How to set borders in php-PHP Problem-php.cn

How to set borders in php

PHPz

Release： 2023-04-04 11:44:01

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With the continuous development of web applications, how to beautify web pages has become the pursuit of many developers, and setting borders is one of the main beautification methods. For the PHP programming language, setting borders is basically the same as for HTML and CSS. This article will introduce how to set borders for web page elements through PHP code.

1. Set borders through CSS

In HTML files, we can set styles for elements, such as fonts, colors, borders, etc., through CSS code. In PHP, you can also style elements through CSS code.

First, we need to introduce the CSS file into the HTML file. Suppose we want to set a border for an element, we need to write the following code in CSS:

#example {
   border: 1px solid #000;
}

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Where, #example is the ID of the element we want to set a border, 1px is the width of the border, and solid represents the border style is a solid line, #000 means the border is black.

Adding CSS code to HTML documents through PHP code is very simple, just add the following code in the PHP file:

<style type="text/css">
   #example {
      border: 1px solid #000;
   }
</style>

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Among them, the type attribute defines the style type as CSS. In this way, PHP code can add styles to HTML files.

2. Set the border through PHP code

In addition to setting the border style through CSS, we can also directly set the border for HTML elements through PHP code. Here is a simple example:

<!DOCTYPE html>
<html>
  <head>
    <title>设置边框示例</title>
  </head>

  <body>
    <?php
      echo &#39;<div style="border: 1px solid #000;">这是一个带边框的DIV元素。</div>';
    ?>
  </body>
</html>

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In this example, we output a DIV element with a solid black border through PHP code. It should be noted that we use the style attribute here to directly style the element without using an external CSS file.

3. Set borders for multiple elements

If you want to set borders for multiple elements, we can use a loop statement to traverse the element list and use PHP code to set the border style for each element. . The following is an example of setting the border style of multiple DIV elements:

<!DOCTYPE html>
<html>
  <head>
    <title>设置边框示例</title>
  </head>

  <body>
    <?php
      // 定义一个DIV元素列表
      $divs = array(
         &#39;<div>第一个DIV元素。</div>',
         '<div>第二个DIV元素。</div>',
         '<div>第三个DIV元素。</div>',
      );

      // 遍历列表，并为每个DIV元素设置边框样式
      foreach ($divs as $div) {
         echo '<div style="border: 1px solid #000;">' . $div . '</div>';
      }
    ?>
  </body>
</html>

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In this example, we use a PHP array to define multiple DIV elements, and use a foreach loop statement to traverse all elements in the array, targeting Each element uses the style attribute to set the border style, and finally outputs a list of DIV elements with border styles.

Summary

This article introduces how to set borders for HTML web page elements through PHP code. In addition to setting border styles through CSS style sheets, we can also directly use PHP code to set borders for elements. At the same time, we can also use loop statements to set border styles for multiple elements at the same time. Through these methods, we can easily add styles to web page elements to achieve the purpose of web page beautification.

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