How to make text field to read in PHP?

[Anon]

(How to make||Does any software has||Does any website has) a text field which can give visiter to type their PHP code and click a submit button to get its results?

Chinese:
(¦p¦ó½s¼g¤@­Ó/¨º­Óºô¯¸¦³/¨º­Ó³n¥ó¦³)¥i¶ñ¤Jphp code§@´ú¸Õtext field?

[tomhath]

You could easily do it with the "eval" function. But it would open a big, big security hole on your server. Anybody could execute anything.

[Anon]

Thank you very much!!!
Unluckily, I am a newbie in programming. So, would you mind give/post an example for me?

I am confusing when can I test the PHP by a shortcut. I really need it to start learning the PHP.

Thanks again~

[Anon]

Let's say that your form field is called "code" and you're using POST:

$str = $_POST['code'];
print eval($str);

But yeah, it does leave a huge security hole. The user could enter this into the field:

<? print file("/etc/passwd"); ?>

and he might be able to look at the password file on your Linux server...(or he might get errors)... but still, it is bad practice to let the user execute ANY code.

Diego

[Anon]

Hi, Diego Huang
I am going to try it.
Thank you very much!