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header(...)

 

header(...), The purpose...?
Vomster

30 Jun, 2009 - 04:19 AM
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What is the purpose of using this function?

I ask because can't you just use require or include?

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shadhin

RE: Header(...)

30 Jun, 2009 - 04:26 AM
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header() function sends a raw HTTP header to a client.
Take a look at the manual for details.
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Vomster

RE: Header(...)

30 Jun, 2009 - 05:19 AM
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I read that before I posted but I didn't understand the concept I guess. I'm just confused as to why someone would use that over require and include.

Was looking for someone to give me a better example and reason than what they had on that page.
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thehat

RE: Header(...)

30 Jun, 2009 - 05:28 AM
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Require and include are for importing additional files into your execution.

Header lets you add http headers. These headers contain a variety of information about your page, and include any data sent by POST. A very common use of header is to perform a server-side redirect: header('Location: www.google.com');. The benefit of this over a javascript or meta tag redirect is that it can be performed before any information is sent to the client's machine, making it much faster.

Edit: it's also worth noting that header() cannot be used after any page content has been processed.

This post has been edited by thehat: 30 Jun, 2009 - 05:30 AM
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Vomster

RE: Header(...)

30 Jun, 2009 - 05:58 AM
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So basically it's used for redirecting to another page/site?
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thehat

RE: Header(...)

30 Jun, 2009 - 06:29 AM
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No, that's only one of it's many uses.

When people talk about http headers, they are referring to a lot of information that is sent ahead of a web page to inform the browser. Using the header() function, you can modify these headers. To see them, I recommend using Firefox and the 'Live HTTP Headers' extension. Once you see headers in action you should have a better idea of what header() can do.
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