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How to set image as background in php

Oct 16, 2019 pm 03:39 PM

css html

We can output the style code in php to change the html background image.

&lt;!DOCTYPE html&gt;
&lt;html&gt;
&lt;head&gt;
&lt;meta charset=&quot;UTF-8&quot;&gt;
&lt;title&gt;Document&lt;/title&gt;
&lt;/head&gt;
&lt;body&gt;
&lt;!-- 通过设置style实现改变背景 --&gt;
&lt;body &lt;?php echo &#39;style=&quot;background:url(图片.jpg);&quot;&#39;; ?&gt; &gt;
&lt;form action=&quot;DataBase.php&quot; method=&quot;post&quot;&gt;
用户名：&lt;input type=&quot;text&quot; name=&quot;username&quot; maxlength=&quot;40&quot;/&gt;&lt;br/&gt;
密码：&lt;input type=&quot;password&quot; name=&quot;pwd&quot; maxlength=&quot;40&quot;/&gt;&lt;br/&gt;
&lt;input type=&quot;submit&quot; value=&quot;提交&quot;/&gt;
&lt;/form&gt;
&lt;/body&gt;
&lt;/body&gt;
&lt;/html&gt;

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However, it is not recommended to output the style file in the PHP code. It should be written in the HTML document, or the CSS style file should be written separately and introduced in the HTML.

1. Write css in html

&lt;!-- 在head标签内书写css --&gt;
&lt;style&gt;
body{background:url(背景图片地址);}
&lt;/style&gt;

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2. Import css files

//main.css文件
body{background:url(背景图片地址);}

//在html文件head标签中引入
&lt;link rel=&quot;stylesheet&quot; href=&quot;main.css&quot;&gt;

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