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Creating a Database Connection

Every developer should be aware of the following trick when creating a database connection with AJAX and PHP. When responding with XML data from the server, PHP’s header method allows you to set the Content-Type of the file, which needs to be application/xml. The following line of code simply constructs an XML file with strings and writes them to the page via PHP:

header("Content-Type: application/xml; charset=UTF-8");

Without this line of code, the response may not be seen as valid XML, which will break your request.

I hope that these tips and tricks save you some time when developing AJAX-enabled applications. They’ve helped me in numerous situations.

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