How can PHP handle errors or warnings related to file size calculations?

When handling errors or warnings related to file size calculations in PHP, you can use the `filesize()` function to get the size of the file and then check if the file size exceeds a certain limit. If it does, you can throw an exception or display an error message to the user. 

$file = 'example.txt';
$maxFileSize = 1000000; // 1MB

$fileSize = filesize($file);

if ($fileSize > $maxFileSize) {
    throw new Exception('File size exceeds the limit.');
}

Keywords

PHP error handling file size calculations warnings

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