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Example of PHP query string passing value (string value, numeric value)

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Release： 2016-07-25 08:56:38
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This article introduces the method of PHP passing values ​​in query strings, and gives two examples, which are used to pass string values ​​and numeric values ​​respectively. Friends in need, please refer to it.

Example 1, passing string value in query string

<html>
<body>
  <div align="center">
    <p>Click a link to move to a new page:</p>
    Content 1<br />
    Content 2<br />
    Content 3<br />
    <?php
      $page = trim (urldecode (stripslashes ($_GET['page'])));
      if (isset ($page) && $page != ""){
        if (is_file ($page)){
          require_once ($page);
        } else {
          echo "<p>很抱歉，您请求的页面不存在。</p>";
        }
      }
    ?>
  </div>
</body>
</html>
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Example 2, passing numerical value in query string

<html>
<head>
<title>查询字符串传递数值-bbs.it-home.org</title>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
</head>
<body>
  <div align="center">
    <p>Click a link to change the text color of the verbiage below:</p>
    Green<br />
    Red<br />
    Blue<br />
    重置信息
    <?php
      if (isset ($_GET['color'])){
        $color = intval ($_GET['color']);
      } else {
        $color = "";
      }
      if ($color == 1){
        $fontcolor = "00FF00";
      } elseif ($color == 2){
        $fontcolor = "FF0000";
      } elseif ($color == 3){
        $fontcolor = "0000FF";
      } else {
        $fontcolor = "000000";
      }
      ?><p style="color: #<?php echo $fontcolor; ?>; font-weight: bold;">欢迎访问程序员之家网站！</p><?php
    ?>
  </div>
</body>
</html>
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Related labels：
php查询字符串传值(字符串值、数字值)的例子
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