知识之生成验证码（画布）]]></title><link>https://blog.youkuaiyun.com/a0625tong/article/details/84637047</link><guid>https://blog.youkuaiyun.com/a0625tong/article/details/84637047</guid><author>a0625tong</author><pubDate>Thu, 29 Nov 2018 17:55:56 +0800</pubDate><description><![CDATA[
 小知识：

     创建画布： imagecreatetruecolor(宽，高) //成功返回一个资源，失败返回false

     创建颜色：imagecolorallocate（）

     填充区域：imagefill（）

     输出画布：imagepng()

     销毁图像  :imagedestroy()



&amp;lt;?php
//案例：生成验证码
header...]]></description><category></category></item><item><title><![CDATA[PHP基础知识之页面跳转]]></title><link>https://blog.youkuaiyun.com/a0625tong/article/details/84205413</link><guid>https://blog.youkuaiyun.com/a0625tong/article/details/84205413</guid><author>a0625tong</author><pubDate>Sun, 18 Nov 2018 21:49:22 +0800</pubDate><description><![CDATA[
一.header指令页面跳转


1.header(&quot;location:regieter.html&quot;);//不友好直接跳转到那个页面
2.header(&quot;refresh:3;url=register.html&quot;);//延迟3秒页面跳转
die(&quot;非法访问，请访问注册页面&quot;)；


 



 二javascript页面跳转


1. echo &quot;&amp;lt;script&amp;gt; window.loc...]]></description><category></category></item><item><title><![CDATA[PHP基础知识之遍历数组-foreach]]></title><link>https://blog.youkuaiyun.com/a0625tong/article/details/83986876</link><guid>https://blog.youkuaiyun.com/a0625tong/article/details/83986876</guid><author>a0625tong</author><pubDate>Sat, 17 Nov 2018 22:46:27 +0800</pubDate><description><![CDATA[foreach语句：循环数组：就是把每个元素输出来

一：索引数组的遍历


索引数组的遍历
1.
$arr5=array(5=&amp;gt;'apple',6=&amp;gt;'orange',50,8=&amp;gt;70);
foreach($arr5 as $v){//$v可以随便取，存的元素的值
    echo $v.'&amp;lt;br&amp;gt;';//apple orange 50 70
}
2.
foreac...]]></description><category></category></item><item><title><![CDATA[PHP基础知识之变量]]></title><link>https://blog.youkuaiyun.com/a0625tong/article/details/83817359</link><guid>https://blog.youkuaiyun.com/a0625tong/article/details/83817359</guid><author>a0625tong</author><pubDate>Wed, 07 Nov 2018 08:52:44 +0800</pubDate><description><![CDATA[变量特点：
1变量不需指定数据类型（弱类型）
2变量名必须以$开头
3命名规则：由英文字母，数字，下划线组成但不能数字开头
4对大小写敏感


&amp;lt;?php
//变量
$name='张三';//直接使用变量，不指定数据类型
$age=20;
//输出变量的值
echo $name;
echo '&amp;lt;br&amp;gt;';//输出换行符
echo $age;





 


弱类型
&amp;lt;?p...]]></description><category></category></item></channel></rss>