if($_SERVER['REQUEST_METHOD'] == 'POST') 不起作用

Question

I can't explain it, because I'm studying the book learning PHP and I went to test this example and it doesn't work at all.我无法解释它，因为我正在研究学习PHP的书，我去测试这个例子，它根本不起作用。

<?php
if($_SERVER['REQUEST_METHOD'] == 'POST') {
    print "hello, ". $_POST['my_name'];
} 
else {
    print<<<_HTML_
         <form method="post" action="$_SERVER[PHP_SELF]">
         Your name: <input type="text" name="my name">
         <br>
         <input type="submit" value="Say Hello">
        </form>
        _HTML_;
}
?>

Answer 1

As said in the comments your HEREDOC (the <<<HTML and HTML; parts) is incorrectly formed.正如评论中所说，您的 HEREDOC（ <<<HTML和HTML;部分）的格式不正确。 Below is the corrected one so you can see the difference.以下是更正后的，因此您可以看到差异。

<?php
if ($_SERVER['REQUEST_METHOD'] == 'POST') {
    print "hello, " . $_POST['my_name'];
} else {
    print<<<HTML
         <form method="post" action="$_SERVER[PHP_SELF]">
         Your name: <input type="text" name="my name">
         <br>
         <input type="submit" value="Say Hello">
        </form>
HTML;
}

Below is a screen for a working example on replit.com as the OP is using.以下是 OP 正在使用的 replit.com 上的工作示例屏幕。

if($_SERVER['REQUEST_METHOD'] == 'POST') 不起作用

问题描述

1 个解决方案

解决方案1
2 2021-04-06 19:30:40

if($_SERVER['REQUEST_METHOD'] == 'POST') 不起作用

问题描述

1 个解决方案

解决方案1 2 2021-04-06 19:30:40

解决方案1
2 2021-04-06 19:30:40