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

WBOYOriginal: 2016-07-25 08:56:381173browse

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>

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

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