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Search results for: "$_SERVER"

What is the function of $_SERVER['QUERY_STRING'] in PHP?

$_SERVER['QUERY_STRING'] is a PHP superglobal variable that contains the query string portion of the URL. This variable can be used to access the para...

How can the $_SERVER['PHP_SELF'] variable be used as an alternative to $PHP_SELF?

Using $_SERVER['PHP_SELF'] as an alternative to $PHP_SELF can help prevent potential security vulnerabilities such as cross-site scripting attacks. By...

Which method, getenv or $_SERVER, is recommended for retrieving the referer in PHP?

When retrieving the referer in PHP, it is recommended to use the $_SERVER superglobal over the getenv function. This is because $_SERVER is a predefin...

Are there any potential pitfalls when using $_SERVER['PHP_SELF'] to retrieve directory names in PHP?

Using $_SERVER['PHP_SELF'] to retrieve directory names in PHP can expose your code to potential security vulnerabilities such as cross-site scripting...

What are some potential pitfalls when using $_SERVER['REQUEST_URI'] to determine the current webpage in PHP?

One potential pitfall when using $_SERVER['REQUEST_URI'] is that it may not always return the expected value due to server configurations or URL rewri...

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