gistfile1.php

$buffer = '';
$conn->on('data', function($data, $conn) use (&$buffer) {
	$buffer .= $data;
	
	// check to see if the buffer contains any line feeds (detect end of line)
	while (false !== ($pos = strpos($buffer, PHP_EOL))) {
		// get the first line from the buffer (up to the EOL)
		$line = substr($buffer, 0, $pos);
		
		// remove the line from the buffer (advance behind the EOL)
		$buffer = (string)substr($buffer, $pos + strlen(EOL));
		
		// do something with $line
	}
});