How can the fread error related to a bad file descriptor be resolved in PHP?

The fread error related to a bad file descriptor in PHP can be resolved by ensuring that the file is opened successfully before attempting to read from it. This error occurs when the file descriptor is not valid, which can happen if the file failed to open or was closed prematurely. To fix this issue, you should check if the file is opened successfully using fopen before calling fread. 

$filename = 'example.txt';
$file = fopen($filename, 'r');

if ($file) {
    $content = fread($file, filesize($filename));
    fclose($file);
    echo $content;
} else {
    echo "Error: Unable to open file.";
}

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fread error bad file descriptor resolve PHP

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