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What are common issues when writing variables to a file in PHP?

One common issue when writing variables to a file in PHP is not properly handling file permissions. Make sure the file you are trying to write to has...

What precautions should be taken to avoid errors when using the header function for page reloading in PHP?

To avoid errors when using the header function for page reloading in PHP, it is important to ensure that there is no output sent to the browser before...

What are some common reasons for the "headers already sent" error in PHP?

The "headers already sent" error in PHP occurs when the server tries to send HTTP headers, but output has already been sent to the browser. This can b...

What are the potential pitfalls of appending data to a file using fwrite in PHP?

Appending data to a file using fwrite in PHP can lead to potential pitfalls such as overwriting existing data in the file or not properly handling fil...

What does $_REQUEST represent in PHP?

$_REQUEST is a PHP superglobal variable that is used to collect data from both the GET and POST methods. It can be used to access form data, query str...