How to Redirect to a Different Page After Form Submission in PHP?

Redirecting to a Different Page after Form Submission in PHP

When creating web forms in PHP, there are times when we want to redirect the user to a different page after they have submitted the form. This is typically done to display a message, such as a success notification or an error message, or to redirect to a page that collects further information.

Utilizing Header Redirects

In PHP, the most common approach to redirecting after a form submission is to use header redirects. This involves setting the HTTP header Location to the URL of the destination page. For example, in the code provided, the following line should be added immediately after the @mail() function call:

<code class="php">header('Location: nextpage.php');</code>

This line sets the Location header to redirect the user to the nextpage.php file.

Caveats of Header Redirects

It's important to note that header redirects must be issued before any output is sent to the browser. This means that any HTML code, including

 blocks and comments, should be placed after the header('Location: ...'); statement.

Failure to adhere to this rule will result in an error, as headers cannot be modified once output has been started.
Alternatives to Header Redirects
While header redirects are the most straightforward way to redirect a user, there are a few alternatives to consider:


HTTP Response Codes: Sending a specific HTTP response code, such as "302 Found" or "307 Temporary Redirect," tells the browser to redirect to a different location.

Meta Refresh: Using a  tag automatically redirects the user after a specified time interval.

However, it's generally recommended to use header redirects for this purpose due to their simplicity and compatibility across browsers.
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