How can you optimize the process of reading specific lines from a text file in PHP?

When reading specific lines from a text file in PHP, you can optimize the process by using the `SplFileObject` class. This class allows you to seek to a specific line in the file without having to read through all the lines before it. By using the `seek()` method, you can efficiently read the desired line without unnecessary processing.

$file = new SplFileObject('file.txt');
$file->seek($lineNumber - 1); // adjust line number to 0-based index
$specificLine = $file->current();
echo $specificLine;