在 PHP 中回显 $_POST
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Echo an $_POST in PHP
提问by Victor Bjelkholm
How can I print a $_POST?
我怎样才能打印一个$_POST?
Example:
例子:
echo $_POST['data'];
This returns nothing...
这什么都不返回...
回答by Jamex
You can also wrap your code with <pre>tags to make your array prints out nicer instead of just 1 continuous line. A trick that was shown by a member on this site.
您还可以用<pre>标签包装您的代码,以使您的数组打印效果更好,而不仅仅是 1 条连续线。由本网站的成员展示的技巧。
<pre>
<?php var_dump($_POST); ?>
</pre>
回答by Tim Ridgely
Your code is correct.
你的代码是正确的。
You can use either:
您可以使用:
var_dump($_POST);
or
或者
print_r($_POST);
to print out the entire POST array for debugging.
打印出整个 POST 数组以进行调试。
回答by Ignacio Vazquez-Abrams
You can only show the values of keys that exist. array_keys()returns an array containing the keys that exist in the array. If there is no output for a key despite the fact that the key exists then the array may contain an empty value for that key.
您只能显示存在的键的值。array_keys()返回一个包含数组中存在的键的数组。如果尽管键存在但没有键的输出,则数组可能包含该键的空值。

