如果 URL 有 $_get 值，PHP_SELF 不工作？

Question

我的页面 url 类似于 http://localhost/coursera/instructor/course.php?id=1&name=web%20development&section=overview

在那个页面上我有一个像

这样的表格

<form action="<?php echo $_SERVER["PHP_SELF"];?>" method="post">       
 <div class="form-group">
  <textarea class="form-control" placeholder="What will students need to know or do before starting this course? Who is your target student? At the end of my course, students will be able to..." rows="8" required="" name="description"></textarea>
</div>                                   
 <button type="submit" class="btn btn-info btn-fill btn-block" name="overview">Save</button>  
</form>

但问题是 <?php echo htmlspecialchars($_SERVER["PHP_SELF"]);?> 和 <?php echo $_SERVER["PHP_SELF"];?> 与所有 $_Get 值 return 不同 url。

无论如何要将表单 return 制作到同一页面，因为我无法对 $_Get 值进行硬编码。

谢谢。

编辑：

print_r($_SERVER["PHP_SELF"]);

正在显示 /coursera/instructor/course.php 但我想要 http://localhost/coursera/instructor/course.php?id=1&name=web%20development&section=overview 有什么办法吗？

Answer 1

更新 1：

I want that when I submit the form i should return to same url but it is not

如果您希望表单 return 到同一页面，您只需将 action 属性留空即可。

<form method="post" action="">

更新二：

虽然它在工作，但根据 W3C 文档，它不是一个有效值。

The action and formaction content attributes, if specified, must have a value that is a valid non-empty URL potentially surrounded by spaces.

请注意，PHP_SELF 没有 return 查询字符串 (?x=y&z=d)。只有目录和文件名。

PHP_SELF

The filename of the currently executing script, relative to the document root. For instance, $_SERVER['PHP_SELF'] in a script at the address http://example.com/foo/bar.php would be /foo/bar.php. The FILE constant contains the full path and filename of the current (i.e. included) file. If PHP is running as a command-line processor this variable contains the script name since PHP 4.3.0. Previously it was not available.

如果 URL 有 $_get 值，PHP_SELF 不工作？

PHP_SELF not working if URL has $_get value?

php

superglobals