How can one ensure proper file size retrieval when using fopen in PHP?

When using fopen in PHP to retrieve file size, it is important to handle the file pointer correctly to ensure proper file size retrieval. One way to do this is by using the fseek function to move the file pointer to the end of the file and then using the ftell function to get the current position of the file pointer, which represents the file size. 

$file = fopen('example.txt', 'r');
if ($file) {
    fseek($file, 0, SEEK_END);
    $fileSize = ftell($file);
    fclose($file);
    
    echo "File size: " . $fileSize . " bytes";
} else {
    echo "Unable to open file.";
}

Keywords

PHP fopen file size retrieval error handling

Related Questions