PHP form - Question mark within action attribute (action="?").

Question

The ex-programmer wrote this code: action="?". I couldn't find any PHP script with it. Can anyone tell me what does the form call when submit? I guess it should be the PHP_SELF, but I am not sure.

<form action="?" method="POST" id="pa_form" novalidate="novalidate">

Unless there is something that modifies the action, it will most back to itself. — datasage, Jan 14 '13 at 22:06
Dont use PHP_SELF its XSS unsafe, if you want to post back to the form just leave it blank `action=""` — Lawrence Cherone, Jan 14 '13 at 22:07
Possible duplicate http://stackoverflow.com/questions/1131781/is-it-a-good-practice-to-use-an-empty-url-for-a-html-forms-action-attribute-a — Reactgular, Jan 14 '13 at 22:22
Or you can omit the `action` attribute entirely and it will post back to itself by default. — Jeff Puckett, Aug 14 '16 at 04:54

score 4 · Answer 1 · answered Jan 14 '13 at 22:07

4

I believe that will cause the browser to send the form request to the current URL, but with an empty querystring.

IE: If you are currently on http://example.com/foo?bar=1 - the target form request will go to the URL "http://example.com/foo?"

answered Jan 14 '13 at 22:07

Eugene

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score 1 · Answer 2 · answered Jan 14 '13 at 22:05

1

I believe it's a self-reference. If it's in the same php script, it just means "self". Typically there are parameters after the question mark (?id=5), however in this case there are none.

answered Jan 14 '13 at 22:05

Kermit

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PHP form - Question mark within action attribute (action="?").

2 Answers2